{"id":10532,"date":"2025-05-19T03:54:36","date_gmt":"2025-05-19T01:54:36","guid":{"rendered":"https:\/\/aminogram.com\/bioimpedancemetrie\/"},"modified":"2026-09-11T19:43:13","modified_gmt":"2026-09-11T17:43:13","slug":"bioimpedancemetrie","status":"publish","type":"page","link":"https:\/\/aminogram.com\/en\/bioimpedancemetrie\/","title":{"rendered":"Bioimpedance"},"content":{"rendered":"<main id='oxy-main'><div class=\"oxy-container-10532-2049 oxy-container clinic-banner art-banner\"><img decoding=\"async\" class=\"oxy-image-10532-2045 oxy-image clinic-banner-img\" src=\"https:\/\/aminogram.com\/wp-content\/uploads\/2025\/10\/bioimpedancemetrie-header-1.webp\" alt=\"\" srcset=\"https:\/\/aminogram.com\/wp-content\/uploads\/2025\/10\/bioimpedancemetrie-header-1.webp 2560w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/10\/bioimpedancemetrie-header-1-300x110.webp 300w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/10\/bioimpedancemetrie-header-1-1024x376.webp 1024w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/10\/bioimpedancemetrie-header-1-768x282.webp 768w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/10\/bioimpedancemetrie-header-1-1536x563.webp 1536w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/10\/bioimpedancemetrie-header-1-2048x751.webp 2048w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/10\/bioimpedancemetrie-header-1-280x103.webp 280w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/10\/bioimpedancemetrie-header-1-1200x440.webp 1200w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" width=\"1920\" height=\"500\"><div class=\"oxy-container-10532-2048 oxy-container art-banner-text\"><p class=\"oxy-text-10532-2046 oxy-text art-banner-title\">\nBioimpedance\n<\/p><p class=\"oxy-text-10532-2047 oxy-text art-banner-sub\">\na non-invasive technology to understand what weight does not say.\n<\/p><\/div><\/div><section class=\"oxy-container-10532-2442 oxy-container section clinic art\"><div class=\"oxy-container-10532-2441 oxy-container wrap clinic-grid\"><div class=\"oxy-container-10532-2364 oxy-container clinic-main art-main\"><div class=\"oxy-shortcode-10532-2443 oxy-shortcode crumbs\"><nav aria-label=\"breadcrumbs\" class=\"rank-math-breadcrumb\"><p class=\"crumbs-line\"><span class=\"last\">Home<\/span><\/p><\/nav><\/div><h1 class=\"oxy-text-10532-2051 oxy-text sr-only\">\nBioimpedance\n<\/h1><h1 class=\"oxy-text-10532-2052 oxy-text art-title art-bar\">\nHow do BIA and BIS evaluate body composition?\n<\/h1><div class=\"oxy-container-10532-2054 oxy-container rich art-text\"><p class=\"oxy-text-10532-2053 oxy-text art-callout\">\nBioimpedance analysis is a non-invasive method that measures body composition \u2014 fat mass, muscle mass and water \u2014 by sending a low-intensity electrical current through the body. It yields parameters such as phase angle (PhA) and impedance ratio (IR), useful for clinical and sports follow-up.\n<\/p><\/div><div class=\"oxy-container-10532-2060 oxy-container rich art-text\"><p class=\"oxy-text-10532-2055 oxy-text\">\n<strong>Body composition<\/strong> corresponds to the distribution between <strong>fat mass<\/strong>, <strong>skeletal muscle mass<\/strong>, and <strong>water<\/strong> in the body, providing a much more relevant evaluation than weight alone or BMI.\n<\/p><p class=\"oxy-text-10532-2056 oxy-text\">\n<strong>Bioimpedance<\/strong> (Bioelectrical Impedance Analysis, <strong>BIA<\/strong>) is a <strong>non-invasive<\/strong> and <strong>painless<\/strong> method for analyzing these compartments. It relies on how body tissues react to an <strong>alternating electrical signal of very low intensity<\/strong>, imperceptible to the individual.\n<\/p><p class=\"oxy-text-10532-2057 oxy-text\">\nThis response depends notably on tissue <strong>hydration<\/strong> and on the <strong>properties of cell membranes<\/strong>. By integrating these parameters into <strong>validated prediction models<\/strong>, BIA allows for the estimation of <strong>fat-free mass<\/strong> and its associated compartments, notably <strong>skeletal muscle mass<\/strong> and <strong>total water<\/strong>.\n<\/p><p class=\"oxy-text-10532-2058 oxy-text\">\n<strong>Bioelectrical Impedance Spectroscopy (BIS)<\/strong> goes even further: it measures the body\u2019s electrical response over a <strong>wide spectrum of frequencies<\/strong>, allowing for a f<strong>iner characterization<\/strong> of <strong>fluid compartments<\/strong> and <strong>cellular properties<\/strong> (such as <strong>membrane capacitance<\/strong> and <strong>characteristic frequency<\/strong>). This spectroscopic approach improves the <strong>physiological robustness<\/strong> of the model and provides <strong>direct quality control<\/strong> thanks to the analysis of signal coherence across the entire spectrum.\n<\/p><p class=\"oxy-text-10532-2059 oxy-text\">\nThanks to their <strong>simplicity of use<\/strong> and the <strong>speed of obtaining results<\/strong>, <strong>BIA<\/strong> and <strong>BIS<\/strong> provide essential information on <strong>nutritional and hydration status<\/strong>, constituting reliable tools for <strong>clinical follow-up<\/strong>.\n<\/p><\/div><div class=\"oxy-container-10532-2066 oxy-container art-stack\"><div class=\"oxy-container-10532-2062 oxy-container art-video\"><video class=\"oxy-container-10532-2061 oxy-container art-video-el\" src=\"\/wp-content\/uploads\/2020\/08\/BIA.mp4\" poster=\"\/wp-content\/uploads\/2020\/09\/BIA.jpg\" controls=\"\" preload=\"none\" playsinline=\"\"><\/video><\/div><div class=\"oxy-container-10532-2065 oxy-container art-btn-row\"><a class=\"oxy-container-link-10532-2064 oxy-container-link btn btn-primary\" href=\"\/en\/scientific-review-page-form\/\" target=\"_self\"><span class=\"oxy-text-10532-2063 oxy-text\">\nRequest our scientific review\n<\/span><\/a><\/div><\/div><div class=\"oxy-container-10532-2068 oxy-container rich art-text\" id=\"inter-bia\"><p class=\"oxy-text-10532-2067 oxy-text\">\nBIA is strongly correlated with total body water, which allows for the precise estimation of fat-free mass using predictive equations. However, since adipose tissue is very poorly linked to the measured parameters, its direct estimation is less reliable. Thus, there is a scientific consensus to calculate fat mass by difference, by subtracting fat-free mass from total weight, in accordance with the body compartment model.\n<\/p><\/div><h2 class=\"oxy-text-10532-2069 oxy-text art-h2 art-bar\">\nParameters derived from the bioelectrical signal\n<\/h2><div class=\"oxy-container-10532-2080 oxy-container rich art-text\"><p class=\"oxy-text-10532-2070 oxy-text\">\nBeyond the estimates derived from body composition models, certain parameters are calculated directly from the measured electrical signal. These so-called \u201craw\u201d indicators do not rely on predictive equations but reflect the intrinsic electrical properties of biological tissues.\n<\/p><h3 class=\"oxy-container-10532-2072 oxy-container art-h3 art-hlink\" id=\"phase-angle-pha\"><a class=\"oxy-text-link-10532-2071 oxy-text-link\" href=\"\/en\/pha-angle-de-phase-et-ir-ratio-dimpedance\/\" target=\"_self\">\nPhase Angle (PhA)\n<\/a><\/h3><p class=\"oxy-text-10532-2073 oxy-text\">\nThe phase angle is derived from the relationship between resistance (R) and reactance (Xc). It reflects the capacitive behavior of cell membranes and serves as a global indicator of membrane integrity and active cell mass.\n<\/p><p class=\"oxy-text-10532-2074 oxy-text\">\nPhysiologically, the PhA reflects the capacity of cells to maintain their structure, intracellular hydration, and functionality. A decrease in the phase angle can be associated with tissue alteration, fluid imbalance, or a catabolic state. Monitoring it over time provides valuable qualitative information on the evolution of cellular health.\n<\/p><h3 class=\"oxy-container-10532-2076 oxy-container art-h3 art-hlink\" id=\"impedance-ratio-ir\"><a class=\"oxy-text-link-10532-2075 oxy-text-link\" href=\"\/en\/pha-angle-de-phase-et-ir-ratio-dimpedance\/#ri-secc\" target=\"_self\">\nImpedance Ratio (IR)\n<\/a><\/h3><p class=\"oxy-text-10532-2077 oxy-text\">\nThe impedance ratio (IR) is generally expressed as the ratio between the impedance measured at high frequency and that measured at low frequency. It provides complementary information on the distribution of body fluids.\n<\/p><p class=\"oxy-text-10532-2078 oxy-text\">\nThe IR makes it possible to assess the balance between intra- and extracellular compartments as well as the structural coherence of tissues. An elevation in the IR may reflect a change in membrane permeability or an alteration in fluid distribution.\n<\/p><p class=\"oxy-text-10532-2079 oxy-text\">\nThe joint interpretation of the PhA and IR reinforces the physiological robustness of the analysis. These parameters enrich the clinical assessment by providing a qualitative reading of the biological tissue, beyond the simple quantitative estimation of fat or muscle mass.\n<\/p><\/div><div class=\"oxy-container-10532-2083 oxy-container art-btn-row\"><a class=\"oxy-container-link-10532-2082 oxy-container-link btn btn-primary\" href=\"\/en\/pha-angle-de-phase-et-ir-ratio-dimpedance\/\" target=\"_self\"><span class=\"oxy-text-10532-2081 oxy-text\">\nView Page\n<\/span><\/a><\/div><h2 class=\"oxy-text-10532-2084 oxy-text art-h2 art-bar\">\nFactors influencing the accuracy of BIA measurements\n<\/h2><div class=\"oxy-container-10532-2086 oxy-container rich art-text\"><p class=\"oxy-text-10532-2085 oxy-text\">\nThe accuracy of a BIA measurement depends on several technical and physiological parameters. Among the most determining are the quality of contact between the electrodes and the skin, the body position during the measurement, and the connection mode used by the device.\n<\/p><\/div><div class=\"oxy-container-10532-2103 oxy-container art-cols art-cols--4\"><a class=\"oxy-container-link-10532-2090 oxy-container-link art-tile\" href=\"#pdc10\" target=\"_self\"><p class=\"oxy-text-10532-2087 oxy-text art-tile-title\">\nContact points\n<\/p><div class=\"oxy-container-10532-2089 oxy-container rich art-text art-tile-text\"><p class=\"oxy-text-10532-2088 oxy-text\">\nHand-foot analysis for a consistent whole body measurement.\n<\/p><\/div><\/a><a class=\"oxy-container-link-10532-2094 oxy-container-link art-tile\" href=\"#spct10\" target=\"_self\"><p class=\"oxy-text-10532-2091 oxy-text art-tile-title\">\nSpectroscopy\n<\/p><div class=\"oxy-container-10532-2093 oxy-container rich art-text art-tile-text\"><p class=\"oxy-text-10532-2092 oxy-text\">\n54 measurement points, instant quality control.\n<\/p><\/div><\/a><a class=\"oxy-container-link-10532-2098 oxy-container-link art-tile\" href=\"#mlag10\" target=\"_self\"><p class=\"oxy-text-10532-2095 oxy-text art-tile-title\">\nMulti-algorithms\n<\/p><div class=\"oxy-container-10532-2097 oxy-container rich art-text art-tile-text\"><p class=\"oxy-text-10532-2096 oxy-text\">\nNo simplified deduction: each compartment is calculated independently.\n<\/p><\/div><\/a><a class=\"oxy-container-link-10532-2102 oxy-container-link art-tile\" href=\"#recl10\" target=\"_self\"><p class=\"oxy-text-10532-2099 oxy-text art-tile-title\">\nClinical reference\n<\/p><div class=\"oxy-container-10532-2101 oxy-container rich art-text art-tile-text\"><p class=\"oxy-text-10532-2100 oxy-text\">\nTetrapolar method and algorithms validated by literature.\n<\/p><\/div><\/a><\/div><h3 class=\"oxy-text-10532-2104 oxy-text art-h3\" id=\"pdc10\">\nImportance of contact points\n<\/h3><div class=\"oxy-container-10532-2106 oxy-container rich art-text\"><p class=\"oxy-text-10532-2105 oxy-text\">\nThe contact points determine the signal path in the body and therefore the compartments actually traversed. Depending on the combination used (hand-hand, hand-foot, foot-foot), the measurement provides information on a different body volume.\n<\/p><\/div><div class=\"oxy-container-10532-2155 oxy-container art-cols art-cols--3\"><div class=\"oxy-container-10532-2122 oxy-container art-card\"><div class=\"oxy-container-10532-2118 oxy-container art-stack\"><h4 class=\"oxy-text-10532-2107 oxy-text art-card-head\" id=\"foot-foot\">\nFoot - Foot\n<\/h4><figure class=\"oxy-container-10532-2109 oxy-container art-fig\"><img decoding=\"async\" class=\"oxy-image-10532-2108 oxy-image art-card-img\" src=\"https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/modele-pied-pied.png\" alt=\"Diagram showing foot-to-foot bioimpedance measurement limited to the lower body.\" loading=\"lazy\" srcset=\"https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/modele-pied-pied.png 611w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/modele-pied-pied-176x300.png 176w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/modele-pied-pied-599x1024.png 599w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/modele-pied-pied-109x187.png 109w\" sizes=\"(max-width: 611px) 100vw, 611px\"><\/figure><div class=\"oxy-container-10532-2117 oxy-container rich art-text\"><ul class=\"oxy-container-10532-2116 oxy-container\"><li class=\"oxy-container-10532-2111 oxy-container\"><div class=\"oxy-text-10532-2110 oxy-text\">\nMeasurement limited to the lower body\n<\/div><\/li><li class=\"oxy-container-10532-2113 oxy-container\"><div class=\"oxy-text-10532-2112 oxy-text\">\nTrunk and upper body estimated, not measured\n<\/div><\/li><li class=\"oxy-container-10532-2115 oxy-container\"><div class=\"oxy-text-10532-2114 oxy-text\">\nVariable accuracy depending on sex and morphotype\n<\/div><\/li><\/ul><\/div><\/div><div class=\"oxy-container-10532-2121 oxy-container art-btn-row\"><a class=\"oxy-container-link-10532-2120 oxy-container-link btn btn-primary art-vid-btn\" href=\"\/wp-content\/uploads\/2021\/10\/foot-foot-en.mp4\" target=\"_self\" data-amg-lightbox=\"\" data-amg-close=\"Close\"><span class=\"oxy-text-10532-2119 oxy-text\">\nWATCH THE VIDEO\n<\/span><\/a><\/div><\/div><div class=\"oxy-container-10532-2138 oxy-container art-card\"><div class=\"oxy-container-10532-2134 oxy-container art-stack\"><h4 class=\"oxy-text-10532-2123 oxy-text art-card-head\" id=\"hand-foot\">\nHand - Foot\n<\/h4><figure class=\"oxy-container-10532-2125 oxy-container art-fig\"><img decoding=\"async\" class=\"oxy-image-10532-2124 oxy-image art-card-img\" src=\"https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/modele-main-pied.png\" alt=\"Diagram showing hand-to-foot bioimpedance measurement for a complete whole-body analysis.\" loading=\"lazy\" srcset=\"https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/modele-main-pied.png 611w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/modele-main-pied-176x300.png 176w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/modele-main-pied-599x1024.png 599w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/modele-main-pied-109x187.png 109w\" sizes=\"(max-width: 611px) 100vw, 611px\"><\/figure><div class=\"oxy-container-10532-2133 oxy-container rich art-text\"><ul class=\"oxy-container-10532-2132 oxy-container\"><li class=\"oxy-container-10532-2127 oxy-container\"><div class=\"oxy-text-10532-2126 oxy-text\">\nMeasures the whole body: limbs + trunk\n<\/div><\/li><li class=\"oxy-container-10532-2129 oxy-container\"><div class=\"oxy-text-10532-2128 oxy-text\">\nComplete and more reliable analysis\n<\/div><\/li><li class=\"oxy-container-10532-2131 oxy-container\"><div class=\"oxy-text-10532-2130 oxy-text\">\nPreferred method in clinical practice\n<\/div><\/li><\/ul><\/div><\/div><div class=\"oxy-container-10532-2137 oxy-container art-btn-row\"><a class=\"oxy-container-link-10532-2136 oxy-container-link btn btn-primary art-vid-btn\" href=\"\/wp-content\/uploads\/2021\/10\/hand-feet-en.mp4\" target=\"_self\" data-amg-lightbox=\"\" data-amg-close=\"Close\"><span class=\"oxy-text-10532-2135 oxy-text\">\nWATCH THE VIDEO\n<\/span><\/a><\/div><\/div><div class=\"oxy-container-10532-2154 oxy-container art-card\"><div class=\"oxy-container-10532-2150 oxy-container art-stack\"><h4 class=\"oxy-text-10532-2139 oxy-text art-card-head\" id=\"hand-hand\">\nHand - Hand\n<\/h4><figure class=\"oxy-container-10532-2141 oxy-container art-fig\"><img decoding=\"async\" class=\"oxy-image-10532-2140 oxy-image art-card-img\" src=\"https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/modele-main-main.png\" alt=\"Diagram showing hand-to-hand bioimpedance measurement limited to the upper body.\" loading=\"lazy\" srcset=\"https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/modele-main-main.png 611w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/modele-main-main-176x300.png 176w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/modele-main-main-599x1024.png 599w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/modele-main-main-109x187.png 109w\" sizes=\"(max-width: 611px) 100vw, 611px\"><\/figure><div class=\"oxy-container-10532-2149 oxy-container rich art-text\"><ul class=\"oxy-container-10532-2148 oxy-container\"><li class=\"oxy-container-10532-2143 oxy-container\"><div class=\"oxy-text-10532-2142 oxy-text\">\nMeasurement limited to the upper body\n<\/div><\/li><li class=\"oxy-container-10532-2145 oxy-container\"><div class=\"oxy-text-10532-2144 oxy-text\">\nThe lower body is estimated, not measured\n<\/div><\/li><li class=\"oxy-container-10532-2147 oxy-container\"><div class=\"oxy-text-10532-2146 oxy-text\">\nAccuracy dependent on morphotype and sex\n<\/div><\/li><\/ul><\/div><\/div><div class=\"oxy-container-10532-2153 oxy-container art-btn-row\"><a class=\"oxy-container-link-10532-2152 oxy-container-link btn btn-primary art-vid-btn\" href=\"\/wp-content\/uploads\/2021\/10\/hand-hand-en.mp4\" target=\"_self\" data-amg-lightbox=\"\" data-amg-close=\"Close\"><span class=\"oxy-text-10532-2151 oxy-text\">\nWATCH THE VIDEO\n<\/span><\/a><\/div><\/div><\/div><div class=\"oxy-container-10532-2158 oxy-container art-note\"><img decoding=\"async\" class=\"oxy-image-10532-2156 oxy-image art-note-img\" src=\"https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/Measurement-hand-foot-icon.png\" alt=\"Measurement-hand-foot-icon\" loading=\"lazy\" srcset=\"https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/Measurement-hand-foot-icon.png 201w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/Measurement-hand-foot-icon-150x150.png 150w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/Measurement-hand-foot-icon-187x187.png 187w\" sizes=\"(max-width: 201px) 100vw, 201px\"><p class=\"oxy-text-10532-2157 oxy-text art-note-text\">\nAminogram devices rely on the hand-foot measurement, the reference method for complete and reliable body analysis, recommended by ESPEN and the Haute Autorit\u00e9 de Sant\u00e9.\n<\/p><\/div><div class=\"oxy-container-10532-2162 oxy-container art-stack\"><div class=\"oxy-container-10532-2161 oxy-container art-btn-row\"><a class=\"oxy-container-link-10532-2160 oxy-container-link btn btn-primary\" href=\"\/en\/biody-xpert-zm3\/\" target=\"_self\"><span class=\"oxy-text-10532-2159 oxy-text\">\nDiscover more about Biody Xpert<sup>ZM<\/sup>3\n<\/span><\/a><\/div><\/div><div class=\"oxy-container-10532-2201 oxy-container art-stack\"><h3 class=\"oxy-text-10532-2163 oxy-text art-h3\" id=\"measurement-positions\">\nMeasurement positions\n<\/h3><div class=\"oxy-container-10532-2197 oxy-container art-cols art-cols--3\"><div class=\"oxy-container-10532-2174 oxy-container art-card\"><h4 class=\"oxy-text-10532-2164 oxy-text art-card-head\" id=\"the-lying-position\">\nThe lying position\n<\/h4><div class=\"oxy-container-10532-2171 oxy-container rich art-text\"><p class=\"oxy-text-10532-2165 oxy-text\">\nHomogeneous distribution of fluids after 15\u201320 min\n<\/p><ul class=\"oxy-container-10532-2170 oxy-container pm-list\"><li class=\"oxy-container-10532-2167 oxy-container\"><div class=\"oxy-text-10532-2166 oxy-text\">\n<b class=\"pm\">+<\/b> Excellent precision\n<\/div><\/li><li class=\"oxy-container-10532-2169 oxy-container\"><div class=\"oxy-text-10532-2168 oxy-text\">\n<b class=\"pm\">\u2212<\/b> Longer stabilization time\n<\/div><\/li><\/ul><\/div><figure class=\"oxy-container-10532-2173 oxy-container art-fig\"><img decoding=\"async\" class=\"oxy-image-10532-2172 oxy-image art-card-img\" src=\"https:\/\/aminogram.com\/wp-content\/uploads\/2026\/04\/La-position-allongee.webp\" alt=\"Sch\u00e9ma d&#039;une personne allong\u00e9e : position de mesure recommand\u00e9e pour la BIA\" loading=\"lazy\" srcset=\"https:\/\/aminogram.com\/wp-content\/uploads\/2026\/04\/La-position-allongee.webp 358w, https:\/\/aminogram.com\/wp-content\/uploads\/2026\/04\/La-position-allongee-300x221.webp 300w\" sizes=\"(max-width: 358px) 100vw, 358px\"><\/figure><\/div><div class=\"oxy-container-10532-2185 oxy-container art-card\"><h4 class=\"oxy-text-10532-2175 oxy-text art-card-head\" id=\"the-sitting-position\">\nThe sitting position\n<\/h4><div class=\"oxy-container-10532-2182 oxy-container rich art-text\"><p class=\"oxy-text-10532-2176 oxy-text\">\nStable, fast, and reproducible position\n<\/p><ul class=\"oxy-container-10532-2181 oxy-container pm-list\"><li class=\"oxy-container-10532-2178 oxy-container\"><div class=\"oxy-text-10532-2177 oxy-text\">\n<b class=\"pm\">+<\/b> Practical in consultation\n<\/div><\/li><li class=\"oxy-container-10532-2180 oxy-container\"><div class=\"oxy-text-10532-2179 oxy-text\">\n<b class=\"pm\">+<\/b> Comfortable for the patient\n<\/div><\/li><\/ul><\/div><figure class=\"oxy-container-10532-2184 oxy-container art-fig\"><img decoding=\"async\" class=\"oxy-image-10532-2183 oxy-image art-card-img\" src=\"https:\/\/aminogram.com\/wp-content\/uploads\/2020\/08\/position-assise.png\" alt=\"Diagram illustrating the sitting position for bioimpedance measurement.\" loading=\"lazy\" srcset=\"https:\/\/aminogram.com\/wp-content\/uploads\/2020\/08\/position-assise.png 357w, https:\/\/aminogram.com\/wp-content\/uploads\/2020\/08\/position-assise-300x221.png 300w, https:\/\/aminogram.com\/wp-content\/uploads\/2020\/08\/position-assise-254x187.png 254w\" sizes=\"(max-width: 357px) 100vw, 357px\"><\/figure><\/div><div class=\"oxy-container-10532-2196 oxy-container art-card\"><h4 class=\"oxy-text-10532-2186 oxy-text art-card-head\" id=\"the-standing-position\">\nThe standing position\n<\/h4><div class=\"oxy-container-10532-2193 oxy-container rich art-text\"><p class=\"oxy-text-10532-2187 oxy-text\">\nDistribution of fluids towards the lower body\n<\/p><ul class=\"oxy-container-10532-2192 oxy-container pm-list\"><li class=\"oxy-container-10532-2189 oxy-container\"><div class=\"oxy-text-10532-2188 oxy-text\">\n<b class=\"pm\">+<\/b> Quick to implement\n<\/div><\/li><li class=\"oxy-container-10532-2191 oxy-container\"><div class=\"oxy-text-10532-2190 oxy-text\">\n<b class=\"pm\">\u2212<\/b> Poorer water homogeneity\n<\/div><\/li><\/ul><\/div><figure class=\"oxy-container-10532-2195 oxy-container art-fig\"><img decoding=\"async\" class=\"oxy-image-10532-2194 oxy-image art-card-img\" src=\"https:\/\/aminogram.com\/wp-content\/uploads\/2020\/08\/position-debout-2.png\" alt=\"Diagram illustrating the standing position for bioimpedance measurement.\" loading=\"lazy\" srcset=\"https:\/\/aminogram.com\/wp-content\/uploads\/2020\/08\/position-debout-2.png 357w, https:\/\/aminogram.com\/wp-content\/uploads\/2020\/08\/position-debout-2-300x221.png 300w, https:\/\/aminogram.com\/wp-content\/uploads\/2020\/08\/position-debout-2-254x187.png 254w\" sizes=\"(max-width: 357px) 100vw, 357px\"><\/figure><\/div><\/div><div class=\"oxy-container-10532-2200 oxy-container rich art-text\"><p class=\"oxy-text-10532-2198 oxy-text\">\n<b>Aminogram devices allow for measurement in the sitting or lying position, with or without cable, in order to combine simplicity of use and clinical precision.<\/b>\n<\/p><p class=\"oxy-text-10532-2199 oxy-text\">\nThe sitting position, easy to implement, is perfectly adapted to routine consultations. The lying position, on the other hand, offers an ideal environment for the most fragile populations and for evaluations requiring optimal fluid stabilization.\n<\/p><\/div><\/div><div class=\"oxy-container-10532-2213 oxy-container art-stack\"><h3 class=\"oxy-text-10532-2202 oxy-text art-h3\" id=\"mono-multi-freq-bia\">\nSingle-frequency, multi-frequency and spectroscopy\n<\/h3><div class=\"oxy-container-10532-2210 oxy-container rich art-text\"><p class=\"oxy-text-10532-2203 oxy-text\">\nBIA measures the electrical response of tissues, influenced by hydration and cell membranes. This response varies according to the frequency of the current:\n<\/p><ul class=\"oxy-container-10532-2208 oxy-container\"><li class=\"oxy-container-10532-2205 oxy-container\"><div class=\"oxy-text-10532-2204 oxy-text\">\n<b>Low frequencies (&lt; 7 kHz)<\/b> : the current remains in the extracellular medium.\n<\/div><\/li><li class=\"oxy-container-10532-2207 oxy-container\"><div class=\"oxy-text-10532-2206 oxy-text\">\n<b>High frequencies (&gt; 50 kHz)<\/b> : it crosses the membranes and accesses intracellular water.\n<\/div><\/li><\/ul><p class=\"oxy-text-10532-2209 oxy-text\">\nIt is this variation that allows distinguishing fluid compartments and improving analysis precision.\n<\/p><\/div><div class=\"oxy-container-10532-2212 oxy-container art-video\"><video class=\"oxy-container-10532-2211 oxy-container art-video-el\" src=\"\/wp-content\/uploads\/2020\/08\/BIA-VIDEO-1.mp4\" poster=\"\/wp-content\/uploads\/2020\/09\/BIA-VIDEO-PORTADA.jpg\" controls=\"\" preload=\"none\" playsinline=\"\"><\/video><\/div><\/div><div class=\"oxy-container-10532-2256 oxy-container art-cols art-cols--3\"><div class=\"oxy-container-10532-2227 oxy-container art-card\"><h4 class=\"oxy-text-10532-2214 oxy-text art-card-head\" id=\"single-frequency\">\nSingle-frequency\n<\/h4><figure class=\"oxy-container-10532-2216 oxy-container art-fig\"><img decoding=\"async\" class=\"oxy-image-10532-2215 oxy-image art-card-img\" src=\"https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/Mono.png\" alt=\"Icon representing a single-frequency electrical wave in bioimpedance.\" loading=\"lazy\" srcset=\"https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/Mono.png 201w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/Mono-150x150.png 150w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/Mono-187x187.png 187w\" sizes=\"(max-width: 201px) 100vw, 201px\"><\/figure><div class=\"oxy-container-10532-2226 oxy-container rich art-text\"><ul class=\"oxy-container-10532-2225 oxy-container\"><li class=\"oxy-container-10532-2218 oxy-container\"><div class=\"oxy-text-10532-2217 oxy-text\">\nSingle frequency (50 kHz)\n<\/div><\/li><li class=\"oxy-container-10532-2220 oxy-container\"><div class=\"oxy-text-10532-2219 oxy-text\">\nMeasures total impedance and phase angle\n<\/div><\/li><li class=\"oxy-container-10532-2222 oxy-container\"><div class=\"oxy-text-10532-2221 oxy-text\">\nDoes not fully cross the cell membrane\n<\/div><\/li><li class=\"oxy-container-10532-2224 oxy-container\"><div class=\"oxy-text-10532-2223 oxy-text\">\nEstimated fluid compartments \u2192 limited precision\n<\/div><\/li><\/ul><\/div><\/div><div class=\"oxy-container-10532-2241 oxy-container art-card\"><h4 class=\"oxy-text-10532-2228 oxy-text art-card-head\" id=\"multi-frequency\">\nMulti-frequency\n<\/h4><figure class=\"oxy-container-10532-2230 oxy-container art-fig\"><img decoding=\"async\" class=\"oxy-image-10532-2229 oxy-image art-card-img\" src=\"https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/Multi.png\" alt=\"Icon representing multiple electrical frequency waves in bioimpedance.\" loading=\"lazy\" srcset=\"https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/Multi.png 201w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/Multi-150x150.png 150w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/Multi-187x187.png 187w\" sizes=\"(max-width: 201px) 100vw, 201px\"><\/figure><div class=\"oxy-container-10532-2240 oxy-container rich art-text\"><ul class=\"oxy-container-10532-2239 oxy-container\"><li class=\"oxy-container-10532-2232 oxy-container\"><div class=\"oxy-text-10532-2231 oxy-text\">\nMultiple frequencies (1\u20131000 kHz)\n<\/div><\/li><li class=\"oxy-container-10532-2234 oxy-container\"><div class=\"oxy-text-10532-2233 oxy-text\">\nDifferentiates intra- \/ extracellular water\n<\/div><\/li><li class=\"oxy-container-10532-2236 oxy-container\"><div class=\"oxy-text-10532-2235 oxy-text\">\nReal data on fluid compartments\n<\/div><\/li><li class=\"oxy-container-10532-2238 oxy-container\"><div class=\"oxy-text-10532-2237 oxy-text\">\nMore complete models (up to 6 compartments)\n<\/div><\/li><\/ul><\/div><\/div><div class=\"oxy-container-10532-2255 oxy-container art-card\"><h4 class=\"oxy-text-10532-2242 oxy-text art-card-head\" id=\"spectroscopy\">\nSpectroscopy\n<\/h4><figure class=\"oxy-container-10532-2244 oxy-container art-fig\"><img decoding=\"async\" class=\"oxy-image-10532-2243 oxy-image art-card-img\" src=\"https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/Spectroscopy-3.png\" alt=\"Icon representing a continuous frequency spectrum for bioimpedance spectroscopy.\" loading=\"lazy\" srcset=\"https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/Spectroscopy-3.png 202w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/Spectroscopy-3-150x150.png 150w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/Spectroscopy-3-187x187.png 187w\" sizes=\"(max-width: 202px) 100vw, 202px\"><\/figure><div class=\"oxy-container-10532-2254 oxy-container rich art-text\"><ul class=\"oxy-container-10532-2253 oxy-container\"><li class=\"oxy-container-10532-2246 oxy-container\"><div class=\"oxy-text-10532-2245 oxy-text\">\nContinuous spectrum scanning (1\u20131000 kHz, 54 points)\n<\/div><\/li><li class=\"oxy-container-10532-2248 oxy-container\"><div class=\"oxy-text-10532-2247 oxy-text\">\nFine analysis of tissue electrical response\n<\/div><\/li><li class=\"oxy-container-10532-2250 oxy-container\"><div class=\"oxy-text-10532-2249 oxy-text\">\nAccess to physiological parameters (capacitance, characteristic frequency)\n<\/div><\/li><li class=\"oxy-container-10532-2252 oxy-container\"><div class=\"oxy-text-10532-2251 oxy-text\">\nInstant quality control (Cole-Cole curve)\n<\/div><\/li><\/ul><\/div><\/div><\/div><div class=\"oxy-container-10532-2259 oxy-container art-box\" id=\"spct10\"><div class=\"oxy-container-10532-2258 oxy-container rich art-text\"><p class=\"oxy-text-10532-2257 oxy-text\">\nAminogram devices use multi-frequency or spectroscopic technologies, allowing for a precise and complete analysis of the <a href=\"\/en\/les-compartiments-corporels\/\"><b>body compartments<\/b>.<\/a>\n<\/p><\/div><\/div><div class=\"oxy-container-10532-2264 oxy-container art-stack\"><div class=\"oxy-container-10532-2261 oxy-container rich art-text\"><p class=\"oxy-text-10532-2260 oxy-text\">\nSpectroscopy, based on the Cole-Cole model, offers a finer reading of cellular properties and real-time quality control, ensuring the reliability and consistency of each measurement.\n<\/p><\/div><figure class=\"oxy-container-10532-2263 oxy-container art-fig\"><img decoding=\"async\" class=\"oxy-image-10532-2262 oxy-image art-img\" src=\"https:\/\/aminogram.com\/wp-content\/uploads\/2024\/10\/cole-cole-curve.png\" alt=\"Cole-Cole model graph illustrating the relationship between resistance and reactance in bioimpedance spectroscopy.\" loading=\"lazy\" srcset=\"https:\/\/aminogram.com\/wp-content\/uploads\/2024\/10\/cole-cole-curve.png 671w, https:\/\/aminogram.com\/wp-content\/uploads\/2024\/10\/cole-cole-curve-300x159.png 300w, https:\/\/aminogram.com\/wp-content\/uploads\/2024\/10\/cole-cole-curve-280x149.png 280w\" sizes=\"(max-width: 671px) 100vw, 671px\"><\/figure><\/div><div class=\"oxy-container-10532-2294 oxy-container art-stack\" id=\"mlag10\"><h3 class=\"oxy-text-10532-2265 oxy-text art-h3\" id=\"mono-multi-alg-bia\">\nSingle-algorithm vs Multi-algorithms\n<\/h3><div class=\"oxy-container-10532-2267 oxy-container rich art-text\"><p class=\"oxy-text-10532-2266 oxy-text\">\nThe electrical parameters measured in BIA (impedance, resistance, reactance, phase angle) must be interpreted using algorithms. Two approaches coexist:\n<\/p><\/div><div class=\"oxy-container-10532-2288 oxy-container art-cols art-cols--2\"><div class=\"oxy-container-10532-2280 oxy-container art-card\"><h4 class=\"oxy-text-10532-2268 oxy-text art-card-head\" id=\"single-algorithm-deductive\">\nSingle-algorithm<br>(deductive)\n<\/h4><div class=\"oxy-container-10532-2279 oxy-container rich art-text\"><p class=\"oxy-text-10532-2269 oxy-text\">\nRelies on a unique model assuming constant body hydration (e.g. 73.3% of fat-free mass), identical for all.\n<\/p><p class=\"oxy-text-10532-2270 oxy-text\">\nThe compartments are deduced from fixed coefficients.\n<\/p><p class=\"oxy-container-10532-2272 oxy-container\"><strong class=\"oxy-text-10532-2271 oxy-text\">\nExample:\n<\/strong><\/p><ul class=\"oxy-container-10532-2277 oxy-container\"><li class=\"oxy-container-10532-2274 oxy-container\"><div class=\"oxy-text-10532-2273 oxy-text\">\nFat-free mass = Total water \u00d7 0.733\n<\/div><\/li><li class=\"oxy-container-10532-2276 oxy-container\"><div class=\"oxy-text-10532-2275 oxy-text\">\nProteins = Fat-free mass \u00d7 0.198\n<\/div><\/li><\/ul><p class=\"oxy-text-10532-2278 oxy-text\">\nFast method but sensitive to physiological variations (hydration, pathologies, morphotypes).\n<\/p><\/div><\/div><div class=\"oxy-container-10532-2287 oxy-container art-card\"><h4 class=\"oxy-text-10532-2281 oxy-text art-card-head\" id=\"multi-algorithms-non-deductive\">\nMulti-algorithms<br>(non-deductive)\n<\/h4><div class=\"oxy-container-10532-2286 oxy-container rich art-text\"><p class=\"oxy-text-10532-2282 oxy-text\">\nUses several independent models, each dedicated to a body compartment (total water, fat-free mass, fat mass, body cell mass, etc.).\n<\/p><p class=\"oxy-text-10532-2283 oxy-text\">\nEach compartment is calculated according to a specific algorithm derived from the measured bioelectrical properties.\n<\/p><p class=\"oxy-text-10532-2284 oxy-text\">\nAllows for determining the real hydration level of the fat-free mass, without arbitrary assumptions.\n<\/p><p class=\"oxy-text-10532-2285 oxy-text\">\nMore consistent and precise analysis, adapted to individualized clinical monitoring.\n<\/p><\/div><\/div><\/div><div class=\"oxy-container-10532-2291 oxy-container art-note\"><img decoding=\"async\" class=\"oxy-image-10532-2289 oxy-image art-note-img\" src=\"https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/Multi-algori-icon.png\" alt=\"Multi algori icon\" loading=\"lazy\" srcset=\"https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/Multi-algori-icon.png 201w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/Multi-algori-icon-150x150.png 150w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/09\/Multi-algori-icon-187x187.png 187w\" sizes=\"(max-width: 201px) 100vw, 201px\"><p class=\"oxy-text-10532-2290 oxy-text art-note-text\">\nAll Aminogram devices rely on a Multi-algorithm approach, ensuring physiologically consistent estimates, better clinical precision, and compatibility with prediction equations validated in scientific literature.\n<\/p><\/div><div class=\"oxy-container-10532-2293 oxy-container rich art-text\"><p class=\"oxy-text-10532-2292 oxy-text\">\nThis approach ensures a <b>detailed and physiologically consistent analysis<\/b> of each body compartment, a <b>reliable evaluation<\/b> of hydration and tissue composition, as well as <b>sustainable clinical reproducibility<\/b> over time. It also allows for the use of prediction equations <b>developed, validated, and recommended <\/b>in scientific literature.\n<\/p><\/div><\/div><div class=\"oxy-container-10532-2303 oxy-container art-stack\" id=\"recl10\"><h3 class=\"oxy-text-10532-2295 oxy-text art-h3\" id=\"tetrapolar-measurement-the-reference-validated-by-espen\">\nTetrapolar measurement: the reference validated by ESPEN\n<\/h3><div class=\"oxy-container-10532-2299 oxy-container rich art-text\"><p class=\"oxy-text-10532-2296 oxy-text\">\nTetrapolar measurement uses four distinct electrodes: two to inject current and two to measure voltage. This separation of circuits ensures a precise, stable, and reproducible measurement, without influence from skin contact.\n<\/p><p class=\"oxy-text-10532-2297 oxy-text\">\nUnlike octopolar systems, which artificially segment the body and multiply sources of error, tetrapolar measurement provides a global reading, consistent with human physiology.\n<\/p><p class=\"oxy-text-10532-2298 oxy-text\">\nRecommended by ESPEN and the Haute Autorit\u00e9 de Sant\u00e9, it constitutes the international reference method \u2014 and the basis of all Aminogram devices.\n<\/p><\/div><div class=\"oxy-container-10532-2302 oxy-container art-btn-row\"><a class=\"oxy-container-link-10532-2301 oxy-container-link btn btn-primary\" href=\"#contact\" target=\"_self\"><span class=\"oxy-text-10532-2300 oxy-text\">\nRequest our scientific review\n<\/span><\/a><\/div><\/div><div class=\"oxy-container-10532-2308 oxy-container art-stack\"><h3 class=\"oxy-text-10532-2304 oxy-text art-h3\" id=\"performance-complying-with-scientific-requirements-gold-stan\">\nPerformance complying with scientific requirements (Gold Standard)\n<\/h3><div class=\"oxy-container-10532-2307 oxy-container rich art-text\"><p class=\"oxy-text-10532-2305 oxy-text\">\nOur design approach relies on published data in order to guarantee accuracy consistent with reference methods. The algorithms integrated into our devices are derived from models validated in scientific literature, ensuring a reliable estimation of the various body compartments.\n<\/p><p class=\"oxy-text-10532-2306 oxy-text\">\nWe have also conducted clinical evaluations confirming the accuracy of measurements for fat-free mass, fat mass, appendicular skeletal muscle mass, and bone mineral content. All results and methodological details are presented in our scientific booklet.\n<\/p><\/div><\/div><div class=\"oxy-container-10532-2340 oxy-container art-stack\"><h2 class=\"oxy-text-10532-2309 oxy-text art-h2\">\nFrom theory to practice: the devices that measure these parameters\n<\/h2><div class=\"oxy-container-10532-2311 oxy-container rich art-text\"><p class=\"oxy-text-10532-2310 oxy-text\">\nBioimpedance is not only a principle: it is measured with devices adapted to each clinical or field setting.\n<\/p><\/div><div class=\"oxy-container-10532-2339 oxy-container art-cols art-cols--3\"><div class=\"oxy-container-10532-2320 oxy-container art-col\"><figure class=\"oxy-container-10532-2313 oxy-container art-fig\"><img decoding=\"async\" class=\"oxy-image-10532-2312 oxy-image art-col-img\" src=\"https:\/\/aminogram.com\/wp-content\/uploads\/2022\/11\/BIODY-XPERT-3-1.jpg\" alt=\"Analyseur de Bioimp\u00e9dancem\u00e9trie Portable Professionnel\" loading=\"lazy\" srcset=\"https:\/\/aminogram.com\/wp-content\/uploads\/2022\/11\/BIODY-XPERT-3-1.jpg 400w, https:\/\/aminogram.com\/wp-content\/uploads\/2022\/11\/BIODY-XPERT-3-1-150x300.jpg 150w, https:\/\/aminogram.com\/wp-content\/uploads\/2022\/11\/BIODY-XPERT-3-1-94x187.jpg 94w, https:\/\/aminogram.com\/wp-content\/uploads\/2022\/11\/elementor\/thumbs\/BIODY-XPERT-3-1-py7zrbkit0mj94zhxkx4ddkjnqu4tsmrf6d5f7answ.jpg 128w\" sizes=\"(max-width: 400px) 100vw, 400px\"><\/figure><h3 class=\"oxy-text-10532-2314 oxy-text art-h3\" id=\"biody-xpertzm3\">\nBiody Xpert<sup>ZM<\/sup>3\n<\/h3><div class=\"oxy-container-10532-2316 oxy-container rich art-text\"><p class=\"oxy-text-10532-2315 oxy-text\">\nCE-certified medical device for clinical body composition assessment using vectorial BIA and spectroscopy.\n<\/p><\/div><div class=\"oxy-container-10532-2319 oxy-container art-btn-row\"><a class=\"oxy-container-link-10532-2318 oxy-container-link btn btn-primary\" href=\"\/en\/biody-xpert-zm3\/\" target=\"_self\"><span class=\"oxy-text-10532-2317 oxy-text\">\nDiscover the Biody Xpert<sup>ZM<\/sup>3 device\n<\/span><\/a><\/div><\/div><div class=\"oxy-container-10532-2329 oxy-container art-col\"><figure class=\"oxy-container-10532-2322 oxy-container art-fig\"><img decoding=\"async\" class=\"oxy-image-10532-2321 oxy-image art-col-img\" src=\"https:\/\/aminogram.com\/wp-content\/uploads\/2025\/02\/bbis-nav-menu.webp\" alt=\"Analyseur de Spectroscopie par Bioimp\u00e9dance | Biody B.I.S\" loading=\"lazy\" srcset=\"https:\/\/aminogram.com\/wp-content\/uploads\/2025\/02\/bbis-nav-menu.webp 241w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/02\/bbis-nav-menu-191x300.webp 191w\" sizes=\"(max-width: 241px) 100vw, 241px\"><\/figure><h3 class=\"oxy-text-10532-2323 oxy-text art-h3\" id=\"biody-b-i-szm\">\nBiody B.I.S<sup>ZM<\/sup>\n<\/h3><div class=\"oxy-container-10532-2325 oxy-container rich art-text\"><p class=\"oxy-text-10532-2324 oxy-text\">\nBioimpedance spectroscopy for sport, nutrition and research: monitoring of body masses and hydration in the field.\n<\/p><\/div><div class=\"oxy-container-10532-2328 oxy-container art-btn-row\"><a class=\"oxy-container-link-10532-2327 oxy-container-link btn btn-primary\" href=\"\/en\/biody-b-i-s\/\" target=\"_self\"><span class=\"oxy-text-10532-2326 oxy-text\">\nDiscover Biody B.I.S\n<\/span><\/a><\/div><\/div><div class=\"oxy-container-10532-2338 oxy-container art-col\"><figure class=\"oxy-container-10532-2331 oxy-container art-fig\"><img decoding=\"async\" class=\"oxy-image-10532-2330 oxy-image art-col-img\" src=\"https:\/\/aminogram.com\/wp-content\/uploads\/2025\/02\/biody-manager-nav-menu.webp\" alt=\"Logiciel de composition corporelle \u2014 BiodyManager &amp; BiodyConnect\" loading=\"lazy\" srcset=\"https:\/\/aminogram.com\/wp-content\/uploads\/2025\/02\/biody-manager-nav-menu.webp 241w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/02\/biody-manager-nav-menu-191x300.webp 191w\" sizes=\"(max-width: 241px) 100vw, 241px\"><\/figure><h3 class=\"oxy-text-10532-2332 oxy-text art-h3\" id=\"biodymanager\">\nBiodyManager\n<\/h3><div class=\"oxy-container-10532-2334 oxy-container rich art-text\"><p class=\"oxy-text-10532-2333 oxy-text\">\nThe software that centralises measurements, organises follow-up over time and generates customisable reports, hosted in France (HDS).\n<\/p><\/div><div class=\"oxy-container-10532-2337 oxy-container art-btn-row\"><a class=\"oxy-container-link-10532-2336 oxy-container-link btn btn-primary\" href=\"\/en\/software\/\" target=\"_self\"><span class=\"oxy-text-10532-2335 oxy-text\">\nSee the BiodyManager software\n<\/span><\/a><\/div><\/div><\/div><\/div><div class=\"oxy-container-10532-2363 oxy-container art-stack\"><h2 class=\"oxy-text-10532-2341 oxy-text art-h2\">\nFrequently asked questions\n<\/h2><div class=\"oxy-container-10532-2362 oxy-container faq art-faq\"><details class=\"oxy-container-10532-2346 oxy-container faq-item\"><summary class=\"oxy-container-10532-2343 oxy-container faq-q\"><span class=\"oxy-text-10532-2342 oxy-text faq-q-text\">\nWhat is bioimpedance analysis?\n<\/span><\/summary><div class=\"oxy-container-10532-2345 oxy-container faq-a\"><p class=\"oxy-text-10532-2344 oxy-text\">\nA non-invasive method that measures body composition \u2014 fat mass, muscle mass and water \u2014 with a low-intensity electrical current, without pain or radiation.\n<\/p><\/div><\/details><details class=\"oxy-container-10532-2351 oxy-container faq-item\"><summary class=\"oxy-container-10532-2348 oxy-container faq-q\"><span class=\"oxy-text-10532-2347 oxy-text faq-q-text\">\nWhat does BIA actually measure?\n<\/span><\/summary><div class=\"oxy-container-10532-2350 oxy-container faq-a\"><p class=\"oxy-text-10532-2349 oxy-text\">\nThe body's resistance and reactance to the current; from these it derives body water and then fat mass and muscle mass through validated equations.\n<\/p><\/div><\/details><details class=\"oxy-container-10532-2356 oxy-container faq-item\"><summary class=\"oxy-container-10532-2353 oxy-container faq-q\"><span class=\"oxy-text-10532-2352 oxy-text faq-q-text\">\nWhat is the difference between BIA and BIS?\n<\/span><\/summary><div class=\"oxy-container-10532-2355 oxy-container faq-a\"><p class=\"oxy-text-10532-2354 oxy-text\">\nBIA uses one or a few frequencies; BIS sweeps a spectrum of frequencies and separates intra- and extracellular water better, which is useful in clinical follow-up.\n<\/p><\/div><\/details><details class=\"oxy-container-10532-2361 oxy-container faq-item\"><summary class=\"oxy-container-10532-2358 oxy-container faq-q\"><span class=\"oxy-text-10532-2357 oxy-text faq-q-text\">\nIs the measurement reliable?\n<\/span><\/summary><div class=\"oxy-container-10532-2360 oxy-container faq-a\"><p class=\"oxy-text-10532-2359 oxy-text\">\nYes, when the protocol is respected: lying position, correct contact points and no recent exercise. Tetrapolar measurement is the reference validated by ESPEN.\n<\/p><\/div><\/details><\/div><\/div><\/div><aside class=\"oxy-container-10532-2440 oxy-container clinic-aside\"><nav class=\"oxy-container-10532-2432 oxy-container side-nav toc\" aria-label=\"Contents\"><ul class=\"oxy-container-10532-2431 oxy-container toc-list\"><li class=\"oxy-container-10532-2367 oxy-container toc-item\"><a class=\"oxy-container-link-10532-2366 oxy-container-link toc-link\" href=\"#phase-angle-pha\" target=\"_self\"><span class=\"oxy-text-10532-2365 oxy-text\">\nPhase Angle (PhA)\n<\/span><\/a><\/li><li class=\"oxy-container-10532-2370 oxy-container toc-item\"><a class=\"oxy-container-link-10532-2369 oxy-container-link toc-link\" href=\"#impedance-ratio-ir\" target=\"_self\"><span class=\"oxy-text-10532-2368 oxy-text\">\nImpedance Ratio (IR)\n<\/span><\/a><\/li><li class=\"oxy-container-10532-2373 oxy-container toc-item\"><a class=\"oxy-container-link-10532-2372 oxy-container-link toc-link\" href=\"#pdc10\" target=\"_self\"><span class=\"oxy-text-10532-2371 oxy-text\">\nImportance of contact points\n<\/span><\/a><\/li><li class=\"oxy-container-10532-2376 oxy-container toc-item\"><a class=\"oxy-container-link-10532-2375 oxy-container-link toc-link\" href=\"#foot-foot\" target=\"_self\"><span class=\"oxy-text-10532-2374 oxy-text\">\nFoot - Foot\n<\/span><\/a><\/li><li class=\"oxy-container-10532-2379 oxy-container toc-item\"><a class=\"oxy-container-link-10532-2378 oxy-container-link toc-link\" href=\"#hand-foot\" target=\"_self\"><span class=\"oxy-text-10532-2377 oxy-text\">\nHand - Foot\n<\/span><\/a><\/li><li class=\"oxy-container-10532-2382 oxy-container toc-item\"><a class=\"oxy-container-link-10532-2381 oxy-container-link toc-link\" href=\"#hand-hand\" target=\"_self\"><span class=\"oxy-text-10532-2380 oxy-text\">\nHand - Hand\n<\/span><\/a><\/li><li class=\"oxy-container-10532-2385 oxy-container toc-item\"><a class=\"oxy-container-link-10532-2384 oxy-container-link toc-link\" href=\"#measurement-positions\" target=\"_self\"><span class=\"oxy-text-10532-2383 oxy-text\">\nMeasurement positions\n<\/span><\/a><\/li><li class=\"oxy-container-10532-2388 oxy-container toc-item\"><a class=\"oxy-container-link-10532-2387 oxy-container-link toc-link\" href=\"#the-lying-position\" target=\"_self\"><span class=\"oxy-text-10532-2386 oxy-text\">\nThe lying position\n<\/span><\/a><\/li><li class=\"oxy-container-10532-2391 oxy-container toc-item\"><a class=\"oxy-container-link-10532-2390 oxy-container-link toc-link\" href=\"#the-sitting-position\" target=\"_self\"><span class=\"oxy-text-10532-2389 oxy-text\">\nThe sitting position\n<\/span><\/a><\/li><li class=\"oxy-container-10532-2394 oxy-container toc-item\"><a class=\"oxy-container-link-10532-2393 oxy-container-link toc-link\" href=\"#the-standing-position\" target=\"_self\"><span class=\"oxy-text-10532-2392 oxy-text\">\nThe standing position\n<\/span><\/a><\/li><li class=\"oxy-container-10532-2397 oxy-container toc-item\"><a class=\"oxy-container-link-10532-2396 oxy-container-link toc-link\" href=\"#mono-multi-freq-bia\" target=\"_self\"><span class=\"oxy-text-10532-2395 oxy-text\">\nSingle-frequency, multi-frequency and spectroscopy\n<\/span><\/a><\/li><li class=\"oxy-container-10532-2400 oxy-container toc-item\"><a class=\"oxy-container-link-10532-2399 oxy-container-link toc-link\" href=\"#single-frequency\" target=\"_self\"><span class=\"oxy-text-10532-2398 oxy-text\">\nSingle-frequency\n<\/span><\/a><\/li><li class=\"oxy-container-10532-2403 oxy-container toc-item\"><a class=\"oxy-container-link-10532-2402 oxy-container-link toc-link\" href=\"#multi-frequency\" target=\"_self\"><span class=\"oxy-text-10532-2401 oxy-text\">\nMulti-frequency\n<\/span><\/a><\/li><li class=\"oxy-container-10532-2406 oxy-container toc-item\"><a class=\"oxy-container-link-10532-2405 oxy-container-link toc-link\" href=\"#spectroscopy\" target=\"_self\"><span class=\"oxy-text-10532-2404 oxy-text\">\nSpectroscopy\n<\/span><\/a><\/li><li class=\"oxy-container-10532-2409 oxy-container toc-item\"><a class=\"oxy-container-link-10532-2408 oxy-container-link toc-link\" href=\"#mono-multi-alg-bia\" target=\"_self\"><span class=\"oxy-text-10532-2407 oxy-text\">\nSingle-algorithm vs Multi-algorithms\n<\/span><\/a><\/li><li class=\"oxy-container-10532-2412 oxy-container toc-item\"><a class=\"oxy-container-link-10532-2411 oxy-container-link toc-link\" href=\"#single-algorithm-deductive\" target=\"_self\"><span class=\"oxy-text-10532-2410 oxy-text\">\nSingle-algorithm(deductive)\n<\/span><\/a><\/li><li class=\"oxy-container-10532-2415 oxy-container toc-item\"><a class=\"oxy-container-link-10532-2414 oxy-container-link toc-link\" href=\"#multi-algorithms-non-deductive\" target=\"_self\"><span class=\"oxy-text-10532-2413 oxy-text\">\nMulti-algorithms(non-deductive)\n<\/span><\/a><\/li><li class=\"oxy-container-10532-2418 oxy-container toc-item\"><a class=\"oxy-container-link-10532-2417 oxy-container-link toc-link\" href=\"#tetrapolar-measurement-the-reference-validated-by-espen\" target=\"_self\"><span class=\"oxy-text-10532-2416 oxy-text\">\nTetrapolar measurement: the reference validated by ESPEN\n<\/span><\/a><\/li><li class=\"oxy-container-10532-2421 oxy-container toc-item\"><a class=\"oxy-container-link-10532-2420 oxy-container-link toc-link\" href=\"#performance-complying-with-scientific-requirements-gold-stan\" target=\"_self\"><span class=\"oxy-text-10532-2419 oxy-text\">\nPerformance complying with scientific requirements (Gold Standard)\n<\/span><\/a><\/li><li class=\"oxy-container-10532-2424 oxy-container toc-item\"><a class=\"oxy-container-link-10532-2423 oxy-container-link toc-link\" href=\"#biody-xpertzm3\" target=\"_self\"><span class=\"oxy-text-10532-2422 oxy-text\">\nBiody Xpert<sup>ZM<\/sup>3\n<\/span><\/a><\/li><li class=\"oxy-container-10532-2427 oxy-container toc-item\"><a class=\"oxy-container-link-10532-2426 oxy-container-link toc-link\" href=\"#biody-b-i-szm\" target=\"_self\"><span class=\"oxy-text-10532-2425 oxy-text\">\nBiody B.I.SZM\n<\/span><\/a><\/li><li class=\"oxy-container-10532-2430 oxy-container toc-item\"><a class=\"oxy-container-link-10532-2429 oxy-container-link toc-link\" href=\"#biodymanager\" target=\"_self\"><span class=\"oxy-text-10532-2428 oxy-text\">\nBiodyManager\n<\/span><\/a><\/li><\/ul><\/nav><a class=\"oxy-container-link-10532-2435 oxy-container-link revue-box\" href=\"\/en\/scientific-review-page-form\/\" target=\"_self\"><h2 class=\"oxy-text-10532-2433 oxy-text revue-title\">\nRequest our scientific review\n<\/h2><img decoding=\"async\" class=\"oxy-image-10532-2434 oxy-image revue-img\" src=\"https:\/\/aminogram.com\/wp-content\/uploads\/2025\/12\/Revue-scientifique-1.webp\" alt=\"\" loading=\"lazy\" srcset=\"https:\/\/aminogram.com\/wp-content\/uploads\/2025\/12\/Revue-scientifique-1.webp 280w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/12\/Revue-scientifique-1-210x300.webp 210w, https:\/\/aminogram.com\/wp-content\/uploads\/2025\/12\/Revue-scientifique-1-131x187.webp 131w\" sizes=\"(max-width: 280px) 100vw, 280px\"><\/a><div class=\"oxy-container-10532-2439 oxy-container more-box\"><h2 class=\"oxy-text-10532-2436 oxy-text more-title\">\nNeed more information?\n<\/h2><p class=\"oxy-text-10532-2437 oxy-text more-text\">\nOur team is available to answer all your questions.\n<\/p><a class=\"oxy-text-link-10532-2438 oxy-text-link btn btn-primary\" href=\"#contact\" target=\"_self\">\nContact us\n<\/a><\/div><\/aside><\/div><\/section><\/main>","protected":false},"excerpt":{"rendered":"<p>Bioimpedance a non-invasive technology to understand what weight does not say. Home Bioimpedance How do BIA and BIS evaluate body composition? Bioimpedance analysis is a non-invasive method that measures body composition \u2014 fat mass, muscle mass and water \u2014 by sending a low-intensity electrical current through the body. It yields parameters such as phase angle [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_oxygen_hide_in_design_set":false,"_oxygen_tags":"","footnotes":""},"class_list":["post-10532","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/aminogram.com\/en\/wp-json\/wp\/v2\/pages\/10532","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aminogram.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/aminogram.com\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/aminogram.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aminogram.com\/en\/wp-json\/wp\/v2\/comments?post=10532"}],"version-history":[{"count":5,"href":"https:\/\/aminogram.com\/en\/wp-json\/wp\/v2\/pages\/10532\/revisions"}],"predecessor-version":[{"id":23688,"href":"https:\/\/aminogram.com\/en\/wp-json\/wp\/v2\/pages\/10532\/revisions\/23688"}],"wp:attachment":[{"href":"https:\/\/aminogram.com\/en\/wp-json\/wp\/v2\/media?parent=10532"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}