Both are oversimplified. This guide explains what the percentage on the segmental fat bar is measured against, what a value over 100% tells you, why it is usually highest on the trunk, how the lean bars differ, and how much weight to put on left-right differences. The honest summary: over 100% on the fat bar means more fat than the reference, not “normal-ish”.<\/strong> It is common, but common is not the same as fine.<\/p>\n Most InBody sheets show two charts that look alike and answer different questions:<\/p>\n Each is drawn as a bar with a percentage. People tend to read both the same way, and that is where confusion starts.<\/p>\n According to InBody’s training materials for its clinical models, the percentages are compared against a reference based on your height<\/em>, not on your current weight alone. For segmental lean, the upper bar compares each segment with the lean mass expected at an ideal weight for your height, and the lower bar compares it with your current weight. For segmental fat, InBody’s manual describes the chart as derived from the lean analysis and compared with the ideal for your height.<\/p>\n One honest caveat: the wording on different InBody pages varies between “ideal” and “average person of the same height”. If you need an exact definition for a clinical purpose, ask InBody’s technical team or check your specific model’s manual. What is consistent is the direction. 100% is the reference. Above 100% means more than the reference, below 100% means less.<\/strong><\/p>\n For fat, being above the reference is not neutral. If your total body fat is above the reference for your height, almost every segment will read over 100%, and the trunk usually reads highest because that is where adult fat commonly sits. Indians tend to carry more body fat at the same BMI, which is why an over-100% trunk is so common on Indian sheets. We cover that pattern in our post on thin-fat syndrome in India<\/a>.<\/p>\n Use the segmental fat bar alongside your whole-body percentage and your visceral fat reading, not instead of them. We do not publish a “normal trunk fat range” because the manufacturer’s documents we reviewed do not provide one. Visceral fat is a separate measurement; see our visceral fat guide<\/a>.<\/p>\n InBody itself describes the segmental fat values as estimates based on other body composition results. They are derived from the lean measurements rather than measured independently. That is useful for seeing the pattern of where fat sits, and it is a good reason not to read tiny differences or single percentages as precise facts.<\/p>\n The lean bar can mislead in a different way. Lean mass includes muscle, but also organs, bone and water. InBody USA has said it would be wrong to call the segmental lean chart a muscle chart. Water can inflate it: a swollen ankle after a sprain, for example, can push the lean reading for that leg up. If your fat-free mass looks surprisingly high and your ECW ratio<\/a> is also elevated, some of the “lean” may be fluid.<\/p>\n This is where InBody-branded sources disagree with each other, and no clinical consensus exists:<\/p>\nThe Two Segmental Charts Side by Side<\/h2>\n
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What “100%” Is Measured Against<\/h2>\n
Fat Bar Over 100%: What It Says<\/h2>\n
The Fat Bar Is an Estimate, Not a Separate Scan<\/h2>\n
The Lean Bar: Lean Is Not Muscle<\/h2>\n
Left-Right Gaps: What Counts as Meaningful?<\/h2>\n