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- W2083098933 abstract "Dual Energy X-ray Absorptiometry (DEXA) has gained popularity as a valid measure of human body composition. A distinct advantage of this method is its ability to partition/section the body into regions for analysis. While much information has been reported in regards to body composition changes in overweight or sedentary populations, little information has been reported concerning the regional fat and lean composition of the human body of active males across the age span. PURPOSE: To assess the absolute and relative amounts of bone, fat and lean tissue in men across three age groups. METHODS: Moderately active and apparently healthy men (26.9±8.2y, 178.1±7.31cm, 84.2±14.5kg, 17.3±6.6% fat, n=334) had whole-body body composition scans completed using a Hologic QDR-4500W DEXA (version 9.80C). Participants were required to have been weight training on their entire body for a minimum of 6 months at least 3 days per week. All subjects were divided into three age cohorts (Y1: <25y, Y2:26–35y, and O:36–50y) and reported as M±SD, respectively. RESULTS: Multivariate ANO VA revealed no significant difference in height among all three groups and no difference in weight for Y1 (80.7±12.7kg) and Y2 (86.9±14.6kg). No differences in total bone mineral density were found for any age group. The O group had significantly greater body mass (p < 0.05) as well as absolute fat content on the upper body (right arm + left arm + trunk fat) (Y1:7.3±3.9, O:12.3±6.9kg, p < 0.05) and both legs (Y1:4.9±2.6, O:5.9±2.6 kg, p < 0.05) compared to Y1. Groups Y1 and Y2 were not significantly different in fat content of the legs but Y2 had significantly more trunk fat than Y1 (Y1: 6.1±7.5kg and Y2:9.1±13.7kg, p < .0.05). All groups were similar in lean tissue mass of the extremities, but Y1 had significantly less trunk lean tissue mass than the other two groups (Y1:30. 2±5.5, Y2:31.9±7.9, O:32.9±9.4 kg, p < 0.05). Comparing these tissues produced higher fat-to-lean ratios for the older group for the arms and trunk not for legs. CONCLUSIONS: The greater fat content of older men appears to be due to accumulation on the arms and trunk but not on the legs. It appears that pronounced changes in body composition distribution occur during 26–35 years of age in recreationally resistance-trained males. The pattern of adipose and lean tissue distribution throughout the age span appears to occur irrespective of their resistance training background in comparison to previous findings." @default.
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- W2083098933 date "2005-05-01" @default.
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- W2083098933 title "Regional Body Composition Analysis Using DEXA" @default.
- W2083098933 doi "https://doi.org/10.1097/00005768-200505001-01568" @default.
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