[Comparison of methods for estimating percent body fat in distance-runners].
A comparative study was conducted between two independent methods to estimate body fat in 13 college male distance-runners (20.2 +/- 1.1 yrs) and 11 male college students (19.6 +/- 0.7 yrs) as control group. The methods dealt with different body component parameters. Body fat was estimated (1) in terms of total body water based on the analysis of dilution of orally ingested deuterium oxide (D2O) in urine, and (2) in terms of body density based on underwater weighing. The results were as follows: 1) The skinfold thickness at 14 sites in distance-runners were thinner than those in control group. The mean values for subcutaneous fat in distance-runners were 4.3 +/- 0.7 kg (7.2 +/- 1.1%), which were lower than those (8.3 +/- 2.7 kg & 13.3 +/- 3.4%) in control group significantly. Oh the other hand, the mean values for internal fat in distance-runners were 8.7 +/- 1.4 kg (14.4 +/- 1.6%), which were larger than those (6.5 +/- 3.1 kg & 10.2 +/- 4.3%) in control group. 2) The mean values for percent body fat in control group were 16.1 +/- 1.6% by skinfolds method, 20.2 +/- 5.1% by body density method and 23.5 +/- 4.6% by total body water method. The estimated values of percent body fat by the methods of body density and total body water were approximately the same. 3) The mean values for percent body fat in distance-runners were 11.9 +/- 1.4% by skinfolds method, 11.8 +/- 1.7% by body density method and 21.5 +/- 1.9% by total body water method. The estimated values of percent body fat in distance-runners were lower than those in control group.(ABSTRACT TRUNCATED AT 250 WORDS)
Mitsuzono
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R
Faculty of Commerce, Kurume University.
Komiya
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S
D000273:Adipose Tissue; D000328:Adult; D001834:Body Water; D006801:Humans; D008297:Male; D012420:Running; D012885:Skinfold Thickness