Abstract
919 The purpose of this study was to determine the validity of the Tanita TBF-515 Bioelectric Impedance (BIA) Scale for estimating body fat (% fat) in young adults (male and female). Twenty-one males (Age ± S.D. = 19.5 ± 1.14) and 34 females (19.0 ± 1.00) volunteered to have their % fat estimated by underwater weighing (UWW), 3 site skinfolds (SF) using sites recommended by Jackson and Pollock (Jackson and Pollock, Med. Sci. Sports Exerc. 13:76-90, 1985) and the Tainita TBF-515 BIA. Body composition assessment using all 3 methods compared favorably for the males, with no significant differences (p > 0.05) in % fat results (Mean ± S.D.; UWW = 10.8 ± 4.7, Tanita TBF-515 = 11.6 ± 4.7 and SF = 11.8 ± 4.9). However, the body composition assessments for the females resulted in significantly higher (p < 0.05) % fat values using the Tanita TBF-515 (23.4 ± 5.5*+) when compared to either UWW (17.8 ± 4.5*) or SF (19.7 ± 4.2+). These results indicate that UWW and SF provide a reliable means of body composition assessment for young males and females. However, the Tanita TBF-515 significantly overestimated % fat in young females. Therefore, the Tanita TBF-515 bioelectric impedance analyzer may not be appropriate for use in a population of young female adults. (*Significantly different from UWW, p<0.05; + significantly different from SF, p<0.05)
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