Physical Activity is Associated with Percent Body Fat and Body Composition but not Body Mass Index in White and Black College Students.

摘要: The objective of this study was to examine the association self-reported physical activity (PA) with body composition in 290 college students (49% male, 60% White) 18-25 years age. Outcome measures included: PA levels calculated MET-hrs·wk-1 from International Physical Activity Questionnaire (IPAQ); mass index (BMI; kg·m-2); and variables estimated by dual-energy X-ray absorptiometry (DXA). Mean sample were 39.8 ± 23.8 MET-hrs·wk-1. Participants divided into quartiles levels: ≥0 <24.0, ≥24.0 <34.0, ≥34.0 <51.25, ≥51.25 MET-hrs ·wk-1 compared group. Chi-square analyses revealed a significant difference for gender quartile [χ2 (3, N=290) = 32.42, p < 0.0001], race (9, 37.82, 0.0001]. inversely correlated %BF (r -0.40, 0.0001) but not BMI 0.05, 0.43). When comparing across quartiles, no differences observed BMI; however, subjects highest had lower percent fat (%BF) (FM), higher lean-tissue (LTM) other three groups. In cohort young adults, participants group more fit profile (e.g., %BF, FM, LTM) which reflected independent race.