Abstract

Whole body protein utilization (WBPU), which includes flux (Q), protein synthesis (PS), protein breakdown (PB), and whole body protein balance (WBPB), provides insight regarding muscle mass, a criterion for sarcopenia. To characterize yoga's impact on WBPU, body composition and functional measures in healthy (50-65 years) women. WBPU and functional measures were compared between women who routinely practiced yoga (YOGA; n = 7) and nonactive counterparts (CON; n = 8). Q (0.61 ± 0.06 vs. 0.78 ± 0.07, p = .04), PS (3.07 ± 0.37 vs. 4.17 ± 0.40, p = .03), PB (2.59 ± 0.48 vs. 3.80 ± 0.48, p = .05) were lower, and lean body mass higher (64 ± 1 vs. 58 ± 2%, p ≤ .01) for YOGA vs. CON, respectively. WBPB and functional measures were similar. Routine yoga practice influenced WBPU in healthy older women. Study findings are novel and provide a basis for future investigations evaluating long-term benefits of yoga as an alternative mode of exercise for maintaining muscle mass in support of active aging.

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