The purpose of this study was to examine the effect of 12-week combined resistance (2 day/wk) and aerobic (once weekly) exercise training on muscle oxidation capacity for the elderly. Twenty-two healthy female subjects (67±5 yr), 11 combined exercise training elderly (RT group: 66±5 yr), 11 control (aerobic exercise alone, once weekly) elderly (CON group: 68±5 yr) women participated in this study. We evaluated the muscle peak isokinetic power. We evaluated the half-recovery time of muscle re-oxygenation (RT1/2) using near-infrared spectrometer (NIRS) in the medial gastrocnemius during the recovery phase after treadmill walking test (2.4km/h, 12% 5min). RT group participated in resistance exercise training of 3-sessions of 3-sets of 10-15 repetitions of isokinetic machines exercise. The RT1/2 tended to be lowered in RT group after training, but the CON group did not. This study suggested that muscle oxidative capacity could be improved by 12-week combined exercise training for the elderly.

DESCENTE SPORTS SCIENCE Vol.28/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE