عنوان مقاله [English]
Background and Purpose: It has been suggested that resistance training (RT), especially when using high loads, increases central arterial stiffness. The aim of this study was to investigate the effects of low- versus high-load RT on arterial stiffness in young healthy men.
Methods: Participants (mean age 26.4±5.2 yrs; mean height 1.78±0.05 m; mean weight 79.2±6.4 kg; mean body mass index 24.9±1.5 kg/m2) were randomly assigned to a low-load RT where 25±3 repetitions to lifting failure were performed per set of exercise (LLLF, n =14), a high-load RT where 10±3 repetitions to lifting failure were performed per set of exercise (HLLF, n =13), or a control group who maintained their regular activity habits (Ctrl, n =13). Subjects in LLLF and HLLF groups performed RT three times a week for 10 weeks.
Results: Central arterial stiffness significantly increased in HLLF group after training (P=0/007), but no such changes were observed in the LLLF (P=0/12) or the Ctrl (P=0/177) group. In addition, analyses of covariance revealed significant mean difference between HLLF and LLLF (P=0/001) groups and between HLLF and Ctrl (P=0/001) groups in central arterial stiffness.
Conclusions: These results suggest that, unlike the HLLF training protocol, LLLF protocol does not unfavorably affect central arterial stiffness in young men.