Background: Resistance training has been increasingly incorporated into the overall exercise program because of its impact on muscle strength, functional capacity, and osteoporosis. High-intensity resistance training increases arterial stiffness. However, the effect of moderate-intensity resistance training on arterial stiffness is unknown.
Objective: To determine whether 12 weeks of moderate-intensity resistance training increases arterial stiffness in middle-aged women.
Methods: Thirty-five middle-aged women (32・9 years old) volunteered to participate. The subjects were randomly assigned to one of the following interventions: resistance training group, aerobic exercise training group, or control group. Resistance training group and aerobic exercise training group performed 12 weeks of moderate-intensity resistance training or aerobic exercise training (two days a week).
Results: In resistance training group, one-repetition maximal strength significantly increased after the intervention. Interestingly, aortic (carotid-femoral) pulse wave velocity (PWV), an index of arterial stiffness, and peripheral (femoral-ankle) PWV did not change with moderate-intensity resistance training. On the other hand, in aerobic exercise training group, carotid-femoral PWV significantly decreased after the intervention. Resistance training and aerobic exercise training did not affect blood pressure.
Conclusions: The present study demonstrated that moderate-intensity resistance training did not increase arterial stiffness in middle-aged women, which may have great significance for health promotion with resistance training.
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