Key result
Upper-limb resistance training significantly reduced the augmentation index (4.7% pre vs. 0.3% post, P=0.01) in young adults over 8 weeks, while lower-limb training showed no negative influence.
Why the study?
This study aimed to investigate the effect of limb-specific resistance training on central and peripheral arterial stiffness in young adults.
Does limb-specific resistance training improve central and peripheral artery stiffness in healthy young adults?
RCT (n=24)
Does limb-specific resistance training improve central and peripheral artery stiffness in healthy young adults?
p-value: p=0.01
Upper-limb resistance training for 8 weeks effectively decreases central artery wave reflection and may improve local peripheral artery stiffness in healthy young adults.
URT may reduce central wave reflection in young adults; leaves open effects of limb-specific training on stiffness.
This study aimed to investigate the effect of limb-specific resistance training on arterial stiffness in young adults. Twenty-four participants were randomly assigned to three groups: upper-limb resistance training (n = 8 (URT)), lower-limb resistance training (n = 8 (LRT)), and control group (n = 8 (CON)). Both URT and LRT groups performed the limb-specific resistance training at 70–80% of one-repetition maximum twice a week for 8 weeks. The aortic pulse wave velocity and augmentation index (AIx) were measured by the SphygmoCor XCEL to assess central artery stiffness. Peripheral artery stiffness was evaluated by brachial to radial artery pulse wave velocity (ArmPWV) and femoral to posterior tibial artery pulse wave velocity (LegPWV) using Doppler flowmeters. URT significantly reduced AIx (4.7 ± 3.0 vs. 0.3 ± 2.9%, pre vs. post, P = 0.01), and ArmPWV presented a tendency to decrease following URT (10.4 ± 0.3 vs. 8.6 ± 0.8 m/s, pre vs. post, P = 0.06). LRT showed no negative influence on central and peripheral artery stiffness. Changes in serum triglyceride and leg lean body mass after resistance training were significantly associated with changes in AIx and LegPWV, respectively. URT is beneficial in decreasing central artery wave reflection and may help to improve local peripheral artery stiffness even in healthy young adults.
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Kim et al. (2021) conducted an RCT in Healthy young adults (n=24). Limb-specific resistance training (upper-limb or lower-limb) vs. Control group was evaluated on Central artery stiffness (aortic pulse wave velocity and augmentation index) and peripheral artery stiffness (p=0.01). Upper-limb resistance training significantly reduced the augmentation index (4.7% pre vs. 0.3% post, P=0.01) in young adults over 8 weeks, while lower-limb training showed no negative influence.
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