Effects of walking training with blood flow restriction on the hemodynamics and perceptual responses among sedentary college students: a crossover randomized trial

Le résumé fourni par la source

College students often present a sedentary lifestyle, which could be ameliorated by exercise such as walking training. Previous investigations have indicated that low-intensity walking training with blood flow restriction (WT-BFR) can deliver comparable health benefits with moderate-to-high intensity walking training without restriction in different populations. However, less is known regarding the potential benefit of WT-BFR in sedentary college students. This study aimed to examine the effects of WT-BFR at different limb occlusion pressure (LOP) on hemodynamic and perceptual responses in sedentary college students using a randomized crossover design. A total of 60 participants completed the 5-minute WT-BFR with varying LOPs (i.e., 0%, 40%, 60%, and 80%). Hemodynamic parameters (blood pressure and heart rate) were measured before, immediately after, and 5 minutes post-intervention. Meanwhile, perceptual responses (perceived exertion and discomfort) and step numbers were recorded post-intervention. For the hemodynamic parameters, only 60% LOP showed a larger increase in heart rate after training than 0% LOP (walk training without BFR) condition (p=0.016). Other hemodynamic parameters did not show statistical differences among all levels of LOP conditions. With the increase of LOP, perceived exertion and discomfort were increased significantly (p<0.05), and the step numbers were reduced (p<0.05). A five-minute session of WT-BFR at 40% to 80% of LOP did not elicit significant hemodynamic changes in college students. Based on participant perception, an LOP range of 40%–60% is recommended. The long-term health effects of low-intensity WT-BFR among college students warrant further investigation.

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