不同有氧运动方式对健康人心肺适能影响的研究

目的:本研究旨在比较两种不同有氧锻炼方式对健康人心肺适能水平的影响。方法:将32名健康受试者随机分到跑步平台组和楼梯机组各16名,2组受试者分别进行跑步机及楼梯机有氧锻炼,每次30min,每天1次,共5d。结果:锻炼后,楼梯机组第1秒用力呼气容积(FEV1)、FEV1/FVC、最大通气量(MVV)、呼气峰流速(PEF)以及6min步行距离(6MWD)均较锻炼前明显提高(P<0.05),用力肺活量(forced vital capacity,FVC)比较差异无统计学意义;跑步平台组锻炼后FVC、FEV1、FEV1/FVC、6MWD、PEF较锻炼前明显提高(P<0.05),MVV变化差异无统计学意义。锻炼后,楼梯机组FEV1/FVC、MVV、6MWD、PEF提高幅度明显优于跑步平台组(P<0.05),但FVC、FEV1的提高幅度差异无统计学意义。结论:楼梯机锻炼和跑步平台锻炼对健康人的心肺适能水平都有显著影响,但楼梯机锻炼对健康人的MVV、FEV1/FVC、PEF及6MWD的提高幅度更大,即楼梯机锻炼在短时间内对健康人的心肺适能水平影响更显著。

Effect of different aerobic exercise modes on cardiorespiratory fitness in healthy people

Objective: To observe the effect of two different aerobic exercise modes (stair-machine exercise and treadmill exercise) on cardiorespiratory fitness in healthy people. Methods: Thirty-two healthy college students as subjects were divided into two groups randomly: walking group given walk exercise on treadmill (n=16) and stair-climbing group given stair-climbing exercise on stair-machine (n=16). The subjects from the walking group walked on the treadmill, 30 min per term, 5 terms per week, and 5 days in all. The subjects from stair-climbing group climbed stairs on the stair-machine with the same frequency as that in the walking group. Results: There were significant differences in MVV, FEV1, FEV1/FVC, PEF and 6MWD (P<0.05), but no significant difference in FVC in stair-climbing group before and after exercise. There were significant differences (P<0.05) in FVC, FEV1, FEV1/FVC, PEF and 6MWD, but no significant difference in MVV in walking group before and after exercise. There were significant differences (P<0.05) in the range of increases of MVV, FEV1/FVC, PEF and 6MWD between two groups. Conclusion: Two aerobic exercise modes have significant effects on cardiorespiratory fitness, but stair-climbing exercise has better effects on range of increases of MVV, FEV1/FVC, PEF and 6MWD than treadmill exercise in healthy people in short exercise term.