不同压力下肢紧身服对跑步运动中摄氧量及运动后血乳酸恢复的影响

研究目的:研究穿着不同压力下肢紧身服对跑步过程中摄氧量以及运动后血乳酸恢复的影响。研究方法:选择北京体育大学12名健康男性长跑爱好者作为研究对象。受试者进行3次递增负荷最大摄氧量测试,在测试期间随机穿戴不同压力的下肢紧身服和普通运动长裤进行测试。最大摄氧量测试采用METAMAX 3B心肺功能测试系统进行测试,根据Bruce测试方案每3 min递增负荷,直至受试者运动至力竭。分别在安静时、运动后1 min、4 min、7 min和10 min 5个时刻测量血乳酸指标。采用Simi Aktisys 3D实验设备进行肌肉震动测试。采用一般线性模型的重复测量统计学方法比较3种情况下各项指标的差异。研究结果:运动过程中,高压力下肢紧身服在第二负荷上的耗氧量显著减小(P=0.047),但在其他负荷的耗氧量以及最大摄氧量没有出现显著性的差异。不同压力下肢紧身服对乳酸最大值以及乳酸消除速率没有产生显著性的影响。不同压力下肢紧身服均能够显著减小股四头肌、股二头肌和腓肠肌的肌肉震动(P=0.017、P=0.012、P=0.028),并且压力较大的下肢紧身服对肌肉的固定效果更好。研究结论:不同压力下肢紧身服对一次性高强度跑步运动过程中的最大摄氧量没有显著性的影响,但有可能在一定运动强度范围内减少运动过程中氧气的消耗。下肢紧身服对一次性高强度跑步运动后乳酸恢复没有显著性的影响。下肢紧身服能够降低肌肉的额外震动,并且压力越大,效果越好。

Effects of Different Pressure Lower-body Compression Garments on Oxygen Uptake during Running and Recovery of Blood Lactate after Exercise

Objective: To study the effects of different pressure lower-body compression garments on oxygen uptake during running and recovery of blood lactate after exercise.Methods:12 healthy male long-distance runners from Beijing Sports University were selected as subjects to conduct three incremental load maximal oxygen uptake tests. During the test, runners in different pressure lower-body compression garments and ordinary sports trousers were randomly tested. The maximal oxygen uptake test was performed using the METAMAX 3B Cardiopulmonary Function Test System, and the load was increased every 3 minutes according to the Bruce test protocol until the subject was exercised to exhaustion. The blood lactate was measured at 1 min, 4 min, 7 min and 10 min after exercise. Muscle vibration testing was performed using a Simi Aktisys 3D experimental device. The statistical measures of repeated measures using a general linear model were used to compare the differences between the three indicators.Results: During exercise, the oxygen consumption of the high-pressure lower-body compression garment on the second load was significantly reduced(P=0.047), but the oxygen consumption and maximum oxygen uptake of other loads did not appear significant difference. Different pressure lower-body compression garments did not have significant effect on the maximum lactate and lactate elimination rates. Different pressure lower-body compression garments can significantly reduce muscle vibrations in the quadriceps, biceps and gastrocnemius muscles(P=0.017, P=0.012, P=0.028), and the higher-pressure lower-body compression garment has a better fixation effect on muscles.Conclusion :Different pressure lower-body compression garments have no significant effect on the maximum oxygen uptake during one-time high-intensity running,but it is possible to reduce oxygen consumption during exercise within a certain range of exercise intensity. Lower-body compression garments have no significant effect on the recovery of blood lactate after one-time high-intensity running. Lower-body compression garments can reduce the extra vibration of muscles,and the greater the pressure,the better the effect.