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目的:确定静态拉伸练习可增加心率以及耗氧量的范围,以及该增加量是否满足有氧运动热身要求。方法:15名男大学生与16名女大学生在12min被动静态拉伸或者12min假拉伸(采用姿势移动,但未将肌肉拉伸开)后测量心率和耗氧量。共进行4种不同的下半身拉伸,每种拉伸持续30 s,再转向另一种拉伸,重复4轮。通过测量12 min内逐次呼吸平均量确定耗氧量。每30 s获取一次心率,取24次测量心率的平均值。测量耗氧量为最大值的60%时骑自行车7 min积累的氧赤字,从而确定热身效果。结果:被动静态拉伸的心率和耗氧量均显著高于假拉伸,分别高出7.5%((84±11)次/min vs.(78±12)次/min),p<0.05)和71%((0.53±0.13)mL/min vs.(0.38±0.11)mL/min,p<0.05)。氧赤字无显著差异((0.64±1.54)L vs.(0.72±1.61)L)。结论:被动静态拉伸能提高心率及耗氧量,说明代谢活动在没有肌肉激活的条件下依然可以增加,但提高的程度不足以达到热身效果。
Objectives: To determine whether static stretching exercises can increase heart rate and the range of oxygen consumption, and whether this increase satisfies the cardio thermal warm-up requirements. Methods: Fifteen male college students and 16 female college students measured heart rate and oxygen consumption after 12 minutes of passive static stretching or 12 minutes of pseudo stretching (using the posture to move, but not stretching the muscles). A total of 4 different lower body stretch, each stretch for 30 s, then to another stretch, repeat 4. Oxygen consumption was determined by measuring the average number of breaths within 12 min. Take the heart rate every 30 seconds and take the average of 24 heart rate measurements. The oxygen deficit accumulated by cycling for 7 minutes was measured at 60% of maximum oxygen consumption to determine the warm-up effect. Results: The heart rate and oxygen consumption of passive static stretch were significantly higher than that of false stretch (7.5% vs 84 ± 11/78 ± 12 / min, P <0.05) And 71% ((0.53 ± 0.13) mL / min vs. (0.38 ± 0.11) mL / min, p <0.05). Oxygen deficit no significant difference ((0.64 ± 1.54) L vs. (0.72 ± 1.61) L). Conclusion: Passive static stretching can increase heart rate and oxygen consumption, indicating that metabolic activity can still be increased without muscle activation, but the improvement is not enough to achieve warm-up effect.