Effects of isotonic and isometric exercises with mist sauna bathing on cardiovascular, thermoregulatory, and metabolic functions
Effects of isotonic and isometric exercises with mist sauna bathing on cardiovascular, thermoregulatory, and metabolic functions
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DOI：
10.1007/s00484-013-0704-5
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发表时间：
2014-08-01
影响因子：
3.2
通讯作者：
Takada, Masumi
中科院分区：
文献类型：
--
作者：
Iwase, Satoshi;Kawahara, Yuko;Takada, Masumi
为探讨雾化桑拿运动对心血管功能、体温调节功能和代谢的影响，对6名健康青年男性(22+/-1岁，身高173+/-4 cm，体重65.0+/-5.0 kg)，在进行或不进行30W等长或等张运动的同时，在40A℃、100%相对湿度的条件下进行10min的雾化桑拿。通过测量鼓室温度、心率、收缩压和舒张压、胸汗率、胸部皮肤血流量以及血浆儿茶酚胺和皮质醇、葡萄糖、乳酸和游离脂肪酸水平来评估锻炼的效果。重复测量方差分析显示，血压、皮肤血流量、出汗率和总出汗量没有显著差异。等张运动时鼓室温度升高更明显，心率增加更明显。乳酸的变化表明，在等长运动中疲劳不是很大。血糖水平表明在等长运动中能量消耗更大。游离脂肪酸和儿茶酚胺水平分别表明，等长运动不会导致非常大的能量消耗和压力。等张运动降低乳酸水平，升高血浆游离脂肪酸水平的结果表明，疲劳和能量消耗较大，而感受到的应激相对较低。我们的结论是，考虑到葡萄糖和游离脂肪酸水平的变化，等张锻炼可能是雾气桑拿浴时更可取的锻炼形式。
To clarify the effects of isometric and isotonic exercise during mist sauna bathing on the cardiovascular function, thermoregulatory function, and metabolism, six healthy young men (22 +/- 1 years old, height 173 +/- 4 cm, weight 65.0 +/- 5.0 kg) were exposed to a mist sauna for 10 min at a temperature of 40 A degrees C, and relative humidity of 100 % while performing or not performing similar to 30 W of isometric or isotonic exercise. The effect of the exercise was assessed by measuring tympanic temperature, heart rate, systolic and diastolic blood pressure, chest sweat rate, chest skin blood flow, and plasma catecholamine and cortisol, glucose, lactate, and free fatty acid levels. Repeated measures ANOVA showed no significant differences in blood pressure, skin blood flow, sweat rate, and total amount of sweating. Tympanic temperature increased more during isotonic exercise, and heart rate increase was more marked during isotonic exercise. The changes in lactate indicated that fatigue was not very great during isometric exercise. The glucose level indicated greater energy expenditure during isometric exercise. The free fatty acid and catecholamine levels indicated that isometric exercise did not result in very great energy expenditure and stress, respectively. The results for isotonic exercise of a decrease in lactate level and an increase in plasma free fatty acid level indicated that fatigue and energy expenditure were rather large while the perceived stress was comparatively low. We concluded that isotonic exercise may be a more desirable form of exercise during mist sauna bathing given the changes in glucose and free fatty acid levels.