Jeong Y O, Tokura H
Department of Environmental Health, Nara Women's University, Japan.
J Hum Ergol (Tokyo). 1995 Jun;24(1):25-31.
The experiment was done to investigate the effects of wearing two different clothing ensembles on endurance performance of handgrip exercise in 7 female subjects. Subjects walked on the ground for 1 h where air temperature ranged from 21 to 25 degrees C, glove temperature from 22 to 28 degrees C, relative humidity from 30 to 50% RH, air movement from 0.3 to 0.90 m/s, wearing the clothing ensemble HALF or LONG. The clothing ensemble HALF consisted of half-sleeved shirts, knee-length trousers, sandals, hat and LONG of long-sleeved shirts, long trousers, gloves, socks, walking shoes, hat. After 1 h of walking, the subjects exercised with a hand ergometer in a climatic chamber (25 +/- 1 degrees C, 50 +/- 10% RH) until volitional exhaustion. Rectal temperature, heart rate, body weight loss, number of contractions and strength of each contraction were measured during the experiment. Major findings were as follows: 1) Number of contractions in handgrip exercise after 1 h of walking was significantly greater in clothing ensemble HALF than in LONG, for which lower maintenance of rectal temperature during 1 h of walking on the ground in HALF might be responsible. 2) There was no significant difference in the strength of contraction between two clothing ensembles. Our present results suggest that how to wear clothing is of significance for the endurance performance of handgrip exercise.
该实验旨在研究7名女性受试者穿着两种不同服装组合对手握力运动耐力表现的影响。受试者在地面行走1小时，期间气温在21至25摄氏度之间，手套温度在22至28摄氏度之间，相对湿度在30%至50%之间，空气流速在0.3至0.90米/秒之间，分别穿着HALF或LONG服装组合。HALF服装组合包括半袖衬衫、齐膝长裤、凉鞋、帽子；LONG服装组合包括长袖衬衫、长裤、手套、袜子、步行鞋、帽子。行走1小时后，受试者在气候室（25±1摄氏度，50±10%相对湿度）中使用手动测力计进行运动，直至自觉疲劳。实验过程中测量直肠温度、心率、体重减轻、收缩次数以及每次收缩的力量。主要研究结果如下：1）行走1小时后，HALF服装组合的手握力运动收缩次数显著多于LONG服装组合，这可能是因为穿着HALF服装组合在地面行走1小时期间直肠温度维持较低水平。2）两种服装组合的收缩力量没有显著差异。我们目前的结果表明，着装方式对手握力运动的耐力表现具有重要意义。
