Chwalbińska-Moneta J, Hänninen O
Department of Applied Physiology, Medical Research Center, Polish Academy of Sciences, Warsaw.
Int J Sports Med. 1989 Feb;10(1):25-9. doi: 10.1055/s-2007-1024868.
The influence of 10 min warming-up at 40% VO2 max on thermal, circulatory, and metabolic responses to an incremental exercise to exhaustion as well as on the anaerobic threshold at the blood lactate level of 4 mmol.l-1 (AT) and the individual anaerobic threshold (IAT) was investigated in eight cross-country skiers. During exercise preceded by warming-up, the mean skin temperature (T sk) and external auditory canal temperature (Tac) did not change significantly in contrast to exercise without warming-up, producing a rise in both T sk and Tac (by approx. 1.2 degrees C and 1.1 degrees C, respectively). Warming-up did not alter the course of the rectal temperature changes during exercise. With warming-up skin humidity rose immediately after the beginning of exercise, whereas the onset of sweating without warming-up appeared much later at higher work intensities. Warming-up did not change the circulatory and ventilatory responses to incremental exercise and the oxygen uptake (VO2) either at submaximal or maximal work loads. With warming-up a significant increase was found in the threshold work load both at the AT and the IAT. The data demonstrated that warming-up has an advantageous effect on the efficiency of thermoregulation in endurance-trained athletes producing an early sweating response to the incremental exercise that results in attenuation of hyperthermia. An increase in the anaerobic threshold during incremental exercise preceded by warming-up may indicate an enhancement of the endurance capacity subsequent to warming-up.
研究了8名越野滑雪运动员在以40%最大摄氧量进行10分钟热身运动后，对渐增负荷运动至疲劳的热、循环和代谢反应，以及对血乳酸水平为4 mmol·l-1时的无氧阈（AT）和个体无氧阈（IAT）的影响。与未进行热身运动的情况相比，在有热身运动的情况下，运动期间平均皮肤温度（Tsk）和外耳道温度（Tac）没有显著变化，而未进行热身运动时二者均升高（分别约升高1.2℃和1.1℃）。热身运动并未改变运动期间直肠温度的变化过程。有热身运动时，运动开始后皮肤湿度立即升高，而未进行热身运动时，在更高运动强度下出汗开始得要晚得多。热身运动并未改变对渐增负荷运动的循环和通气反应，以及在次最大或最大工作负荷下的摄氧量（VO2）。有热身运动时，AT和IAT的阈工作负荷均显著增加。数据表明，热身运动对耐力训练运动员的体温调节效率有有利影响，能使对渐增负荷运动产生早期出汗反应，从而减轻体温过高。在有热身运动的渐增负荷运动期间无氧阈的增加可能表明热身运动后耐力能力增强。
