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69名男性青年,分成冷,热锻炼和相关的对照4大组。冷,热锻炼分别为5和2周,获得了习服。冷习服后常温下代谢率降低,在Td—5.5℃ 40min增幅降低50％,80min较40min增高14.3～15.4％,并由负值变为正值,120min较80min又增高21.4～23.6％。冷对照组初期增幅较大,中期和后期仅分别增高0.4％和16.3％。锻炼组寒颤迟。程度轻.热习服后常温下代谢率较高,在Td37℃和Td24℃分别踏车(100W)30min和力竭功量时,代谢率较锻练前增高6.9～10.6％和4.4～16.6％,力竭功量显著增加。热对照组在Td37℃时减少9％和15.3％,Td24℃时则增高4.1％和18.1％,力竭功量变化不显著。在越野或长跑锻炼过程中,后7.8天代谢率仅为头2.3天的80％和74％,锻炼组热行军代谢率降低3％,对照组仅降低1％。
69 male youth, divided into four groups of cold, hot exercise and related control. Cold and hot workouts were 5 and 2 weeks respectively, gaining accustomed. After cold acclimation, the metabolic rate decreased at room temperature, decreased by 50% at 40d at Td-5.5 ℃, increased by 14.3 ~ 15.4% at 80min compared with 40min, and changed from negative to positive, increased by 21.4 ~ 23.6% at 120min compared with 80min. The initial increase in the cold control group was larger, with an increase of only 0.4% and 16.3% in the middle and later stages, respectively. Exercise group chills late. The metabolic rate was higher at room temperature after heat acclimation, and the metabolic rate increased 6.9 ~ 10.6% and 4.4 ~ 16.6% compared with pre-exercise at Td37 ℃ and Td24 ℃, respectively. , Exhaustion power increased significantly. The thermal control group decreased by 9% and 15.3% at Td 37 ℃, increased by 4.1% and 18.1% at Td 24 ℃, and the change of exhaustion power did not change significantly. During the cross-country or long-distance training exercise, the metabolic rate after 7.8 days was only 80% and 74% of the first 2.3 days, while the exercise group’s exercise rate was reduced by 3% and the control group by only 1%.