Kwon Young S, Robergs Robert A, Mermier Christine M, Schneider Suzanne M, Gurney Alfred B
1Department of Kinesiology and Recreation Administration, Humboldt State University, Arcata, California; 2School of Human Movement Studies, Charles Sturt University, Bathurst, Australia; 3Department of Health, Exercise, and Sports Sciences, University of New Mexico, Albuquerque, New Mexico; and 4Department of Orthopedics and Rehabilitation, University of New Mexico, Albuquerque, New Mexico.
J Strength Cond Res. 2015 Aug;29(8):2261-9. doi: 10.1519/JSC.0b013e31829cef4e.
We previously reported that cold application to the palms between sets of high-intensity bench press exercise produces an ergogenic effect in men. In this study, we hypothesized that palm cooling (PC) or heating during rest intervals between high-intensity weight training sets will increase total repetitions and exercise volume load (kilograms) in resistance trained female subjects in a thermoneutral (TN) environment. Eight female subjects (mean ± SD, age = 25 ± 6 years, height = 160 ± 6 cm, body mass = 56 ± 7 kg, 1-repetition maximum [1RM] = 52 ± 6 kg, weight training experience = 6 ± 2 years) completed 4 sets of 85% 1RM bench press exercise to failure, with 3-minute rest intervals. Exercise trials were performed in a counterbalanced order on 3 days, separated by at least 3 days in TN, Palm heating (PH), and PC conditions. Heating and cooling were applied by placing both hands in a hand cooling device with the hand plate set to 45° C for heating and 10° C for cooling. Data were analyzed using a 2-factor repeated-measures analysis of variance and Tukey's post hoc tests. Palm cooling repetitions were significantly higher than TN repetitions during the second set, and PH repetitions were significantly higher than those of TN during the fourth set. Total exercise volume load (kilograms) for both PC (1,387 ± 358) and PH (1,349 ± 267) were significantly higher than TN (1,187 ± 262). In women, both heating and cooling of the palms between sets of resistance exercise increased the total exercise volume load performed. This ergogenic response to a peripheral sensory input is consistent with the central governor theory of muscular fatigue.
我们之前报道过，在高强度卧推练习的组间对手掌进行冷敷会对男性产生促力效应。在本研究中，我们假设在高强度负重训练组间的休息间隔期对手掌进行冷却（PC）或加热，会在热中性（TN）环境下增加抗阻训练女性受试者的总重复次数和运动容量负荷（千克）。八名女性受试者（均值±标准差，年龄 = 25±6岁，身高 = 160±6厘米，体重 = 56±7千克，1次重复最大值[1RM] = 52±6千克，负重训练经验 = 6±2年）以85%的1RM进行4组卧推练习直至力竭，每组间休息3分钟。运动试验在3天内以平衡顺序进行，在TN、手掌加热（PH）和PC条件下至少间隔3天。通过将双手放入手部冷却装置来进行加热和冷却，手部平板设置为45°C用于加热，10°C用于冷却。数据采用双因素重复测量方差分析和Tukey事后检验进行分析。在第二组中，手掌冷却时的重复次数显著高于TN时的重复次数，在第四组中，PH时的重复次数显著高于TN时的重复次数。PC（1387±358）和PH（1349±267）的总运动容量负荷（千克）均显著高于TN（1187±262）。在女性中，抗阻运动组间对手掌进行加热和冷却均增加了所完成的总运动容量负荷。这种对外周感觉输入的促力反应与肌肉疲劳的中枢调控理论一致。
