Int J Sports Physiol Perform. 2018 May 1;13(5):584-589. doi: 10.1123/ijspp.2017-0334. Epub 2018 May 23.
To examine whether donning lower-body garments fitted with cooled phase change material (PCM) would enhance recovery after a soccer match.
In a randomized, crossover design, 11 elite soccer players from the reserve squad of a team in the second-highest league in England wore PCM cooled to 15°C (PCM) or left at ambient temperature (PCM; sham control) for 3 h after a soccer match. To assess recovery, countermovement jump height, maximal isometric voluntary contraction (MIVC), muscle soreness, and the adapted Brief Assessment of Mood Questionnaire (BAM+) were measured before 12, 36, and 60 h after each match. A belief questionnaire was completed preintervention and postintervention to determine the perceived effectiveness of each garment.
Results are comparisons between the 2 conditions at each time point postmatch. MIVC at 36 h postmatch was greater with PCM versus PCM (P = .01; ES = 1.59; 95% CI, 3.9-17.1%). MIVC also tended to be higher at 60 h postmatch (P = .05; ES = 0.85; 95% CI, -0.4% to 11.1%). Muscle soreness was 26.5% lower in PCM versus PCM at 36 h (P = .02; ES = 1.7; 95% CI, -50.4 to -16.1 mm) and 24.3% lower at 60 h (P = .04; ES = 1.1; 95% CI, -26.9 to -0.874 mm). There were no between-conditions differences in postmatch countermovement jump height or BAM+ (P > .05). The belief questionnaire revealed that players felt the PCM was more effective than the PCM after the intervention (P = .004).
PCM cooling garments provide a practical means of delivering prolonged postexercise cooling and thereby accelerate recovery in elite soccer players.
探究在足球赛后穿配有冷却相变材料（PCM）的下装是否有助于恢复。
在一项随机交叉设计中，来自英格兰第二高级联赛球队预备队的 11 名精英足球运动员在一场足球赛后穿着冷却至 15°C（PCM）或保持室温（PCM；假对照）的 PCM 3 小时。为了评估恢复情况，在每次比赛后 12、36 和 60 小时测量了纵跳高度、最大等长随意收缩（MIVC）、肌肉酸痛和适应后的简明心境问卷（BAM+）。在干预前后完成了信念问卷，以确定对每种服装的感知效果。
结果是每场比赛后每个时间点的 2 种条件之间的比较。36 小时后，PCM 组的 MIVC 大于 PCM 组（P = .01；ES = 1.59；95%CI，3.9-17.1%）。60 小时后，MIVC 也有升高趋势（P = .05；ES = 0.85；95%CI，-0.4%至 11.1%）。36 小时后，PCM 组的肌肉酸痛比 PCM 组低 26.5%（P = .02；ES = 1.7；95%CI，-50.4 至-16.1mm），60 小时后低 24.3%（P = .04；ES = 1.1；95%CI，-26.9 至-0.874mm）。比赛后，PCM 与 PCM 之间的纵跳高度或 BAM+ 没有差异（P > .05）。信念问卷显示，球员们认为干预后 PCM 比 PCM 更有效（P = .004）。
PCM 冷却服装提供了一种实用的方法，可以提供长时间的运动后冷却，从而加速精英足球运动员的恢复。
