目的:评估全身冷冻疗法(WBC)对篮球比赛后恢复的影响。
方法:使用交叉设计,17名青年男子球员(年龄16.2[1.2]y,身高190.5[9.4]厘米,身体质量79.2[9.6]kg,经验9.9[3.9]y)完成2场模拟比赛,其次是白细胞(4分钟,-75至-85°C)或安慰剂干预(CON)。逆跳高度,改变方向的表现,10米和20米冲刺时间,心率变异性(R-R间隔[Ln-rMSSD]之间的平方差之和的对数转换平方根),肌肉酸痛,并在赛前记录感知恢复(感知恢复状态量表[PRS]),赛后,恢复后,比赛后24小时。此外,Ln-rMSSD是在比赛日和第二天早上醒来时记录的。
结果:与CON相比,在匹配前和恢复后的白细胞中报告了更高的PRS值(P≤0.026),而任何其他指标在干预措施之间均未发现显着差异(P>.05)。关于时间的影响,我们的发现揭示了20米冲刺时间,Ln-rMSSD,从赛前到赛后,PRS在两种干预措施中都恶化了(即,急性变化,P≤.045),而肌肉酸痛仅在白细胞中恶化(P≤.003)。相反,反向运动-跳跃高度,改变方向,10米短跑表现不受急性期比赛影响(P>.05),虽然所有被调查的措施都没有在比赛后24小时显示损伤,与匹配前相比(P>0.05)。
结论:总体而言,这些发现表明,在调查样本中,WBC对改善运动后恢复大多无效,观察到的感知恢复的益处可能受到基线参与者状态的影响(即,与CON相比,WBC的PRS评分更高)。
OBJECTIVE: To assess the effect of whole-body cryotherapy (WBC) on postmatch recovery in basketball.
METHODS: Using a crossover design, 17 youth male players (age 16.2 [1.2] y, stature 190.5 [9.4] cm, body mass 79.2 [9.6] kg, experience 9.9 [3.9] y) completed 2 simulated matches, followed by WBC (4 min, -75 to - 85 °C) or a placebo intervention (CON). Countermovement-jump height, change-of-direction performance, 10- and 20-m sprint times, heart-rate variability (log-transformed squared root of the mean sum of the squared differences between R-R intervals [Ln-rMSSD]), muscle soreness, and perceived recovery (Perceived Recovery Status Scale [PRS]) were recorded at prematch, postmatch, postrecovery, and 24 hours postmatch. Additionally, Ln-rMSSD was recorded upon awakening on match day and the following morning.
RESULTS: Compared with CON, higher PRS values were reported in WBC at prematch and postrecovery (P ≤ .026), while no significant between-interventions differences were found for any other measure (P > .05). Regarding the effect of time, our findings revealed that 20-m sprint times, Ln-rMSSD, and PRS deteriorated in both interventions from prematch to postmatch (ie, acute changes, P ≤ .045), while muscle soreness worsened in WBC only (P ≤ .003). Conversely, countermovement-jump height, change-of-direction, and 10-m sprint performance were unaffected by match play in the acute phase (P > .05), while none of the investigated measures showed impairments at 24 hours postmatch, compared with prematch (P > .05).
CONCLUSIONS: Overall, these findings suggest that WBC was mostly ineffective for improving postexercise recovery in the investigated sample, with benefits observed for perceived recovery being potentially influenced by the participants\' status at baseline (ie, higher prematch PRS scores in WBC compared with CON).