Sports Medicine ( IF 9.3 ) Pub Date : 2022-07-08 , DOI: 10.1007/s40279-022-01714-y Yago M Dutra 1 , Elvis S Malta 1 , Amanda S Elias 1 , James R Broatch 2, 3 , Alessandro M Zagatto 1
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Background
Photobiomodulation therapy (PBMT) is defined as non-thermal electromagnetic irradiation through laser or light-emitting diode sources. In recent decades, PBMT has attracted attention as a potential preconditioning method. The current meta-analysis was conducted to assess the effectiveness of PBMT in improving mode-specific exercise performance in healthy young adults.
Methods
A computerized literature search was conducted, ending on 15 May 2022. The databases searched were PubMed, Cochrane Central Register of Controlled Trials, Embase, SPORTDiscus, and the Physiotherapy Evidence Database. Inclusion/exclusion criteria limited articles to crossover, double-blind, placebo-controlled studies investigating the PBMT effects as a preconditioning method. The included trials were synthesized according to exercise mode (single-joint, cycling, running, and swimming). All results were combined using the standardized mean differences (SMDs) method and the 95% confidence intervals (CIs) were described.
Results
A total of 37 individual studies, employing 78 exercise performance measurements in 586 participants, were included in the analyses. In single-joint exercises, PBMT improved muscle endurance performance (SMD 0.27, 95% CI 0.12–0.41; p < 0.01) but not muscle strength performance (p = 0.92). In cycling, PBMT improved time to exhaustion performance (SMD 0.35, 95% CI 0.10–0.59; p < 0.01) but had no effect on all-out sprint performance (p = 0.96). Similarly, PBMT had no effect on time to exhaustion (p = 0.10), time-trial (p = 0.61), or repeated-sprint (p = 0.37) performance in running and no effect on time-trial performance in swimming (p = 0.81).
Conclusion
PBMT improves muscle endurance performance in single-joint exercises and time to exhaustion performance in cycling but is not effective for muscle strength performance in single-joint exercises, running, or swimming performance metrics.
中文翻译：
解构光生物调节的增效作用：对其改善人类特定模式运动表现功效的系统评价和荟萃分析
背景
光生物调节疗法 (PBMT) 被定义为通过激光或发光二极管源进行的非热电磁辐射。近几十年来，PBMT 作为一种潜在的预处理方法引起了人们的关注。目前的荟萃分析旨在评估 PBMT 在改善健康年轻人特定模式运动表现方面的有效性。
方法
进行了计算机化文献检索，截止日期为 2022 年 5 月 15 日。检索的数据库是 PubMed、Cochrane 对照试验中央登记册、Embase、SPORTDiscus 和物理治疗证据数据库。纳入/排除标准将文章限制为交叉、双盲、安慰剂对照研究，调查 PBMT 效应作为预处理方法。纳入的试验是根据运动模式（单关节、骑自行车、跑步和游泳）合成的。使用标准化均值差 (SMD) 方法合并所有结果，并描述 95% 置信区间 (CI)。
结果
共有 37 项独立研究，对 586 名参与者进行了 78 项运动表现测量，被纳入分析。在单关节练习中，PBMT 提高了肌肉耐力表现（SMD 0.27，95% CI 0.12–0.41；p < 0.01）但没有改善肌肉力量表现（p = 0.92）。在自行车运动中，PBMT 改善了力竭时间表现（SMD 0.35，95% CI 0.10–0.59；p < 0.01）但对全速冲刺表现没有影响（p = 0.96）。同样，PBMT 对跑步中的力竭时间 ( p = 0.10)、计时赛 ( p = 0.61) 或重复冲刺 ( p = 0.37) 表现没有影响，对游泳计时赛表现没有影响 ( p = 0.81）。
结论
PBMT 提高了单关节运动中的肌肉耐力表现和自行车运动中的力竭时间表现，但对单关节运动、跑步或游泳表现指标中的肌肉力量表现无效。
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