Phototherapy for Improvement of Performance and Exercise Recovery: Comparison of 3 Commercially Available Devices
Phototherapy for Improvement of Performance and Exercise Recovery: Comparison of 3 Commercially Available Devices
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DOI：
10.4085/1062-6050-52.2.09
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发表时间：
2017-05-01
影响因子：
3.3
通讯作者：
Salvador, Mirian
中科院分区：
文献类型：
--
作者：
De Marchi, Thiago;Schmitt, Vinicius Mazzochi;Salvador, Mirian
内容：最近的研究表明，低功率激光/光的预防性使用对运动表现和活动后恢复具有致能作用。高功率激光器/光设备的制造商声称，这些可以产生相同的临床效益，增加功率和减少照射时间;然而，研究与高功率激光器是缺乏的。目的：为了评估所观察到的光治疗效果的幅度与3个市售设备。设计：随机双盲安慰剂对照研究。设置：实验室。患者或其他参与者：干预：参与者被随机分为4组：安慰剂组、高功率连续激光/光组、低功率连续激光/光组或低功率脉冲激光/光组（包括激光和发光二极管）。将180 J或安慰剂单剂量应用于股四头肌。主要结果测量：从基线到离心运动方案后96小时的最大自主收缩、延迟性肌肉酸痛（DOMS）和肌酸激酶（CK）活性。与安慰剂组和高功率连续激光组相比，低功率脉冲激光/光组保持了最大自主收缩。光组在各时间点均显著高于对照组（P <0.05）。在所有时间点，低功率脉冲激光/光显示出比所有组更少的DOMS（P <0.05）。在任何时间点，与任何组相比，高功率连续激光/光对最大自主收缩、CK活性或DOMS均未表现出任何积极影响。在所有时间点，低功率脉冲激光/光与安慰剂（P <0.05）和高功率连续激光/光（P <0.05）相比，肌酸激酶活性降低。高功率连续激光/光导致增加CK活性与安慰剂相比，从1至24 hours（P < .05）。结论：低功率脉冲激光/光表现出更好的结果比低功率连续激光/光或高功率连续激光/光与安慰剂相比，在所有结果的措施。与安慰剂相比，使用高功率连续激光/光的CK活性增加，需要进一步研究其对肌肉损伤相关其他因素的影响。
Context: Recent studies suggest the prophylactic use of low-powered laser/light has ergogenic effects on athletic performance and postactivity recovery. Manufacturers of highpowered lasers/light devices claim that these can produce the same clinical benefits with increased power and decreased irradiation time; however, research with high-powered lasers is lacking.Objective: To evaluate the magnitude of observed phototherapeutic effects with 3 commercially available devices.Design: Randomized double-blind placebo-controlled study.Setting: Laboratory.Patients or Other Participants: Forty healthy untrained male participants.Intervention(s): Participants were randomized into 4 groups: placebo, high-powered continuous laser/light, lowpowered continuous laser/light, or low-powered pulsed laser/light (comprising both lasers and light-emitting diodes). A single dose of 180 J or placebo was applied to the quadriceps.Main Outcome Measure(s): Maximum voluntary contraction, delayed-onset muscle soreness (DOMS), and creatine kinase (CK) activity from baseline to 96 hours after the eccentric exercise protocol.Results: Maximum voluntary contraction was maintained in the low-powered pulsed laser/light group compared with placebo and high-powered continuous laser/light groups in all time points (P < .05). Low- powered pulsed laser/light demonstrated less DOMS than all groups at all time points (P < .05). High-powered continuous laser/light did not demonstrate any positive effects on maximum voluntary contraction, CK activity, or DOMS compared with any group at any time point. Creatine kinase activity was decreased in low-powered pulsed laser/light compared with placebo (P < .05) and high-powered continuous laser/light (P < .05) at all time points. High-powered continuous laser/light resulted in increased CK activity compared with placebo from 1 to 24 hours (P < .05).Conclusions: Low-powered pulsed laser/light demonstrated better results than either low-powered continuous laser/light or high-powered continuous laser/light in all outcome measures when compared with placebo. The increase in CK activity using the high-powered continuous laser/light compared with placebo warrants further research to investigate its effect on other factors related to muscle damage.