Immediate Effects of Low-level Laser Therapy (808nm) on Neuromuscular Performance After Muscle Fatigue: Randomized-blinded Clinical Trial
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 80
- 试验地点
- 1
- 主要终点
- Peak torque normalized by body weight
研究概览
简要总结
Objective: Investigating the immediate effects of Low Level Laser Therapy (LLLT) on neuromuscular performance in healthy subjects after an induced muscle fatigue protocol. Methods: Eighty volunteers of both genders aged between 18 and 28 years underwent a preliminary evaluation using surface electromyography and isokinetic dynamometer of the flexor muscles of the elbow. The subjects were randomly allocated into 4 groups: G1 was control group; G2 placebo; G3 laser applied before fatigue protocol; and G4 immediately after. Muscular fatigue protocol consisted of 30 maximal concentric isokinetic contractions at 120°/s of the elbow flexor muscles. An 808 nm equipment was used for applying laser therapy, with a power of 100 mW and total energy of 20 J. Volunteers were reassessed after interventions.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 盲法
- Triple (Participant, Investigator, Outcomes Assessor)
入排标准
- 年龄范围
- 18 Years 至 28 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Being between 18-28 years of age, having no pain in the shoulder area, elbow or hand, and not having suffered any to injury to the assessed upper limb in the last six months.
排除标准
- •Presenting pain that prevented the completion of the evaluation, subjects whose data were improperly recorded or if the volunteer withdrew from the study.
研究组 & 干预措施
Control group
Volunteers remained at rest before and after the fatigue protocol.
Placebo group
Volunteers were subjected to laser application simulation for approximately four minutes with a second pen of the laser device, which was disconnected and did not effectively irradiate energy.
干预措施: Placebo Laser (Device)
Laser before
Volunteers received effective application of laser before fatigue protocol.
干预措施: Low Level Laser Therapy (Device)
Laser after
Volunteers received effective application of laser after fatigue protocol.
干预措施: Low Level Laser Therapy (Device)
结局指标
主要结局
Peak torque normalized by body weight
时间窗: Change from baseline to one hour.
次要结局
未报告次要终点
研究者
Jamilson Simões Brasileiro
PhD
Universidade Federal do Rio Grande do Norte