Effects of Photobiomodulation Therapy in Strength Training and Detraining in Humans
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 40
- 试验地点
- 2
- 主要终点
- Peak Torque
研究概览
简要总结
In last years it has been demonstrated that photobiomodulation therapy (PBMT) has ergogenic effects, improving muscular performance and accelerating post-exercise recovery. However, many aspects related to these effects and its' clinical applicability remain unknown. Therefore, the aim of this project is to evaluate the ergogenic effects of PBMT in detraining after a strength training protocol.
详细描述
It will be carried out a randomized, triple-blind, placebo-controlled trial.
Forty-eight volunteers will be randomly allocated to four experimental groups:
- PBMT before the strength training sessions and PBMT during the detraining period;
- PBMT before the strength training sessions and placebo during the detraining period;
- Placebo before the strength training sessions and PBMT during the detraining period;
- Placebo before the strength training sessions and placebo during the detraining period .
The individuals randomly allocated to the different groups will be subjected to 12 consecutive weeks of dynamic strength training involving leg-press and knee extension exercises in leg-press and leg-extension machines, respectively, 2 times a week.After the 12-week training period, the volunteers will receive the application of PBMT or placebo depending on the group to which they are allocated for 4 weeks (2 times a week) without training.
The data will be collected by a blind assessor. It will be analyzed the muscular strength and the structural properties of quadriceps before starting the study (baseline), at 4, 8, and 12 weeks after starting the training period, and at 4 weeks after completing the training (detraining period), in both lower limbs.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Prevention
- 盲法
- Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
盲法说明
A researcher will program the device (placebo or PMBT) and will be instructed not to inform the volunteers or other researchers as to the type of treatment (PMBT or placebo). Therefore, the researcher responsible for the treatment will be blinded to the type of treatment being administered to the volunteers. The sounds and signals emitted from the device as well as the information displayed on the screen will be identical, regardless of the type of treatment (placebo or PBMT).
入排标准
- 年龄范围
- 18 Years 至 35 Years（Adult）
- 性别
- Male
- 接受健康志愿者
- 是
入选标准
- •Healthy men;
- •Aged from 18 to 35 years;
- •Complete at least 80% of the study procedures will be included in the study.
排除标准
- •History of musculoskeletal injury in the hip and knee regions in the 2 months before the study;
- •Become injured during the study;
- •Regularly use pharmacological agents and/ or nutritional supplements;
- •Signs and symptoms of any neurological, metabolic, inflammatory, pulmonary, oncological, or cardiovascular disease that may limit the execution of high-intensity exercises.
结局指标
主要结局
Peak Torque
时间窗: 16 weeks - 4 weeks after completing the training (detraining period).
The peak torque will be measured by Maximum Voluntary Contraction (MVC) test.
次要结局
- Muscle strength(4, 8, and 12 weeks after starting the training period, and at 4 weeks after completing the training (detraining period).)
- Muscle fiber pennation angle(4, 8, and 12 weeks after starting the training period, and at 4 weeks after completing the training (detraining period).)
- Muscle thickness(4, 8, and 12 weeks after starting the training period, and at 4 weeks after completing the training (detraining period).)
- Muscle fascicle length(4, 8, and 12 weeks after starting the training period, and at 4 weeks after completing the training (detraining period).)
- Peak Torque(4, 8, and 12 weeks after starting the training period.)
研究者
Ernesto Cesar Pinto Leal Junior
Full professor
University of Nove de Julho