Whole-Body Photobiomodulation Use in Professional Soccer Players During a State Championship
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 发起方
- 入组人数
- 24
- 试验地点
- 1
- 主要终点
- Delayed Onset Muscle Soreness (DOMS)
研究概览
简要总结
This study aims to investigate the effects of whole-body photobiomodulation on professional soccer players during a state championship. The primary question is whether photobiomodulation improves recovery, reduces muscle fatigue, and enhances performance compared to standard training without photobiomodulation.
详细描述
Detailed Description:
This randomized, controlled clinical trial aims to evaluate the effects of whole-body photobiomodulation (PBM) on recovery and performance in professional soccer players during a state championship.
The intervention will be performed twice weekly on non-consecutive days for 8 weeks, in combination with each athlete's standard training routine. Participants will be allocated to either an active PBM group or a sham PBM group, both following identical procedures to maintain blinding.
Throughout the study, participants will complete scheduled assessments at baseline, during, and after the 8-week period to monitor performance, muscle soreness, and hematological responses. Data will be analyzed using appropriate statistical tests, with a significance level of 5% (two-tailed).
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Triple (Participant, Investigator, Outcomes Assessor)
盲法说明
Triple-masked trial. Participants wear protective eyewear; the sham device is physically identical and runs the same schedule, fan noise, and indicator covers, but emits no therapeutic light. Operators who run sessions are distinct from outcomes assessors; participants and assessors are unaware of group assignment. Scheduling and room procedures minimize cross-talk between teams. Randomization and assignment are concealed using sealed, opaque envelopes prepared by an independent researcher.
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
- •Male professional soccer players currently competing in the championship
- •Age 18-35 years
- •Training frequency ≥5 times per week
- •Able to attend all PBM/sham sessions and all assessments during the 8-week intervention
- •Signed informed consent
排除标准
- •Lower-limb musculoskeletal injury in the last 6 months or currently receiving treatment
- •Current use of phototherapy or any other recovery-enhancing modality
- •Chronic medical conditions that may affect performance or recovery
- •Known sensitivity or contraindication to light-based therapies
- •Inability to comply with the intervention or training schedule
研究组 & 干预措施
Active PBM
Whole-body PBM delivered with a Joovv Elite System (6 LED panels; 660±10 nm red and 850±10 nm near-infrared; total panel area ≈12,193 cm²). Athlete stands ~20 cm from panels, wearing eye protection. Two exposures per session: 450 s anterior + 450 s posterior (total 15 min). Measured average irradiance ≈81.62 mW/cm² and energy density per region ≈25.71 J/cm² at 20 cm. Two sessions/week on non-consecutive days for 8 weeks, after routine training.
干预措施: Whole-Body Photobiomodulation (PBM) (Active PBM) (Radiation)
Sham PBM
Identical setup and schedule, but with therapeutic light disabled (placebo light only). Eye protection and blinding procedures identical to active PBM.
干预措施: Sham PBM (Radiation)
结局指标
主要结局
Delayed Onset Muscle Soreness (DOMS)
时间窗: Baseline (T1), weekly (T2, weeks 1-8), and end of week 8 (T3).
Pain intensity measured using the Numeric Rating Scale (NRS; 0-10 points; higher scores = worse pain) during a maximal voluntary knee-extension contraction in sitting. Pain location/extent captured with a standardized pain drawing (exploratory). Primary analysis uses NRS.
次要结局
- Knee Extensor Strength (Hand-Held Dynamometry)(Baseline (T1), weekly (T2, weeks 1-8), end of week 8 (T3))
- Squat Jump (SJ) Height(Baseline (T1), weekly (T2, weeks 1-8), end of week 8 (T3) Unit: cm)
- Countermovement Jump (CMJ) Height(Baseline (T1), weekly (T2, weeks 1-8), end of week 8 (T3))
研究者
Italo Amaral de Oliveira
MSc
Universidade Federal de Sao Carlos