Motion and Electromyographic Analysis of the Forehand Topspin Against Topspin, Forehand Topspin Against Backspin, Forehand Stroke, and Forehand Attack in Elite Table Tennis Players
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 入组人数
- 40
- 试验地点
- 1
- 主要终点
- Trunk muscles activation during forehand topspin against topspin, forehand topspin against backspin, forehand stroke, and forehand attack
研究概览
简要总结
This research will analyze and compare the muscle activation levels, muscle recruitment timing, trunk kinematics, and shoulder joint kinematics between the four forehand strokes and between elite table tennis players with and without shoulder injuries, providing insights for daily training and rehabilitation programs to reduce the occurrence of sports injuries.
详细描述
The study participants will be elite table tennis players aged between 13 and 40. Participants must have competed in the Chinese Taipei Table Tennis Ranking Tournament or the National Table Tennis Championships within the past three years and have at least four years of table tennis experience, and train for more than 10 hours per week.
The study involves four types of forehand strokes: forehand topspin against topspin, forehand topspin against backspin, forehand stroke, and forehand attack.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Cross Sectional
入排标准
- 年龄范围
- 13 Years 至 40 Years（Child, Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •The ages range from 13 to 40 years old
- •Competed in the Chinese Taipei Table Tennis Ranking Tournament or the National Table Tennis Championships within the past three years
- •At least four years of table tennis experience, and train for more than 10 hours per week
排除标准
- •History of upper limb surgery or fracture
- •History of shoulder dislocation
- •History of spine injury in the last year
- •Systemic autoimmune disease or cancer
- •Pregnancy
- •Any neurological complications
研究组 & 干预措施
table tennis players (healthy group)
elite table tennis players without shoulder pain
干预措施: motion capture system, surface electromyography (Device)
table tennis players (shoulder pain group)
elite table tennis players with shoulder pain
干预措施: motion capture system, surface electromyography (Device)
结局指标
主要结局
Trunk muscles activation during forehand topspin against topspin, forehand topspin against backspin, forehand stroke, and forehand attack
时间窗: Immediately during the experiment
The root mean square of electromyography (EMG) data of bilateral erector spinae and bilateral abdominal external oblique will be normalized by the maximum voluntary contraction amplitude (percentage of maximal voluntary contraction, %)
Trunk kinematics during forehand topspin against topspin, forehand topspin against backspin, forehand stroke, and forehand attack
时间窗: Immediately during the experiment
Trunk kinematics, including flexion, extension, lateral flexion and rotation, were measured in degrees (°) across four conditions: forehand topspin against topspin, forehand topspin against backspin, forehand stroke, and forehand attack.
Upper limbs muscles activation during forehand topspin against topspin, forehand topspin against backspin, forehand stroke, and forehand attack
时间窗: Immediately during the experiment
The root mean square of electromyography (EMG) data of the biceps brachii, triceps brachii, anterior deltoid, and pectoralis Major will be normalized by the maximum voluntary contraction amplitude (percentage of maximal voluntary contraction, %) and calculated over forehand topspin against topspin, forehand topspin against backspin, forehand stroke, and forehand attack.
次要结局
- Trunk muscle strength(Immediately during the experiment)
- Shoulder muscle strength(Immediately during the experiment)
- Trunk motor control(Immediately during the experiment)
- Trunk mobility(Immediately during the experiment)
- Shoulder mobility(Immediately during the experiment)
- Shoulder motor control(Immediately during the experiment)
- Shoulder kinematics during forehand topspin against topspin, forehand topspin against backspin, forehand stroke, and forehand attack(Immediately during the experiment)
研究者
Yin-Liang Lin
Associate Professor
National Yang Ming Chiao Tung University