Effect of Low-Intensity Technical Tethered Swimming Training on Front Crawl Kinematics in Adolescent Swimmers
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 32
- 试验地点
- 1
- 主要终点
- Front Crawl Kinematic Variables Measured by Accelerometer
研究概览
简要总结
This study evaluated the acute effects of two low-intensity front crawl training conditions on swimming kinematics in adolescent swimmers. After a standardized warm-up, participants performed either low-intensity tethered front crawl or low-intensity free-swimming front crawl. Kinematic measurements were obtained immediately after task completion using an accelerometer. One week later, the final exercise condition was rotated between groups so that both groups completed both training conditions.
详细描述
This study investigated the effects of two low-intensity front crawl training conditions on swimming kinematics in adolescent swimmers. All participants completed the same standardized warm-up protocol. After the warm-up, Group A performed 6 × 10 cycles of low-intensity tethered front crawl with 10-second rest intervals between sets, while Group B performed 6 × 50 m of low-intensity front crawl starting every 60 seconds. During both exercise conditions, participants were instructed to focus on stroke length and correct body position in the water.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Basic Science
- 盲法
- None
入排标准
- 年龄范围
- 12 Years 至 14 Years（Child）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Competitive adolescent swimmers from a local sports club
- •Regular swimming training history since approximately 9-10 years of age
- •Current training frequency of approximately 7-8 sessions per week
- •Regular participation in national-level swimming competitions
- •At least 2 years of regular swimming training experience
- •Ability to complete the study procedures, including low-intensity front crawl conditions and accelerometer-based measurement
排除标准
- •Current injury or musculoskeletal condition preventing participation
- •Failure to meet the required age criteria
- •Less than 2 years of regular swimming training experience
- •Inability to complete the study procedures
研究组 & 干预措施
Sequence A
Participants completed low-intensity tethered front crawl in the first session and low-intensity free front crawl in the second session, one week later.
干预措施: Low-Intensity Tethered Front Crawl Swimming (Behavioral)
Sequence A
Participants completed low-intensity tethered front crawl in the first session and low-intensity free front crawl in the second session, one week later.
干预措施: Low-Intensity Free Front Crawl Swimming (Behavioral)
Sequence B
Participants completed low-intensity free front crawl in the first session and low-intensity tethered front crawl in the second session, one week later.
干预措施: Low-Intensity Tethered Front Crawl Swimming (Behavioral)
Sequence B
Participants completed low-intensity free front crawl in the first session and low-intensity tethered front crawl in the second session, one week later.
干预措施: Low-Intensity Free Front Crawl Swimming (Behavioral)
结局指标
主要结局
Front Crawl Kinematic Variables Measured by Accelerometer
时间窗: Baseline and 1 week
ront crawl kinematic variables were assessed with an accelerometer during each 50 m front crawl trial performed after the assigned exercise condition. Variables included body roll (maximum angular velocity around the vertical axis \[ωmaxR\] and maximum pelvic tilt angle around the vertical axis \[AmaxR\]), yaw rotation (maximum angular velocity around the sagittal axis \[ωmaxY\] and acceleration along the transverse axis \[atmax\]), pitch rotation (maximum angular velocity around the transverse axis \[ωmaxP\] and acceleration along the sagittal axis \[asmax\]), and progressive movement (maximum acceleration along the vertical axis \[avmax\]).
次要结局
- Time to Achieve 50 m(Baseline and 1 week)
- Stroke Length(Baseline and 1 week)