- 期刊
核心肌力對高中游泳選手200公尺混合式運動表現之影響
Effects of Core Muscle Strength on 200-m Individual Medley Performance in Senior High School Swimmers
摘要
目的：探討核心肌力對高中游泳選手200公尺混合式各泳姿運動表現之影響。方法：以10名高中混合式專項選手為研究對象，測驗分成三天共三階段，第一階段收取無核心運動介入降低核心肌力的200公尺混合式運動表現，包含各泳姿到達4.8、7.5與14.8公尺分段成績、總成績、跳水距離、划水頻率、轉身時間與蛙式下壓花費時間；第二階段在實驗室測試核心肌力並進行核心運動介入，同時記錄降低核心肌群50%的介入組數作為第三階段核心運動介入的依據；第三階段實驗先根據第二階段記錄的組數進行核心運動介入之後再收取200公尺混合式運動表現資料。運動表現使用6台高速攝影機，以取樣頻率120赫茲記錄。使用配對樣本t檢定比較核心肌力下降前後運動表現的差異並計算效果量。結果：仰式到達7.5公尺、14.8公尺之分段時間、蛙式頭部於最高點下壓至泳鏡入水之花費時間、跳水距離在核心肌力下降後表現顯著下降，其餘泳姿到達總時間、分段時間與轉身時間在核心肌力下降前後則無顯著差異。結論：雖然仰式到達7.5公尺、14.8公尺時間、蛙式下壓時間、跳水距離在核心肌力下降後有顯著影響，但可能由於身體代償作用導致整體測驗成績未受影響。
並列摘要
Purpose: To investigate the effects of core muscle strength on the 200-m individual medley (IM) performance of senior high school swimmers. Methods: The participants were 10 male senior high school swimmers, and the data were collected over 3 days. On the first day, we recorded the swimmers' 200-m IM performance (time required to swim 4.8, 7.5, and 14.8 m for each swimming style, overall 200-m time, flight distance at swimming start, stroke frequency, turnaround time, and time spent submerged during the breaststroke) prior to exercise intervention. On the second day, each participant's trunk strength was tested in a laboratory by using an isokinetic dynamometer. The amount of core exercise intervention needed to reduce the swimmers' trunk muscle strength by 50% was recorded for the third-day test. On the third day, each swimmer's post-intervention 200-m IM performance was recorded. Swimming performance was recorded at 120 Hz by using six high-speed cameras. Results: The swimmers' time required to swim 7.5 and 14.8 m for the backstroke, time spent submerged during the breaststroke, and flight distance at swimming start got worse after undergoing the core exercise intervention. The differences in the other parameters were nonsignificant. Conclusion: Although the swimmers' reduced core muscle strength affected their backstroke and breaststroke performance, their overall performance in the 200-m IM was not significantly affected, which could be due to their movement compensations.