-
精確檢索 : 冠狀病毒
-
模糊檢索 : 冠狀病毒
-
冠狀病毒感染冠狀病毒疾病
-
查詢出版品: 冠狀病毒
Read this ↓
- Journals
速度流失閾值與肌肉收縮模式對臥推訓練的影響
Effect of Velocity Loss Threshold and Muscle Contraction Patterns on Bench Press Training
Abstracts
本研究探討不同肌肉收縮模式在臥推訓練的效果，過去研究多集中於單關節動作的向心與離心收縮，較少對多關節動作進行離心訓練，且結合速度流失（velocity loss, VL）閾值來監控阻力訓練成效的研究有限。因此，本研究目的在比較向心、離心及向心加離心臥推訓練對上肢肌力、肌耐力、肌肉圍度與握力的影響。研究對象為具有一年以上重量訓練經驗的成年男性，共40人，隨機分為四組：向心收縮組、離心收縮組、向心加離心收縮組與控制組，進行五週每週兩次的臥推訓練，握距約為1.5倍肩寬，訓練強度從70%一次反覆最大肌力（one-repetition maximum, 1RM）逐漸提升至90% 1RM，訓練週期前半段與後半段VL由25%減至15%，訓練速度皆為2秒。訓練前後進行身體組成分析、胸大肌肌肉圍度、握力測試、最大肌力（1RM）及肌耐力（50% 1RM至力竭）測試。研究結果顯示：各組在身體組成、肌肉圍度、握力及最大肌力測試中未達顯著差異，但在肌耐力測驗中，僅離心收縮組的臥推反覆次數有顯著提升。本研究結論發現五週之中高強度臥推訓練結合VL進行疲勞監控，離心收縮組能提升臥推肌耐力表現，因此，可提供教練或運動員不同的訓練方式，在較高強度的訓練中也能提升上肢肌耐力表現。
Parallel abstracts
This study investigated the effects of different muscle contraction modes on bench press training. Most studies have focused on concentric contraction and eccentric contraction for single-session movements, but fewer studies have focused on eccentric contraction training for multi-segment movements, and there are limited studies that utilize the combined velocity loss (VL) method to monitor the effectiveness of resistance training. Therefore, the purpose of this study was to compare the effects of concentric contraction, eccentric contraction, and concentric and eccentric contraction bench press training on upper extremity strength, endurance, muscle girth, and grip strength. A total of 40 adult males with at least one year of weight training experience were randomly divided into four groups: concentric contraction, eccentric contraction, concentric and eccentric contraction, and control group. Each underwent a five-week, twice-weekly bench press regimen with a grip spacing of 1.5 times the width of the shoulder. The intensity of the workout was gradually increased from 70% of 1RM (one-repetition maximum) to 90% of 1RM, and the VL was reduced from 25% to 15% between the first and second half of the training cycle, all with a training speed of 2 seconds. Body composition analysis, pectoralis major muscle circumference, grip strength test, maximal muscle strength (1RM), and muscular endurance (50% 1RM to failure) were performed before and after training. The results showed no significant differences between groups in body composition, muscle girth, grip strength, and maximal muscle strength tests, but only the eccentric contraction group showed a significant increase in the number of repetitions of the bench press in the muscular endurance test. This study concludes that the eccentric contraction group improves bench press endurance performance when fatigue is monitored in conjunction with VL during a five-week, high-intensity bench press training program, thus providing coaches or athletes with a different training method to improve upper extremity endurance performance even at higher intensities.