Faculty of Sports Sciences and Health, Shahid Beheshti University, Tehran, Iran.
Department of Sport Injuries and Corrective Exercises, Sport Sciences Research Institute, Tehran, Iran.
Res Sports Med. 2022 Mar-Apr;30(2):203-214. doi: 10.1080/15438627.2020.1860050. Epub 2020 Dec 17.
The purpose of this study was to examine the effects of an eight-week 11 + S programme on isokinetic shoulder strength in young male volleyball players. Twenty-eight top-level young male volleyball players were recruited for this study. The players were randomly assigned into intervention (14 players) and control (14 players) groups. The intervention group performed the 11 + S as a warm-up before training at least three times a week for eight weeks. Dominant shoulder strength was measured using an isokinetic dynamometer at 60°/s and 180°/s. The functional deceleration ratio (FDR) was calculated as a functional strength profile. 20% FDR improvement after eight weeks of 11 + S at 180°/s ( = 0.003) were observed. No other statistically significant effects for shoulder strength improvement was observed ( > 0.05). Eight weeks of 11 + S warm-up programme improved the glenohumeral muscle imbalance by increasing the functional deceleration ratio (FDR) of shoulder muscles in young male volleyball players.
本研究旨在探讨为期八周的 11+S 方案对年轻男性排球运动员等速肩部力量的影响。本研究招募了 28 名顶级年轻男性排球运动员。运动员被随机分为干预组（14 名运动员）和对照组（14 名运动员）。干预组在每周至少进行三次训练前，将 11+S 作为热身运动，共进行八周。使用等速测力仪在 60°/s 和 180°/s 的角速度下测量优势肩力量。功能减速比（FDR）作为功能力量曲线计算。八周的 11+S 后，在 180°/s 时，FDR 提高了 20%（=0.003）。未观察到其他肩部力量改善的统计学显著效果（>0.05）。八周的 11+S 热身方案通过增加肩部肌肉的功能减速比（FDR），改善了年轻男性排球运动员的盂肱关节肌肉失衡。
