mba論文排球運動員上舉揮臂動作模式下肩部功能障礙的特征和動力學機制pdf

1、排球運動員上舉揮臂動作模式下肩部功能障礙的特征和動力學機制論文隨機驗證編號：BT61901824076IV 摘要 摘要 目的：肩傷是排球最常見損傷之一，扣球、攔網、跳發(fā)等無一不用到肩部，肩部功能障礙會嚴重影響運動員技戰(zhàn)術的發(fā)揮。本研究以排球運動員肩部功能障礙為切入點，結合形態(tài)、肌力、關節(jié)活動度、本體感覺、揮臂速度、扭轉角度等測試，觀察肩部功能障礙的特征并分析其動力學機制，找出弱鏈環(huán)節(jié)，為運動員科學訓練及康復治療提供參考依據，為肩部損傷的

2、預防提出建議。 方法：本研究選取 21 名排球專項運動員，經檢查確診分為正常組和障礙組，利用皮尺、數字化肌力測試儀、傾角儀、多關節(jié)運動控制系統(tǒng)進行肩部形態(tài)、肌力、活動度、本體感覺等測試，通過表面肌電、BTE 模擬仿真測試系統(tǒng)、紅外高速攝像測試發(fā)力順序、揮臂擊球的力量、速度、角度等指標，分析肩部功能障礙的特征和動力學機制。 結果： 1. 肩胛骨不對稱， 健側距離脊柱近， 患側距離遠， 肩胛下角不在同一水平線上，胸鎖關節(jié)不在同一平面內； 2

3、. 障礙組患側肩關節(jié)主動伸、外展、內旋、水平內收、水平外展活動度顯著小于正常組； 3. 障礙組患側肩關節(jié)肌力明顯低于正常組，抗疲勞時間明顯短于正常組，靜力力量練習疲勞后肩關節(jié)本體感覺低于正常組； 4. 模擬揮臂扣球，障礙組跪位最大力量顯著小于正常組； 5. 等長力量障礙組小于正常組，障礙組右手屈、外展、內旋、水平內收顯著小于正常組； 6. 障礙組肩關節(jié)拮抗肌離心收縮/主動肌向心收縮比例低于正常組； 7. 障礙組肩胛骨上回旋幅度小且滯后

4、，無內收預拉長，動作環(huán)節(jié)少，正常組揮臂扣球時兩度上回旋肩胛骨，通過內收預拉長和內收夾臂提高動作幅度及效率；8. 障礙組拉臂幅度小于正常組，擊球時肩關節(jié)角小于正常組，擊球速度、平均加速度顯著小于正常組； 9. 肩髖扭轉角與關節(jié)速度和肩關節(jié)角具有中高度相關性。 結論： 1. 肩部功能障礙者肩胛骨位置和運動改變，容易引起撞擊； 排球運動員上舉揮臂動作模式下肩部功能障礙的特征和動力學機制論文隨機驗證編號：BT61901824076VI ABST

5、RACT Objective: Shoulder is one of the most common injury joints of volleyball, in volleyball games, there are lots of movements using shoulder, such as: spiking, blocking, and jumping etc. Shoulder dysfunctio

6、n seriously affects athletes both in technology and tactics. This study take volleyball players shoulder dysfunction as a starting point, investigates the impact of technology due to the shoulder dysfunction, observes

7、 the characteristics of shoulder dysfunction and analyzes the dynamics of the mechanism combined form strength, range of motion, proprioception, stability, arm swing speed and torsion angle etc. In this way,

8、the study identify the weak chain and provide reference for athletes about scientific training & rehabilitation as well as make recommendations for the prevention of shoulder injury. Methods: This study sel

9、ects 21 specialized volleyball players who are divided into two groups: normal group and dysfunction group after diagnosed by hospital, after that, they take both characterization testing including strength test, range o

10、f motion, stability test and mechanical testing including force test, strength test, speed test, spike angle test. The characteristic of shoulder dysfunction are summarized, and then analyze dynamic mechanism o

11、f shoulder dysfunction. Results: 1 Scapula asymmetry which the uninvolved side nearer than the involved side, and the flexibility of normal group is more flexible than dysfunction group. 2 The involved shoulder active

12、range of extension,abduction,internal rotation,horizontal adduction,horizontal abduction motion in normal group is significantly greater than dysfunction group. 3 The involved shoulder muscle strength in normal grou