The Effect Of Plyometric Training on Shoulder External Rotation Strength
Cardiff Metropolitan University
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Objective: Overhead athletes endure high amounts of stress on the shoulder complex, resulting in increased risk of an injury probability. This increased injury probability is commonly due to muscle imbalances between internal and external rotation, with external rotation being weaker than desired in most cases. Upper limb plyometric training is commonly used as a training method in overhead athletes. But there is little literature on its effects to external rotation. This study will determine what effects plyometric training has on external rotation peak torque. Method: 14 male Cardiff metropolitan students volunteered to take part in this study. A isometric dynamometer was used to measure shoulder external rotation peak torque (60°/s and 120°/s speeds), pre and post a four week plyometric training intervention. Half of the participants took part in the intervention whilst the other half was used as a control group. Similarities or differences from pre to post test will be made clear when analysed using a two way ANOVA with significance at (p<.05) Results: 60°/s intervention group, found significance from pre to post test on their dominant hand (P<0.00). There was no significance found in any of the group’s pre to post test data in either of the speeds. Conclusion: The results of the study suggest that there is no significant difference between upper limb plyometric training and external rotation peak torque strength. As no significance is apparent, further studies need to look at alternative training methods to improve external rotation strength. Furthermore researchers can look into specific benefits upper limb plyometric training has on overhead athletes.
DEGREE OF BACHERLOR OF SCIENCE (HONOURS) SPORTS CONDITIONING, REHABILITATION AND MASSAGE
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