The effect of 8 weeks of TRX exercises on Y-Balance tests in overhead athlete
Poster Presentation XML
Authors
1faculty of sport science
2Shahid Bahonar University of Kerman
3دانشگاه علامه طبا طبایی
Abstract
Introduction: Upper extremity injuries are one of the most common injuries in overhead athletes. Screening tools developed to predict injury in various athletic populations, like the Y-balance test (YBT), are increasing in popularity. There are various training methods for injury prevention, one of the newest methods being TRX exercises. This exercises are type of close kinetic chain (CKC) exercise. CKC exercise cause increased shoulder stability and proprioception.
Methodology: In this research, 25 overhead athletes (age:25.60±3.12, height:183.04±5.73, weight:81.24±4.93) were selected with no history of upper extremity injuries as the statistical sample. We measured the upper quarter limb length (LL) of each athlete standing with feet together, shoulders in a 90º abducted position, the elbows extended, and wrists and hands in neutral. A cloth tape measure was used to determine the distance in centimeters from the spinous process of the seventh cervical vertebrae to the tip of the right middle finger. Each reach distance was measured to the nearest 0.5-cm increment. The maximum score for each reach direction was then used for calculations to represent the end range of each athlete’s performance. To compare the reach distance, the maximum score was normalized to the individual’s limb length (calculated as the percentage of limb length). Y-Balance test was performed before exercises, then the test was repeated after 8 weeks of training
Results: Findings of K-S showed no significant different (p>0.05) and result pair t-test showed significant different (p<0.05) between pre-test and post-test upper quarter Y balance test in direction medial, inferolateral and superolateral.
Discussion: Because TRX exercises are CKC and suspended, increase muscle activity and ultimately improve joint stability. Genevois et al indicated 6-week sling-based training improving shoulder-rotator muscle strength. therefore, according to the results of the study, TRX exercises have improved distance in three direction of the Y balance test, and these exercises can be advised as preventive exercises for coaches.
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