Honors College Thesis
 

The Effects of Exhaustive Exercise on ACL Injury Risk

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https://ir.library.oregonstate.edu/concern/honors_college_theses/v405sc51j

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  • Background: Certain knee movements place the anterior cruciate ligament (ACL) at risk of injury. These injuries commonly affect athletes especially at the end of events. The purpose of this study was to determine the effects of exhaustive exercise on frontal plane hip and knee mechanics during two tasks in order to better understand the risk factors for ACL injury. Methods: Forty, healthy, active female subjects performed drop jump landings (DJ) and side-step cut landings (SSC) before and after a 30-minute bout of exercise. The following frontal plane dependent variables were collected during the tasks: maximum hip and knee moments, angle at initial contact, maximum angle prior to maximum knee flexion, and overall displacement. For each dependent variable a 2 (task) x 2 (time) repeated measures ANOVA was performed. Results: There were no significant interactions or main effects for time, but there was a significant main effect for task for hip angle at initial contact (p=0.006), hip angle displacement (p=0.032), and hip abduction moment (p<0.001). Conclusion: The subjects did not have changes in frontal plane mechanics in response to the exercise. The SSC had greater hip abduction at initial contact, abduction moments, and overall adduction than the DJ. Key Words: ACL, fatigue, biomechanics, knee abduction
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file details AsplundChristopherD2016.pdf 2017-07-29 Público Descargar