Author : Daniel Schaefer (Ph.D.)
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (138 download)
Book Synopsis Determinants of Countermovement Jump Performance in Division 1 Collegiate Athletes by : Daniel Schaefer (Ph.D.)
Download or read book Determinants of Countermovement Jump Performance in Division 1 Collegiate Athletes written by Daniel Schaefer (Ph.D.) and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Power output and body composition analysis are performance parameters used to evaluate the status of the Division 1 collegiate athlete. These metrics can serve both as an indicator of current performance or as an evaluation diagnostic after an injury. The purpose of this dissertation is to explain the variation seen in power output from a commonly used lower body test such as the countermovement jump (CMJ) and if fat free mass (FFM) from body composition testing can explain for differences observed in power output in the CMJ amongst Division 1 collegiate athletes. Additionally, this dissertation will explore how power and FFM change from a healthy pre-injury state to post-injury after receiving anterior cruciate ligament reconstruction (ACLR) surgery in the Division 1 collegiate population. Studies 1 and 2 analyzed CMJ data of 290 Division 1 collegiate athletes (165 male). Study1 revealed that age, sex, body mass and peak power explained 87% of the variation observed in CMJ jump height performance. Study 2, in addition to power from the CMJ test, utilized FFM body composition data via total body scans from Dual-Energy X-Ray Absorptiometry. The data from study 2 showed that 81% of the variation seen in power could be predicted by age, sex and fat free mass. Study 3 evaluated healthy, preinjury data in 18 Division 1 collegiate athletes (10 male) and compared power and FFM differences 6 months following ACLR. This study revealed significant power and FFM asymmetries following ACLR at the 6-month testing timepoint.