Author

Conatser

Date of Award

6-1995

Degree Name

Master of Arts

Department

Human Performance and Health Education

Department

Health, Physical Education & Recreation

First Advisor

Dr. Roger Zabik

Second Advisor

Dr. Mary Dawson

Third Advisor

Dr. Patricia Frye

Access Setting

Masters Thesis-Open Access

Abstract

The purpose of this investigation was to compare temporal data during the phases of jumping. Eight NCAA, Di vision I football players completed four jumps: three depth jumps from heights of 0.15 m, 0.30 m, and 0.46 m, and a standing vertical jump. Subjects were grouped according to height jumped. The dependent variables were phase time, amortization time, and time to peak EMG. Surface EMG synchronized with high speed video was used to analyze the response of six muscles used in the jumping movement. Findings indicated that subjects who consistently jumped higher spent more time in each phase of the jumping movement. Jumpers spent the most time in the eccentric phase and the least time in the amortization phase. The high jump group had a longer amortization time than subjects in the low jump group. Time to peak EMG indicated a distinct proximal to distal recruitment pattern.

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