Publication Date


Document Type


First Advisor

Hill, Christopher M.

Degree Name

M.S. (Master of Science)

Legacy Department

Department of Kinesiology and Physical Education (KNPE)


The clean is a primary movement in the sport of Olympic weightlifting. Management of fatigue is essential to optimizing weightlifting performance. The purpose of this study was to examine the effects of fatigue on EMG activation during clean performance in elite female weightlifters. Electromyography (EMG) data was collected bilaterally from the vastus lateralis (VM) and vastus lateralis (VL) during maximum voluntary isometric contraction (MVIC) and clean trials. Muscle activity was collected during pre- and post-fatigue clean trials at 60%, 70%, and 80% of the subject’s self-reported one repetition maximum (1RM). Subjects completed a fatiguing protocol consisting of two sets of front squats until failure at 80% 1RM. The results showed a significant decrease in EMG activation between 70% and 80% 1RM for the left VL. We found no significant differences between pre- and post-fatigue EMG activity across the measured muscles. This study provides information regarding the fatigue resistance of elite female weightlifters.


37 pages




Northern Illinois University

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