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Standing Neurophysiological Assessment of Lower Extremity Muscles Post-Stroke
Published on: July 26, 2021
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Lower extremity muscle function of front row rugby union scrummaging
Mostafa Yaghoubi1, Sally D Lark1, Wyatt H Page2
1School of Sport Exercise and Nutrition, Massey University , Wellington , New Zealand.
Sports Biomechanics
|May 17, 2018
Summary
Professional rugby players exhibit superior muscle activation and synchronicity in scrums compared to amateurs. Live scrum training is crucial for replicating the demands of the game, enhancing player performance.
Area of Science:
- Sports Science
- Biomechanics
- Human Movement
Background:
- The front row of a rugby scrum requires uniform muscle action for optimal force transfer and performance.
- Understanding lower extremity muscle activation patterns is key to improving scrummaging technique.
Purpose of the Study:
- To investigate and compare lower extremity muscle activation patterns in professional and amateur rugby front row players.
- To analyze differences in muscle reaction time, amplitude changes, and synchronicity between live and machine scrums.
Main Methods:
- Electromyography (EMG) was used to record muscle activity in 75 male rugby prop players.
- EMG data was collected bilaterally on vastus lateralis, rectus femoris, and gastrocnemius muscles.
- Statistical analyses (ANOVA, cross-correlation) compared muscle activation between professional/amateur levels and live/machine scrum conditions.
Main Results:
- Professional players showed significantly greater rates of change in muscle amplitude compared to amateurs.
- Live scrums resulted in quicker muscle reaction times and greater muscle amplitude (vastus lateralis, gastrocnemius) than machine scrums.
- Professional players demonstrated more synchronized muscle activation than amateurs; all players showed greater synchronicity in machine scrums versus live scrums.
Conclusions:
- Professional rugby players exhibit higher skill proficiency and muscle synchronicity.
- Scrum machine training effectively strengthens muscles but does not fully replicate live scrum demands.
- Training should integrate live scrum situations to better prepare players for game conditions.
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