24th Annual Student Research Conference
Comparison of EMG Activity in Four Selected Muscles When Performing Oscillatory Exercise with the Shake Weight® and with a Dumbbell
Michael J. Atkinson* and Coedy S. Walker
Dr. Michael Bird, Faculty Mentor
The purpose of this study was to compare muscle activity when using a Shake Weight® and a dumbbell. Eleven experienced lifters (ht=1.670.10 m, wt=68.1813.20 kg) completed a 10 second set of Shake Weight® repetitions and a frequency-matched set of dumbbell repetitions. Electromyographic (EMG) data was measured for the anterior deltoid, middle deltoid, lateral triceps head and long triceps head. EMG data was rectified and integrated and the total integrated activity for 10 repetitions represented muscle activation for each condition. EMG activity for each muscle was evaluated with a dependent t-test. Using the dumbbell created more activity in the lateral (p=0.03) and long heads of the triceps (p=0.02). No significant difference was found in anterior (p=0.82) and middle deltoids (p=0.33) between conditions. Though limitations exist, it seems the Shake Weight® use resulted in less activity in the primary muscles of the exercise and required similar activation levels in the stabilizing muscles.
Keywords: Shake Weight, Dumbbell, EMG, Oscillatory Exercise, Muscle Activity
Topic(s):Exercise Science
Presentation Type: Oral Paper
Session: 18-4
Location: VH 1010
Time: 10:15