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The Acute Effects of Whole Body Vibration on Isometric Mid-Thigh Pull Performance

1
College of Physical Activity and Sport Sciences, West Virginia University, Morgantown, WV 26505, USA
2
Center of Excellence for Sport Science and Coach Education, East Tennessee State University, Johnson, TN 37604, USA
3
Human Performance Innovation Center, Rockefeller Neuroscience Institute, West Virginia University, Morgantown, WV 26505, USA
4
Department of Kinesiology, Coastal Carolina University, Conway, SC 29256, USA
5
School of Exercise, Biomedical and Health Sciences, Edith Cowan University, Edith Cowan 6027, Australia
*
Author to whom correspondence should be addressed.
Vibration 2020, 3(2), 85-98; https://doi.org/10.3390/vibration3020008
Received: 11 March 2020 / Revised: 15 April 2020 / Accepted: 20 April 2020 / Published: 22 April 2020
The purpose of the present investigation was to examine the acute effects of whole body vibration (WBV) on isometric mid-thigh pull force–time curve (FTC) characteristics. Eleven recreationally trained subjects were randomly assigned to three treatment conditions: sham no vibration protocol (T1), vibration protocol 30 Hz 2–4 mm amplitude (T2), and vibration protocol 30 Hz 2–4 mm (T3). After completing a standardized warm-up, the subject stood on a vibration platform with the knee at a 120° angle and performed one of the three interventions. Each treatment condition required the subject to stand on the platform for thirty-second treatments, each separated by thirty seconds of recovery. Five minutes after the completion of the treatment conditions, the subjects performed the isometric mid-thigh pull. All FTCs were analyzed with standardized procedures for peak force (PF) and peak rate of force development (PRFD). A 1 × 3 repeated measures analysis of variance (ANOVA) was used to compare the three treatments. Additionally, coefficients of variance (CV), as well as intraclass and interclass correlations, were performed. There were no significant differences (p > 0.05) for any of the FTC analyses performed in this investigation. The CV and the 95% confidence interval (CI) indicate that the WBV protocol resulted in trivial changes in PF and beneficial changes in PRFD. A 30 Hz 2–4 mm amplitude WBV does not result in a significant increase in isometric mid-thigh pull performance. View Full-Text
Keywords: force–time curve; rate of force development; peak force; strength force–time curve; rate of force development; peak force; strength
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Hornsby, W.G.; South, M.A.; Stone, J.D.; Lamont, H.S.; Haff, G.G.; Stone, M.H. The Acute Effects of Whole Body Vibration on Isometric Mid-Thigh Pull Performance. Vibration 2020, 3, 85-98.

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