Validity of the Myotest® in Measuring Force and Power Production in the Squat and Bench Press
Document Type
Article - Merrimack Access Only
Publication Title
Journal of Strength and Conditioning Research
Publisher
National Strength and Conditioning Association
Publication Date
8-2011
Abstract/ Summary
The purpose of this study was to verify the concurrent validity of a bar-mounted Myotest® instrument in measuring the force and power production in the squat and bench press exercises when compared to the gold standard of a computerized linear transducer and force platform system. Fifty-four men (bench press: 39-171 kg; squat: 75-221 kg) and 43 women (bench press: 18-80 kg; squat: 30-115 kg) (age range 18-30 years) performed a 1 repetition maximum (1RM) strength test in bench press and squat exercises. Power testing consisted of the jump squat and the bench throw at 30% of each subject's 1RM. During each measurement, both the Myotest® instrument and the Celesco linear transducer of the directly interfaced BMS system (Ballistic Measurement System [BMS] Innervations Inc, Fitness Technology force plate, Skye, South Australia, Australia) were mounted to the weight bar. A strong, positive correlation (r) between the Myotestand BMS systems and a high correlation of determination ([R.sup.2]) was demonstrated for bench throw force (r = 0.95, p < 0.05) ([R.sup.2] = 0.92); bench throw power (r = 0.96, p < 0.05) ([R.sup.2] = 0.93); squat jump force (r = 0.98, p < 0.05) ([R.sup.2] = 0.97); and squat jump power (r = 0.91, p < 0.05) ([R.sup.2] = 0.82). In conclusion, when fixed on the bar in the vertical axis, the Myotest is a valid field instrument for measuring force and power in commonly used exercise movements.
Repository Citation
Comstock, B. A.,
Solomon-Hill, G.,
Flanagan, S. D.,
Earp, J. E.,
Luk, H.,
Dobbins, K. A.,
Dunn-Lewis, C.,
Fragala, M. S.,
Ho, J.,
Hatfield, D. L.,
Vingren, J. L.,
Denegar, C. R.,
Volek, J. S.,
Kupchak, B. R.,
Maresh, C. M.,
&
Kraemer, W. J.
(2011). Validity of the Myotest® in Measuring Force and Power Production in the Squat and Bench Press. Journal of Strength and Conditioning Research, 25(8), 2293-2297.
Available at: https://scholarworks.merrimack.edu/health_facpubs/44