Document Detail

Validity of the Myotest® in Measuring Force and Power Production in the Squat and Bench Press.
MedLine Citation:
PMID:  21747293     Owner:  NLM     Status:  Publisher    
Comstock, BA, Solomon-Hill, G, Flanagan, SD, Earp, JE, Luk, H-Y, Dobbins, KA, Dunn-Lewis, C, Fragala, MS, Ho, J-Y, Hatfield, DL, Vingren, JL, Denegar, CR, Volek, JS, Kupchak, BR, Maresh, CR, and Kraemer, WJ. Validity of the myotest® in measuring force and power production in the squat and bench press. J Strength Cond Res 25(X): 000-000, 2011-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 Myotest and BMS systems and a high correlation of determination (R) was demonstrated for bench throw force (r = 0.95, p < 0.05) (R = 0.92); bench throw power (r = 0.96, p < 0.05) (R = 0.93); squat jump force (r = 0.98, p < 0.05) (R = 0.97); and squat jump power (r = 0.91, p < 0.05) (R = 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.
Brett A Comstock; Glenn Solomon-Hill; Shawn D Flanagan; Jacob E Earp; Hui-Ying Luk; Kathryn A Dobbins; Courtenay Dunn-Lewis; Maren S Fragala; Jen-Yu Ho; Disa L Hatfield; Jakob L Vingren; Craig R Denegar; Jeff S Volek; Brian R Kupchak; Carl M Maresh; William J Kraemer
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-7-08
Journal Detail:
Title:  Journal of strength and conditioning research / National Strength & Conditioning Association     Volume:  -     ISSN:  1533-4287     ISO Abbreviation:  -     Publication Date:  2011 Jul 
Date Detail:
Created Date:  2011-7-12     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9415084     Medline TA:  J Strength Cond Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
1Human Performance Laboratory, Department of Kinesiology, University of Connecticut, Storrs, Connecticut; 2Department of Exercise Sciences and Sport Studies, Springfield College, Springfield, Massachusetts; 3Division of Geriatric Medicine, Center for Aging, University of Connecticut Health Center, Farmington, Connecticut; 4Department of Kinesiology, University of Rhode Island, Kingston, Rhode Island; and 5Department of Kinesiology, Health Promotion and Recreation, University of North Texas, Denton, Texas.
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