Validity of the myotest® in measuring force and power production in the squat and bench press

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

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

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(8): 2293-2297, 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 2) was demonstrated for bench throw force (r = 0.95, p < 0.05) (R 2 = 0.92); bench throw power (r = 0.96, p < 0.05) (R 2 = 0.93); squat jump force (r = 0.98, p < 0.05) (R 2 = 0.97); and squat jump power (r = 0.91, p < 0.05) (R 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.

Original languageEnglish
Pages (from-to)2293-2297
Number of pages5
JournalJournal of Strength and Conditioning Research
Volume25
Issue number8
DOIs
Publication statusPublished - 2011 Aug 1

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Exercise
Transducers
South Australia
Technology
Weights and Measures

Keywords

  • Concurrent validity
  • Construct validity
  • Power testing
  • Strength testing
  • Technology
  • Testing reliability

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation

Cite this

Comstock, B. A., Solomon-Hill, G., Flanagan, S. D., Earp, J. E., Luk, H. Y., Dobbins, K. A., ... 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. https://doi.org/10.1519/JSC.0b013e318200b78c

Validity of the myotest® in measuring force and power production in the squat and bench press. / Comstock, Brett A.; Solomon-Hill, Glenn; Flanagan, Shawn D.; Earp, Jacob E.; Luk, Hui Ying; Dobbins, Kathryn A.; Dunn-Lewis, Courtenay; Fragala, Maren S.; Ho, Jen-Yu; Hatfield, Disa L.; Vingren, Jakob L.; Denegar, Craig R.; Volek, Jeff S.; Kupchak, Brian R.; Maresh, Carl M.; Kraemer, William J.

In: Journal of Strength and Conditioning Research, Vol. 25, No. 8, 01.08.2011, p. 2293-2297.

Research output: Contribution to journalArticle

Comstock, BA, Solomon-Hill, G, Flanagan, SD, Earp, JE, Luk, HY, Dobbins, KA, Dunn-Lewis, C, Fragala, MS, Ho, J-Y, Hatfield, DL, Vingren, JL, Denegar, CR, Volek, JS, Kupchak, BR, Maresh, CM & Kraemer, WJ 2011, 'Validity of the myotest® in measuring force and power production in the squat and bench press', Journal of Strength and Conditioning Research, vol. 25, no. 8, pp. 2293-2297. https://doi.org/10.1519/JSC.0b013e318200b78c
Comstock, Brett A. ; Solomon-Hill, Glenn ; Flanagan, Shawn D. ; Earp, Jacob E. ; Luk, Hui Ying ; Dobbins, Kathryn A. ; Dunn-Lewis, Courtenay ; Fragala, Maren S. ; Ho, Jen-Yu ; Hatfield, Disa L. ; Vingren, Jakob L. ; Denegar, Craig R. ; Volek, Jeff S. ; Kupchak, Brian R. ; Maresh, Carl M. ; Kraemer, William J. / Validity of the myotest® in measuring force and power production in the squat and bench press. In: Journal of Strength and Conditioning Research. 2011 ; Vol. 25, No. 8. pp. 2293-2297.
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AU - Luk, Hui Ying

AU - Dobbins, Kathryn A.

AU - Dunn-Lewis, Courtenay

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AU - Hatfield, Disa L.

AU - Vingren, Jakob L.

AU - Denegar, Craig R.

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AU - Maresh, Carl M.

AU - Kraemer, William J.

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KW - Technology

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