Optimal Combinations of Isometric Normalization Tests for the Production of Maximum Voluntary Activation of the Shoulder Muscles

Archives of Physical Medicine and Rehabilitation
Fabien Dal MasoMickaël Begon

Abstract

To identify the smallest combinations of maximum voluntary isometric contraction (MVIC) tests that produce near-maximum voluntary activation (MVA) for a large proportion of participants for the shoulder girdle muscles. Cross-sectional study. Research center. Healthy participants (N=38). Not applicable. The electromyography of 12 shoulder muscles was recorded while participants performed 15 MVIC tests. The smallest combinations of MVIC tests that met our acceptance criterion (ie, produce 90% of MVA for 90% of participants) were identified. Optimal combinations were identified for each of the 12 muscles individually and for the 12 muscles simultaneously. Electromyographic activation levels of the 95th highest percentile obtained with our optimal combinations and with the Four Normalization Tests previously recommended were compared using paired t tests. Between 2 and 6 MVIC tests were required for each of the 12 muscles, and 12 MVIC tests were required for the 12 muscles to meet the acceptance criterion. These optimal combinations produced electromyographic activation levels of the 95th highest percentile comprised between 97% and 100% of MVA. These electromyographic activation levels were significantly higher than the electromyo...Continue Reading

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Citations

Dec 16, 2017·PloS One·Yoann BlacheFabien Dal Maso
Jul 4, 2019·Medicine and Science in Sports and Exercise·Benoit GilletMickaël Begon
Aug 18, 2020·European Journal of Applied Physiology·Nicolas A TurpinMickael Begon
Sep 6, 2020·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·Valentin DegraveMickaël Begon
Jul 31, 2021·Journal of Biomechanics·Najoua AssilaMickaël Begon
Dec 14, 2021·Frontiers in Bioengineering and Biotechnology·Jason B FiceJohan Davidsson

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