Effect of knee angle on neuromuscular assessment of plantar flexor muscles: A reliability study

Angèle N Merlet, Thomas Cattagni, Christophe Cornu and Marc Jubeau

PLOS ONE, 2018, vol. 13, issue 3, 1-16

Abstract: Introduction: This study aimed to determine the intra- and inter-session reliability of neuromuscular assessment of plantar flexor (PF) muscles at three knee angles. Methods: Twelve young adults were tested for three knee angles (90°, 30° and 0°) and at three time points separated by 1 hour (intra-session) and 7 days (inter-session). Electrical (H reflex, M wave) and mechanical (evoked and maximal voluntary torque, activation level) parameters were measured on the PF muscles. Intraclass correlation coefficients (ICC) and coefficients of variation were calculated to determine intra- and inter-session reliability. Results: The mechanical measurements presented excellent (ICC>0.75) intra- and inter-session reliabilities regardless of the knee angle considered. The reliability of electrical measurements was better for the 90° knee angle compared to the 0° and 30° angles. Conclusions: Changes in the knee angle may influence the reliability of neuromuscular assessments, which indicates the importance of considering the knee angle to collect consistent outcomes on the PF muscles.

Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0195220

DOI: 10.1371/journal.pone.0195220

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