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. 2023 Feb 23;20(5):3947. doi: 10.3390/ijerph20053947

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© 2023 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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MVIC knee extensor torque, Root Mean Square and neuromuscular efficiency of the quadriceps femoris constituents according to hip and knee angles during contraction. (A) MVIC knee extensor torque (N.m) (left y-axis) and different conditions (right x-axis). (B) Root Mean Square of quadriceps femoris (µV) (left y-axis) and different conditions (right x-axis). (C) Neuromuscular efficiency of the quadriceps femoris (%) (left y-axis) and different conditions (right x-axis). Data are presented as geometric means and confidence intervals (CI 95%). Legend: MVIC: Maximal Voluntary Isometric Contraction; RMS: Root Mean Square; QF: Quadriceps femoris; SUP60: supine with 60° of knee flexion; SIT60: seated with 60° of knee flexion; SUP20: supine with 20° of knee flexion; SIT20: seated with 20° of knee flexion. Significant differences: ^a different from SUP60 at (p ≤ 0.05). ^b different from SIT60 at (p ≤ 0.05).