Skip to main content
Top
Published in: European Journal of Applied Physiology 10/2020

01-10-2020 | Original Article

Sex differences in neuromuscular control of quadriceps

Authors: Yi-Ling Peng, Anthony E. Johnson, Lisa Griffin

Published in: European Journal of Applied Physiology | Issue 10/2020

Login to get access

Abstract

Purpose

Patellofemoral pain syndrome (PFPS) is twice as prevalent in females as males, yet a few studies have evaluated differences in quadriceps muscle control between sexes or across force levels. This study investigated sex differences in quadriceps EMG onset times and amplitude at different force levels during isometric knee extension in asymptomatic males and females and in females with PFPS.

Methods

Thirteen healthy males, 12 healthy females, and 10 females with PFPS performed isometric knee extension ramp contractions at 25%, 50%, and 75% of maximal voluntary contraction (MVC). Surface EMG was recorded from the vastus lateralis (VL), vastus medialis oblique (VMO), vastus medialis (VM), and rectus femoris (RF).

Results

Healthy females showed delayed VL (222 ± 67 ms, p = 0.002), VMO (357 ± 101 ms, p = 0.001), and VM (258 ± 62 ms, p < 0.001) recruitment in comparison with healthy males. Healthy males activated the VL earlier than the VM (156 ± 51 ms, p = 0.02) and RF (379 ± 74 ms, p < 0.001), and at a similar time as the VMO; healthy females activated the VL earlier than the VM (192 ± 53 ms, p = 0.004) and VMO (239 ± 73 ms, p = 0.01). A lower VMO:VL activation ratio was found at 25% MVC (p < 0.001) than at higher force levels.

Conclusions

Delayed activation of the VMO relative to the VL has been proposed as a risk factor for PFPS. This study confirms a delay in VMO onset time in females.
Literature
go back to reference IBM Corp (2017) IBM SPSS Statistics for Windows, Version 25.0. Armonk, NY: IBM Corp. Released 2017. IBM Corp (2017) IBM SPSS Statistics for Windows, Version 25.0. Armonk, NY: IBM Corp. Released 2017.
go back to reference Miller AE, MacDougall JD, Tarnopolsky MA, Sale DG (1993) Gender differences in strength and muscle fiber characteristics. Eur J Appl Physiol Occup Physiol 66(3):254–262CrossRef Miller AE, MacDougall JD, Tarnopolsky MA, Sale DG (1993) Gender differences in strength and muscle fiber characteristics. Eur J Appl Physiol Occup Physiol 66(3):254–262CrossRef
go back to reference Morrish GM, Woledge RC (1997) A comparison of the activation of muscles moving the patella in normal subjects and in patients with chronic patellofemoral problems. Scand J Rehabil Med 29(1):43–48PubMed Morrish GM, Woledge RC (1997) A comparison of the activation of muscles moving the patella in normal subjects and in patients with chronic patellofemoral problems. Scand J Rehabil Med 29(1):43–48PubMed
go back to reference Powers CM, Bolgla LA, Callaghan MJ, Collins N, Sheehan FT (2012) Patellofemoral pain: proximal, distal, and local factors, 2nd International Research Retreat. J Orthop Sports Phys Ther 42(6):A1–54CrossRef Powers CM, Bolgla LA, Callaghan MJ, Collins N, Sheehan FT (2012) Patellofemoral pain: proximal, distal, and local factors, 2nd International Research Retreat. J Orthop Sports Phys Ther 42(6):A1–54CrossRef
go back to reference Spairani L, Barbero M, Cescon C, Combi F, Gemelli T, Giovanetti G, Magnani B, D’Antona G (2012) An electromyographic study of the vastii muscles during open and closed kinetic chain submaximal isometric exercises. Int J Sports Phys Ther 7(6):617–626PubMedPubMedCentral Spairani L, Barbero M, Cescon C, Combi F, Gemelli T, Giovanetti G, Magnani B, D’Antona G (2012) An electromyographic study of the vastii muscles during open and closed kinetic chain submaximal isometric exercises. Int J Sports Phys Ther 7(6):617–626PubMedPubMedCentral
Metadata
Title
Sex differences in neuromuscular control of quadriceps
Authors
Yi-Ling Peng
Anthony E. Johnson
Lisa Griffin
Publication date
01-10-2020
Publisher
Springer Berlin Heidelberg
Published in
European Journal of Applied Physiology / Issue 10/2020
Print ISSN: 1439-6319
Electronic ISSN: 1439-6327
DOI
https://doi.org/10.1007/s00421-020-04443-0

Other articles of this Issue 10/2020

European Journal of Applied Physiology 10/2020 Go to the issue