Cargando…

Muscle strength differences in healthy young adults with and without generalized joint hypermobility: a cross-sectional study

BACKGROUND: Generalized joint hypermobility (GJH), in the absence of symptoms, is a common clinical finding. The joint instability present due to excessive musculoskeletal flexibility in hypermobile joints impairs the external force production during muscle contraction. However, whether GJH is assoc...

Descripción completa

Detalles Bibliográficos
Autores principales: Jindal, Pranay, Narayan, Amitesh, Ganesan, Sailakshami, MacDermid, Joy C.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4845357/
https://www.ncbi.nlm.nih.gov/pubmed/27119015
http://dx.doi.org/10.1186/s13102-016-0037-x
_version_ 1782428927433637888
author Jindal, Pranay
Narayan, Amitesh
Ganesan, Sailakshami
MacDermid, Joy C.
author_facet Jindal, Pranay
Narayan, Amitesh
Ganesan, Sailakshami
MacDermid, Joy C.
author_sort Jindal, Pranay
collection PubMed
description BACKGROUND: Generalized joint hypermobility (GJH), in the absence of symptoms, is a common clinical finding. The joint instability present due to excessive musculoskeletal flexibility in hypermobile joints impairs the external force production during muscle contraction. However, whether GJH is associated with muscle weakness is unclear. This study evaluated differences in upper and lower limb muscle strengths among asymptomatic young adults with and without GJH. METHODS: One hundred six young adults (53 hypermobile, i.e. 25 male (mean age 22 ± 1.8); 28 female (mean age 21 ± 1.8), and 53 non-hypermobile, i.e. 25 male (mean age 19 ± 1.06); 28 female (mean age 20 ± 1.4) were selected using a cut-off ≥ 4 on Beighton and Horan Joint Mobility Index. Isometric strength of elbow and knee extensors was measured using an isokinetic dynamometer. Independent sample t- tests were done to compare the muscle strengths of hypermobile and non-hypermobile participants. One-way ANCOVA was applied to control the effect of height and body mass on muscle strength. RESULTS: Male hypermobile participants had significantly less strength than non-hypermobile males in the right (71.7 Nm, SD = 23.1, vs 97.6 Nm, SD = 47.4, p = 0.006*) and left (74.8 Nm, SD = 24.3, vs 97.7 Nm, SD = 45.5, p = 0.007*) elbow extensors and right knee extensors (188.7 Nm, SD = 83.3, vs 228.3 Nm, SD = 106.7, p = 0.03*). In females, both elbow extensors (right: 51.9 Nm, SD = 16.2 vs 48.8 Nm, SD = 17.8, p = 0.4; left: 48.9 Nm, SD = 17.2, vs 44.7 Nm, SD = 15.1, p = 0.2) and knee extensors (right: 161.3 Nm, SD = 74.9 vs 145.5 Nm, SD = 75.8, p = 0.3; left: 155.2 Nm, SD = 73 vs 124.3 Nm, SD = 69.6, p = 0.07) strength were not statistically different between hypermobile and non-hypermobile participants. CONCLUSION: The findings indicate that male participants with GJH have less isometric muscle strength in both elbow extensors and right knee extensors compared to non-hypermobile male participants. Female hypermobile participants did not show any significant differences in muscle strength compared to non-hypermobile female participants. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/s13102-016-0037-x) contains supplementary material, which is available to authorized users.
format Online
Article
Text
id pubmed-4845357
institution National Center for Biotechnology Information
language English
publishDate 2016
publisher BioMed Central
record_format MEDLINE/PubMed
spelling pubmed-48453572016-04-27 Muscle strength differences in healthy young adults with and without generalized joint hypermobility: a cross-sectional study Jindal, Pranay Narayan, Amitesh Ganesan, Sailakshami MacDermid, Joy C. BMC Sports Sci Med Rehabil Research Article BACKGROUND: Generalized joint hypermobility (GJH), in the absence of symptoms, is a common clinical finding. The joint instability present due to excessive musculoskeletal flexibility in hypermobile joints impairs the external force production during muscle contraction. However, whether GJH is associated with muscle weakness is unclear. This study evaluated differences in upper and lower limb muscle strengths among asymptomatic young adults with and without GJH. METHODS: One hundred six young adults (53 hypermobile, i.e. 25 male (mean age 22 ± 1.8); 28 female (mean age 21 ± 1.8), and 53 non-hypermobile, i.e. 25 male (mean age 19 ± 1.06); 28 female (mean age 20 ± 1.4) were selected using a cut-off ≥ 4 on Beighton and Horan Joint Mobility Index. Isometric strength of elbow and knee extensors was measured using an isokinetic dynamometer. Independent sample t- tests were done to compare the muscle strengths of hypermobile and non-hypermobile participants. One-way ANCOVA was applied to control the effect of height and body mass on muscle strength. RESULTS: Male hypermobile participants had significantly less strength than non-hypermobile males in the right (71.7 Nm, SD = 23.1, vs 97.6 Nm, SD = 47.4, p = 0.006*) and left (74.8 Nm, SD = 24.3, vs 97.7 Nm, SD = 45.5, p = 0.007*) elbow extensors and right knee extensors (188.7 Nm, SD = 83.3, vs 228.3 Nm, SD = 106.7, p = 0.03*). In females, both elbow extensors (right: 51.9 Nm, SD = 16.2 vs 48.8 Nm, SD = 17.8, p = 0.4; left: 48.9 Nm, SD = 17.2, vs 44.7 Nm, SD = 15.1, p = 0.2) and knee extensors (right: 161.3 Nm, SD = 74.9 vs 145.5 Nm, SD = 75.8, p = 0.3; left: 155.2 Nm, SD = 73 vs 124.3 Nm, SD = 69.6, p = 0.07) strength were not statistically different between hypermobile and non-hypermobile participants. CONCLUSION: The findings indicate that male participants with GJH have less isometric muscle strength in both elbow extensors and right knee extensors compared to non-hypermobile male participants. Female hypermobile participants did not show any significant differences in muscle strength compared to non-hypermobile female participants. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/s13102-016-0037-x) contains supplementary material, which is available to authorized users. BioMed Central 2016-04-25 /pmc/articles/PMC4845357/ /pubmed/27119015 http://dx.doi.org/10.1186/s13102-016-0037-x Text en © Jindal et al. 2016 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
spellingShingle Research Article
Jindal, Pranay
Narayan, Amitesh
Ganesan, Sailakshami
MacDermid, Joy C.
Muscle strength differences in healthy young adults with and without generalized joint hypermobility: a cross-sectional study
title Muscle strength differences in healthy young adults with and without generalized joint hypermobility: a cross-sectional study
title_full Muscle strength differences in healthy young adults with and without generalized joint hypermobility: a cross-sectional study
title_fullStr Muscle strength differences in healthy young adults with and without generalized joint hypermobility: a cross-sectional study
title_full_unstemmed Muscle strength differences in healthy young adults with and without generalized joint hypermobility: a cross-sectional study
title_short Muscle strength differences in healthy young adults with and without generalized joint hypermobility: a cross-sectional study
title_sort muscle strength differences in healthy young adults with and without generalized joint hypermobility: a cross-sectional study
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4845357/
https://www.ncbi.nlm.nih.gov/pubmed/27119015
http://dx.doi.org/10.1186/s13102-016-0037-x
work_keys_str_mv AT jindalpranay musclestrengthdifferencesinhealthyyoungadultswithandwithoutgeneralizedjointhypermobilityacrosssectionalstudy
AT narayanamitesh musclestrengthdifferencesinhealthyyoungadultswithandwithoutgeneralizedjointhypermobilityacrosssectionalstudy
AT ganesansailakshami musclestrengthdifferencesinhealthyyoungadultswithandwithoutgeneralizedjointhypermobilityacrosssectionalstudy
AT macdermidjoyc musclestrengthdifferencesinhealthyyoungadultswithandwithoutgeneralizedjointhypermobilityacrosssectionalstudy