Alterations in neuromuscular function in girls with generalized joint hypermobility

Bente Rona Jensen; Jesper Ninn Sandfeld Melcher; Pia Sandfeld Melcher; Katrine Lyders Johansen; Peter Hendriksen; Birgit Juul-Kristensen

doi:10.1186/s12891-016-1267-5

Alterations in neuromuscular function in girls with generalized joint hypermobility

Bente Rona Jensen
, Jesper Ninn Sandfeld Melcher
, Pia Sandfeld Melcher
, Katrine Lyders Johansen
, Peter Hendriksen
, Birgit Juul-Kristensen

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

BACKGROUND: Generalized Joint Hypermobility (GJH) is associated with increased risk of musculoskeletal joint pain. We investigated neuromuscular performance and muscle activation strategy.

METHODS: Girls with GJH and non-GJH (NGJH) performed isometric knee flexions (90°,110°,130°), and extensions (90°) at 20 % Maximum Voluntary Contraction, and explosive isometric knee flexions while sitting. EMG was recorded from knee flexor and extensor muscles.

RESULTS: Early rate of torque development was 53 % faster for GJH. Reduced hamstring muscle activation in girls with GJH was found while knee extensor and calf muscle activation did not differ between groups. Flexion-extension and medial-lateral co-activation ratio during flexions were higher for girls with GJH than NGJH girls.

CONCLUSIONS: Girls with GJH had higher capacity to rapidly generate force than NGJH girls which may reflect motor adaptation to compensate for hypermobility. Higher medial muscle activation indicated higher levels of medial knee joint compression in girls with GJH. Increased flexion-extension co-activation ratios in GJH were explained by decreased agonist drive to the hamstrings.

Original language	English
Article number	410
Journal	BMC Musculoskeletal Disorders
Volume	17
Issue number	1
Pages (from-to)	1-8
Number of pages	8
ISSN	1471-2474
DOIs	https://doi.org/10.1186/s12891-016-1267-5
Publication status	Published - 3 Oct 2016
Externally published	Yes

Keywords

health, nutrition and quality of life
Adolescent
Cohort Studies
Humans
Adaptation, Physiological
Electromyography
Isometric Contraction
Arthralgia/etiology
Female
Joint Instability/complications
Knee Joint/physiopathology
Muscle, Skeletal/physiopathology
Range of Motion, Articular
Torque

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title = "Alterations in neuromuscular function in girls with generalized joint hypermobility",

abstract = "BACKGROUND: Generalized Joint Hypermobility (GJH) is associated with increased risk of musculoskeletal joint pain. We investigated neuromuscular performance and muscle activation strategy.METHODS: Girls with GJH and non-GJH (NGJH) performed isometric knee flexions (90°,110°,130°), and extensions (90°) at 20 \% Maximum Voluntary Contraction, and explosive isometric knee flexions while sitting. EMG was recorded from knee flexor and extensor muscles.RESULTS: Early rate of torque development was 53 \% faster for GJH. Reduced hamstring muscle activation in girls with GJH was found while knee extensor and calf muscle activation did not differ between groups. Flexion-extension and medial-lateral co-activation ratio during flexions were higher for girls with GJH than NGJH girls.CONCLUSIONS: Girls with GJH had higher capacity to rapidly generate force than NGJH girls which may reflect motor adaptation to compensate for hypermobility. Higher medial muscle activation indicated higher levels of medial knee joint compression in girls with GJH. Increased flexion-extension co-activation ratios in GJH were explained by decreased agonist drive to the hamstrings.",

keywords = "hypermobility, Hypermobilitet, health, nutrition and quality of life, Adolescent, Cohort Studies, Humans, Adaptation, Physiological, Electromyography, Isometric Contraction, Arthralgia/etiology, Female, Joint Instability/complications, Knee Joint/physiopathology, Muscle, Skeletal/physiopathology, Range of Motion, Articular, Torque",

author = "Jensen, \{Bente Rona\} and Melcher, \{Jesper Ninn Sandfeld\} and Melcher, \{Pia Sandfeld\} and Johansen, \{Katrine Lyders\} and Peter Hendriksen and Birgit Juul-Kristensen",

note = "Publisher Copyright: {\textcopyright} 2016 The Author(s).",

year = "2016",

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doi = "10.1186/s12891-016-1267-5",

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T1 - Alterations in neuromuscular function in girls with generalized joint hypermobility

AU - Jensen, Bente Rona

AU - Melcher, Jesper Ninn Sandfeld

AU - Melcher, Pia Sandfeld

AU - Johansen, Katrine Lyders

AU - Hendriksen, Peter

AU - Juul-Kristensen, Birgit

PY - 2016/10/3

Y1 - 2016/10/3

N2 - BACKGROUND: Generalized Joint Hypermobility (GJH) is associated with increased risk of musculoskeletal joint pain. We investigated neuromuscular performance and muscle activation strategy.METHODS: Girls with GJH and non-GJH (NGJH) performed isometric knee flexions (90°,110°,130°), and extensions (90°) at 20 % Maximum Voluntary Contraction, and explosive isometric knee flexions while sitting. EMG was recorded from knee flexor and extensor muscles.RESULTS: Early rate of torque development was 53 % faster for GJH. Reduced hamstring muscle activation in girls with GJH was found while knee extensor and calf muscle activation did not differ between groups. Flexion-extension and medial-lateral co-activation ratio during flexions were higher for girls with GJH than NGJH girls.CONCLUSIONS: Girls with GJH had higher capacity to rapidly generate force than NGJH girls which may reflect motor adaptation to compensate for hypermobility. Higher medial muscle activation indicated higher levels of medial knee joint compression in girls with GJH. Increased flexion-extension co-activation ratios in GJH were explained by decreased agonist drive to the hamstrings.

AB - BACKGROUND: Generalized Joint Hypermobility (GJH) is associated with increased risk of musculoskeletal joint pain. We investigated neuromuscular performance and muscle activation strategy.METHODS: Girls with GJH and non-GJH (NGJH) performed isometric knee flexions (90°,110°,130°), and extensions (90°) at 20 % Maximum Voluntary Contraction, and explosive isometric knee flexions while sitting. EMG was recorded from knee flexor and extensor muscles.RESULTS: Early rate of torque development was 53 % faster for GJH. Reduced hamstring muscle activation in girls with GJH was found while knee extensor and calf muscle activation did not differ between groups. Flexion-extension and medial-lateral co-activation ratio during flexions were higher for girls with GJH than NGJH girls.CONCLUSIONS: Girls with GJH had higher capacity to rapidly generate force than NGJH girls which may reflect motor adaptation to compensate for hypermobility. Higher medial muscle activation indicated higher levels of medial knee joint compression in girls with GJH. Increased flexion-extension co-activation ratios in GJH were explained by decreased agonist drive to the hamstrings.

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KW - Adolescent

KW - Cohort Studies

KW - Humans

KW - Adaptation, Physiological

KW - Electromyography

KW - Isometric Contraction

KW - Arthralgia/etiology

KW - Female

KW - Joint Instability/complications

KW - Knee Joint/physiopathology

KW - Muscle, Skeletal/physiopathology

KW - Range of Motion, Articular

KW - Torque

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U2 - 10.1186/s12891-016-1267-5

DO - 10.1186/s12891-016-1267-5

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SN - 1471-2474

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SP - 1

EP - 8

JO - BMC Musculoskeletal Disorders

JF - BMC Musculoskeletal Disorders

IS - 1

M1 - 410

ER -

Alterations in neuromuscular function in girls with generalized joint hypermobility

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