Neck and shoulder muscle activity and posture among helicopter pilots and crew-members during military helicopter flight

Mike Murray, Britt Lange, Shadi Samir Chreiteh, Henrik Baare Olsen, Bo Riebeling Nørnberg, Eleanor Boyle, Karen Søgaard, Gisela Sjøgaard

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Neck pain among helicopter pilots and crew-members is common. This study quantified the physical workload on neck and shoulder muscles using electromyography (EMG) measures during helicopter flight. Nine standardized sorties were performed, encompassing: cruising from location A to location B (AB) and performing search and rescue (SAR). SAR was performed with Night Vision Goggles (NVG), while AB was performed with (AB+NVG) and without NVG (AB-NVG). EMG was recorded for: trapezius (TRA), upper neck extensors (UNE), and sternocleido-mastoid (SCM). Maximal voluntary contractions (MVC) were performed for normalization of EMG (MVE). Neck posture of pilots and crew-members was monitored and pain intensity of neck, shoulder, and back was recorded. Mean muscle activity for UNE was ∼10% MVE and significantly higher than TRA and SCM, and SCM was significantly lower than TRA. There was no significant difference between AB-NVG and AB+NVG. Muscle activity in the UNE was significantly higher during SAR+NVG than AB-NVG. Sortie time (%) with non-neutral neck posture for SAR+NVG and AB-NVG was: 80.4%, 74.5% (flexed), 55.5%, 47.9% (rotated), 4.5%, 3.7% (lateral flexed). Neck pain intensity increased significantly from pre- (0.7±1.3) to post-sortie (1.6±1.9) for pilots (p=0.028). If sustained, UNE activity of ∼10% MVE is high, and implies a risk for neck disorders.

Original languageEnglish
JournalJournal of Electromyography & Kinesiology
Volume27
Pages (from-to)10-17
ISSN1050-6411
DOIs
Publication statusPublished - 2016

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Night Vision
Eye Protective Devices
Neck Muscles
Mastoid
Superficial Back Muscles
Neck Pain
Electromyography
Muscles
Workload

Cite this

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title = "Neck and shoulder muscle activity and posture among helicopter pilots and crew-members during military helicopter flight",
abstract = "Neck pain among helicopter pilots and crew-members is common. This study quantified the physical workload on neck and shoulder muscles using electromyography (EMG) measures during helicopter flight. Nine standardized sorties were performed, encompassing: cruising from location A to location B (AB) and performing search and rescue (SAR). SAR was performed with Night Vision Goggles (NVG), while AB was performed with (AB+NVG) and without NVG (AB-NVG). EMG was recorded for: trapezius (TRA), upper neck extensors (UNE), and sternocleido-mastoid (SCM). Maximal voluntary contractions (MVC) were performed for normalization of EMG (MVE). Neck posture of pilots and crew-members was monitored and pain intensity of neck, shoulder, and back was recorded. Mean muscle activity for UNE was ∼10{\%} MVE and significantly higher than TRA and SCM, and SCM was significantly lower than TRA. There was no significant difference between AB-NVG and AB+NVG. Muscle activity in the UNE was significantly higher during SAR+NVG than AB-NVG. Sortie time ({\%}) with non-neutral neck posture for SAR+NVG and AB-NVG was: 80.4{\%}, 74.5{\%} (flexed), 55.5{\%}, 47.9{\%} (rotated), 4.5{\%}, 3.7{\%} (lateral flexed). Neck pain intensity increased significantly from pre- (0.7±1.3) to post-sortie (1.6±1.9) for pilots (p=0.028). If sustained, UNE activity of ∼10{\%} MVE is high, and implies a risk for neck disorders.",
author = "Mike Murray and Britt Lange and Chreiteh, {Shadi Samir} and Olsen, {Henrik Baare} and N{\o}rnberg, {Bo Riebeling} and Eleanor Boyle and Karen S{\o}gaard and Gisela Sj{\o}gaard",
note = "Copyright {\circledC} 2016 Elsevier Ltd. All rights reserved.",
year = "2016",
doi = "10.1016/j.jelekin.2015.12.009",
language = "English",
volume = "27",
pages = "10--17",
journal = "Journal of Electromyography & Kinesiology",
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Neck and shoulder muscle activity and posture among helicopter pilots and crew-members during military helicopter flight. / Murray, Mike; Lange, Britt; Chreiteh, Shadi Samir; Olsen, Henrik Baare; Nørnberg, Bo Riebeling; Boyle, Eleanor; Søgaard, Karen; Sjøgaard, Gisela.

In: Journal of Electromyography & Kinesiology, Vol. 27, 2016, p. 10-17.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Neck and shoulder muscle activity and posture among helicopter pilots and crew-members during military helicopter flight

AU - Murray, Mike

AU - Lange, Britt

AU - Chreiteh, Shadi Samir

AU - Olsen, Henrik Baare

AU - Nørnberg, Bo Riebeling

AU - Boyle, Eleanor

AU - Søgaard, Karen

AU - Sjøgaard, Gisela

N1 - Copyright © 2016 Elsevier Ltd. All rights reserved.

PY - 2016

Y1 - 2016

N2 - Neck pain among helicopter pilots and crew-members is common. This study quantified the physical workload on neck and shoulder muscles using electromyography (EMG) measures during helicopter flight. Nine standardized sorties were performed, encompassing: cruising from location A to location B (AB) and performing search and rescue (SAR). SAR was performed with Night Vision Goggles (NVG), while AB was performed with (AB+NVG) and without NVG (AB-NVG). EMG was recorded for: trapezius (TRA), upper neck extensors (UNE), and sternocleido-mastoid (SCM). Maximal voluntary contractions (MVC) were performed for normalization of EMG (MVE). Neck posture of pilots and crew-members was monitored and pain intensity of neck, shoulder, and back was recorded. Mean muscle activity for UNE was ∼10% MVE and significantly higher than TRA and SCM, and SCM was significantly lower than TRA. There was no significant difference between AB-NVG and AB+NVG. Muscle activity in the UNE was significantly higher during SAR+NVG than AB-NVG. Sortie time (%) with non-neutral neck posture for SAR+NVG and AB-NVG was: 80.4%, 74.5% (flexed), 55.5%, 47.9% (rotated), 4.5%, 3.7% (lateral flexed). Neck pain intensity increased significantly from pre- (0.7±1.3) to post-sortie (1.6±1.9) for pilots (p=0.028). If sustained, UNE activity of ∼10% MVE is high, and implies a risk for neck disorders.

AB - Neck pain among helicopter pilots and crew-members is common. This study quantified the physical workload on neck and shoulder muscles using electromyography (EMG) measures during helicopter flight. Nine standardized sorties were performed, encompassing: cruising from location A to location B (AB) and performing search and rescue (SAR). SAR was performed with Night Vision Goggles (NVG), while AB was performed with (AB+NVG) and without NVG (AB-NVG). EMG was recorded for: trapezius (TRA), upper neck extensors (UNE), and sternocleido-mastoid (SCM). Maximal voluntary contractions (MVC) were performed for normalization of EMG (MVE). Neck posture of pilots and crew-members was monitored and pain intensity of neck, shoulder, and back was recorded. Mean muscle activity for UNE was ∼10% MVE and significantly higher than TRA and SCM, and SCM was significantly lower than TRA. There was no significant difference between AB-NVG and AB+NVG. Muscle activity in the UNE was significantly higher during SAR+NVG than AB-NVG. Sortie time (%) with non-neutral neck posture for SAR+NVG and AB-NVG was: 80.4%, 74.5% (flexed), 55.5%, 47.9% (rotated), 4.5%, 3.7% (lateral flexed). Neck pain intensity increased significantly from pre- (0.7±1.3) to post-sortie (1.6±1.9) for pilots (p=0.028). If sustained, UNE activity of ∼10% MVE is high, and implies a risk for neck disorders.

U2 - 10.1016/j.jelekin.2015.12.009

DO - 10.1016/j.jelekin.2015.12.009

M3 - Journal article

VL - 27

SP - 10

EP - 17

JO - Journal of Electromyography & Kinesiology

JF - Journal of Electromyography & Kinesiology

SN - 1050-6411

ER -