Neck and shoulder muscle activity and posture among helicopter pilots and crew-members during military helicopter flight
| Autor: | Shadi Samir Chreiteh, Britt Lange, Mike Murray, Eleanor Boyle, Gisela Sjøgaard, Bo Riebeling Nørnberg, Henrik Baare Olsen, Karen Søgaard |
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| Rok vydání: | 2016 |
| Předmět: |
Adult
Male 030110 physiology 0301 basic medicine Shoulder medicine.medical_specialty Aircraft genetic structures Denmark Posture Biophysics Neuroscience (miscellaneous) Crew Workload Electromyography 03 medical and health sciences 0302 clinical medicine Neck Muscles medicine Humans Muscle activity Neck pain Neck Pain medicine.diagnostic_test business.industry Significant difference Shoulder muscle Middle Aged body regions Military Personnel Physical therapy Female Head Protective Devices Neurology (clinical) medicine.symptom business 030217 neurology & neurosurgery |
| Zdroj: | Murray, M, Lange, B, Chreiteh, S S, Olsen, H B, Nørnberg, B R, Boyle, E, Søgaard, K & Sjøgaard, G 2016, ' Neck and shoulder muscle activity and posture among helicopter pilots and crew-members during military helicopter flight ', Journal of Electromyography & Kinesiology, vol. 27, pp. 10-17 . https://doi.org/10.1016/j.jelekin.2015.12.009 |
| ISSN: | 1050-6411 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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