Cross-sectional area of the paraspinal muscles and its association with muscle strength among fighter pilots : A 5-year follow-up

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Honkanen , T , Mäntysaari , M , Leino , T , Avela , J , Kerttula , L , Haapamäki , V & Kyröläinen , H 2019 , ' Cross-sectional area of the paraspinal muscles and its association with muscle strength among fighter pilots : A 5-year follow-up ' , BMC Musculoskeletal Disorders , vol. 20 , no. 1 , 170 . https://doi.org/10.1186/s12891-019-2551-y

Title: Cross-sectional area of the paraspinal muscles and its association with muscle strength among fighter pilots : A 5-year follow-up
Author: Honkanen, Tuomas; Mäntysaari, M.; Leino, Tuomo; Avela, J.; Kerttula, L.; Haapamäki, V.; Kyröläinen, Heikki
Contributor: University of Helsinki, Department of Diagnostics and Therapeutics
University of Helsinki, HUS Medical Imaging Center
Date: 2019
Language: eng
Number of pages: 8
Belongs to series: BMC Musculoskeletal Disorders
ISSN: 1471-2474
URI: http://hdl.handle.net/10138/327563
Abstract: Background: A small cross sectional area (CSA) of the paraspinal muscles may be related to low back pain among military aviators but previous studies have mainly concentrated on spinal disc degeneration. Therefore, the primary aim of the study was to investigate the changes in muscle CSA and composition of the psoas and paraspinal muscles during a 5-year follow up among Finnish Air Force (FINAF) fighter pilots. Methods: Study population consisted of 26 volunteered FINAF male fighter pilots (age: 20.6 (±0.6) at the baseline). The magnetic resonance imaging (MRI) examinations were collected at baseline and after 5 years of follow-up. CSA and composition of the paraspinal and psoas muscles were obtained at the levels of 3-4 and 4-5 lumbar spine. Maximal isometric strength tests were only performed on one occasion at baseline. Results: The follow-up comparisons indicated that the mean CSA of the paraspinal muscles increased (p <0.01) by 8% at L3-4 level and 7% at L4-5 level during the 5-year period. There was no change in muscle composition during the follow-up period. The paraspinal and psoas muscles' CSA was positively related to overall maximal isometric strength at the baseline. However, there was no association between LBP and muscle composition or CSA. Conclusions: The paraspinal muscles' CSA increased among FINAF fighter pilots during the first 5 years of service. This might be explained by physically demanding work and regular physical activity. However, no associations between muscle composition or CSA and low back pain (LBP) experienced were observed after the five-year follow-up. © 2019 The Author(s).
Subject: G-force
Isometric strength
Low back pain
Military aviation
MRI
Muscle composition
adult
airplane pilot
Article
controlled study
disease association
Finn (citizen)
follow up
human
low back pain
lumbar spine
male
muscle isometric contraction
muscle mass
muscle strength
nuclear magnetic resonance imaging
paraspinal muscle
physical activity
psoas muscle
volunteer
work
young adult
anatomy
anatomy and histology
Finland
incidence
longitudinal study
lumbar vertebra
occupational disease
pathophysiology
physiology
Adult
Anatomy, Cross-Sectional
Follow-Up Studies
Humans
Incidence
Longitudinal Studies
Low Back Pain
Lumbar Vertebrae
Magnetic Resonance Imaging
Male
Muscle Strength
Occupational Diseases
Paraspinal Muscles
Pilots
Young Adult
3121 General medicine, internal medicine and other clinical medicine
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