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Lumbar Back Muscle Activity of Helicopter Pilots and Whole-body Vibration by Carlos Gomes de Oliveira; David Martin Simpson; Jurandir Nadal is a Medicine article available to read on EtoBox.

What is Lumbar Back Muscle Activity of Helicopter Pilots and Whole-body Vibration about?

Several studies have attributed the prevalence of low back pain (LBP) in helicopter pilots mainly to poor posture in-flight and whole-body vibration, with the latter hypothesis particularly related to a cyclic response of the erector spine (ES) muscle to vibration. This work aims to determine if helicopter vibration and the pilot's normal posture during flight have significant effects on the electromyogram (EMG) of the ES muscle. The bilateral surface EMG of the ES muscle at the L3 level was collected in 10 young pilots before and during a short flight in UH-50 helicopters. The vibration was monitored by a triaxial accelerometer fixed to the pilots' seat. Prior to the flight, the EMG was recorded for relaxed seated and standing postures with 01 (P0) and 351 (P35) of trunk flexion. The effect of the posture during the flight was tested by comparing left and right EMG (normalized with respect to P35). The in-flight muscle stress was evaluated by histograms of EMG activity, and compared to P0 values. Only one pilot in ten showed significant (po0:05) correlation between the vibration and the EMG over cycles of vibration, and no consistent causal effect was found. The pilots' posture di

Who reads Lumbar Back Muscle Activity of Helicopter Pilots and Whole-body Vibration?

Author

Carlos Gomes de Oliveira; David Martin Simpson; Jurandir Nadal

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0021-9290)

Published

2001

Language

EN

Field

Medicine (Health Sciences)