SAFETYLIT WEEKLY UPDATE

We compile citations and summaries of about 400 new articles every week.
RSS Feed

HELP: Tutorials | FAQ
CONTACT US: Contact info

Search Results

Journal Article

Citation

Novais-Shimano SG, Shimano MM, Marcolino AM, de Cássia Registro Fonseca M. J. Back Musculoskelet. Rehabil. 2014; 28(1): 159-166.

Affiliation

Department of Biomechanics, Medicine and Locomotor Rehabilitation, Ribeirao Preto School of Medicine, University of São Paulo, Ribeirao Preto, Brazil.

Copyright

(Copyright © 2014, IOS Press)

DOI

10.3233/BMR-140504

PMID

25096311

Abstract

BACKGROUND AND OBJECTIVES: The physical injuries caused by +Gz include skeletal-muscle overloads. This study has aimed at demonstrating ergonomic conditions of the pilots from the Brazilian Air Force's Aerial Demonstration Squadron (BAFADS) during flight.

METHODS: All the 13 pilots from the BAFADS were evaluated through an interview. Surface electromyography (SEMG) was employed during the flight manoeuvre simulation (under normal and overload conditions).

RESULTS: The report analyses showed perception of discomfort in the right shoulder related to +Gz. The SEMG showed moderate levels of shoulder muscles activation for normal contractions (± 25%). During vigorous contraction, levels of recruitment were high: upper trapezius fibres (± 105%), middle trapezius fibres (± 90%) and posterior deltoid fibres (± 95%). The great demand from the deltoid muscles (posterior fibres) infers a very high level of recruitment from the rotator cuff muscle, which may explain the discomfort in the pilots' shoulder during the flight manoeuvre.

CONCLUSION: The mutual analysis of both methods not only does it demonstrate a correlation between symptoms and muscle recruitment, but also provides data to implement intervention measures for pilots' physical training in order to minimise the discomfort symptoms during flights.


Language: en

NEW SEARCH


All SafetyLit records are available for automatic download to Zotero & Mendeley
Print