Effects of stretching on muscle activation in gas cylinder handling

Autor: Amy Wadeson, Melissa Mae White, David B. Kaber, Mei Y. Lau, Wenjuan Zhang
Rok vydání: 2020
Předmět:
Zdroj: Work. 66:149-160
ISSN: 1875-9270
1051-9815
DOI: 10.3233/wor-203159
Popis: BACKGROUND Previously, a stretching regimen was designed for manual material handling (MMH) of gas cylinders as a potential ergonomic solution for reducing occupational injury. No studies have made use of objective process measures, such as muscle activation levels, for evaluation of effects of stretching programs. OBJECTIVE Examine acute effects of stretching on muscle activation levels and driver perceived level of exertion in gas cylinder handling during simulated delivery operations. METHODS A within-subject experiment was conducted with eight male participants being subjected randomly to two conditions over a two-day period: stretching before delivery trials and no stretching. Surface electromyography and the Borg CR-10 scale for perceived exertion were used. RESULTS Generally, results were variable among muscle responses. The extensor muscle bundle in the forearm was found to show a significant decrease (p = 0.0464) in activation level because of stretching. The anterior deltoid and trapezius significantly increased (p
Databáze: OpenAIRE
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