TY  - JOUR
PY  - 2021//
TI  - Effect of arm position on spatial distribution of upper trapezius muscle activity during simulated car driving
JO  - International journal of occupational safety and ergonomics
A1  - Watanabe, Kohei
A1  - Yoshida, Takahiro
SP  - ePub
EP  - ePub
VL  - ePub
IS  - ePub
N2  - The present study aimed to investigate the upper trapezius muscle activity during simulated car driving while adopting three different arm positions. Ten participants were instructed to maintain the following positions: hands on the steering wheel (Hands-On), hands not on the steering wheel (Hands-Off), and hands not on the steering wheel but arms on armrests (Armrests). During the tasks, multi-channel surface electromyography (EMG) was recorded from the upper trapezius muscle with 64 two-dimensionally distributed electrodes. Amplitudes of surface EMG in Armrests were lower than in Hands-On (p = 0.004). The spatial distribution of surface EMG changed with time in Hands-Off and Armrests (p < 0.05), but not in Hands-On (p > 0.05). These findings suggest that being freed from steering leads to the recruitment of various muscle fibers/motor units within the upper trapezius muscle and the use of armrests may help reduce the physiological burden loaded on the muscle of drivers.<p />  <p>Language: en</p>
LA  - en
SN  - 1080-3548
UR  - http://dx.doi.org/10.1080/10803548.2021.1929700
ID  - ref1
ER  -