TY - GEN
T1 - Methodological consideration for the recruitment of upper limb muscles during two joint arm movements
AU - Miyoshi, Tasuku
AU - Takahashi, Yoshiyuki
AU - Lee, Hokyoo
AU - Yamaguchi, Masaki
AU - Komeda, Takashi
PY - 2009/11/17
Y1 - 2009/11/17
N2 - We investigated muscle activation levels or patterns determined during two-joint arm movements. Twelve subjects were instructed to move their right (dominant) wrists in a horizontal plane. Surface electromyographic activities were recorded from the brachioradialis, biceps brachii, and triceps brachii. The muscle activation level was demonstrated as a function of both the elbow and shoulder torque in a 3-dimensional plot and was represented as an eigen plane and dynamic preferred direction (PD). The PD of the bi-articular muscles was suitable for its anatomical and functional roles; however, that of the mono-articular brachioradialis muscle was affected by the shoulder torque. These results suggested that the bi-articular muscle makes the main contribution toward the generation of the kinematic requirement and/or control of the endpoint movement.
AB - We investigated muscle activation levels or patterns determined during two-joint arm movements. Twelve subjects were instructed to move their right (dominant) wrists in a horizontal plane. Surface electromyographic activities were recorded from the brachioradialis, biceps brachii, and triceps brachii. The muscle activation level was demonstrated as a function of both the elbow and shoulder torque in a 3-dimensional plot and was represented as an eigen plane and dynamic preferred direction (PD). The PD of the bi-articular muscles was suitable for its anatomical and functional roles; however, that of the mono-articular brachioradialis muscle was affected by the shoulder torque. These results suggested that the bi-articular muscle makes the main contribution toward the generation of the kinematic requirement and/or control of the endpoint movement.
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U2 - 10.1109/ICORR.2009.5209627
DO - 10.1109/ICORR.2009.5209627
M3 - Conference contribution
AN - SCOPUS:70449368583
SN - 9781424437894
T3 - 2009 IEEE International Conference on Rehabilitation Robotics, ICORR 2009
SP - 442
EP - 446
BT - 2009 IEEE International Conference on Rehabilitation Robotics, ICORR 2009
T2 - 2009 IEEE International Conference on Rehabilitation Robotics, ICORR 2009
Y2 - 23 June 2009 through 26 June 2009
ER -