2009 Fiscal Year Final Research Report
Expertise-dependent modulation of muscular and non-muscular torques in multi-joint arm movements during piano keystroke.
| Project/Area Number |
20800063
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| Research Category |
Grant-in-Aid for Young Scientists (Start-up)
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| Allocation Type | Single-year Grants |
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| Research Field |
Physical education
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| Research Institution | Kwansei Gakuin University |
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Principal Investigator |
FURUYA Shinichi Kwansei Gakuin University, 理工学研究科, 博士研究員 (20509690)
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| Project Period (FY) |
2008 – 2009
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| Keywords | 神経科学 / 生体工学 / 制御工学 / ロボティクス / モーターコントロール |
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| Research Abstract |
The present study investigated expert-novice differences in the kinetics of upper-limb movement during the keystroke on the piano. Kinematic and electromyographic (EMG) recordings were made while seven experts and seven novices of piano players performed a right hand octave keystroke with staccato articulation. Using the inverse dynamics technique, motion-dependent interaction, gravitational, and muscular torques generated at the shoulder, elbow and wrist joints were computed. The experts produced larger interaction torques at the elbow and wrist joints as compared to the novices, and thereby alleviated muscular torques at these joints. To generate elbow muscular torque, the experts deactivated the biceps muscle, whereas the novices contracted the triceps. These suggest that pianists acquired motor skill of lessening muscular load during a keystroke by utilizing non-muscular torques through long-term piano training.
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