Shinichi Fukuhara    Department   Kawasaki University of Medical Welfare  ,    Position   Associate Professor
Language	Japanese
Title	Evaluation of skeletal muscle contraction during pedaling of recumbent bicycle using MMG/EMG hybrid transducer
Conference Type	Nationwide Conferences
Presentation Type	Poster notice
Lecture Type	General
Date	2016/04/27
Society abstract	第54巻特別号プログラム・抄録集 54,176 2016
Summary	Electromyogram (EMG) is recorded electrical muscle contraction, Mechanomyogram (MMG) indicates cross-sectional area change of muscle, reflect mechanical muscle contraction. By simultaneously measuring both signals, it is possible to multifaceted evaluation of muscle contraction. However, MMG measurement at voluntary movement was difficult. Therefore, the authors had developed small MMG / EMG hybrid transducer capable of simultaneous measurement of MMG and EMG. This study evaluated MMG and EMG of rectus femoris(RF) and hamstrings using recumbent bicycle of easy load regulation. As result, dMMGDC(displacement MMG) indicated cross-sectional area change of muscle at up and down of pedal. In addition, EMG and dMMGDC increased with down of pedal in RF, dMMGacc(acceleration dMMGDC) showing the muscle contraction force was output simultaneously. Each signal of hamstrings had output that antagonize RF. By simultaneously measuring MMG and EMG at recumbent bicycle pedaling, it was possible to evaluate muscle contraction of voluntary movement.