32S 筋電位のオンライン解析によるランニング中の下肢筋疲労の評価

概要

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The purpose of this study was to develop EMG online analysis system in order to estimate muscle fatigue of lower extremity during running. A system was developed using (LabVIEW)^<TM> version 6.1 (National Instruments). One subject ran on a treadmill at running speed above anaerobic threshold level for 15 minutes in 5% incline running. Landing time using foot sensor set under heel of right foot, surface electromyography (EMG) of tibialis anterior (TA), gastrocnemius medialis (MG), rectus femoris (RF) and biceps femoris (BF), and acceleration at tibial tuberosity were measured. Pitch, mean power frequency (MPF), averaged integrated EMG (Averaged iEMG), and peak acceleration (PA) at foot strike were calculated. In TA, MG and RF, MPF were decreased, and Averaged iEMG were increased with running time. Then PA was increased, and Pitch was decreased. Based on these results, muscle fatigue was appeared in these muscles, and running form was changed by muscle fatigue. Using this system we can estimate muscle fatigue immediately during running.
一般社団法人日本機械学会の論文
2003-11-07