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Analysis of Lower Extremity Muscle Activities in Parkinson`s Patients for Improving to Stop Task
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 Title & Authors
Analysis of Lower Extremity Muscle Activities in Parkinson`s Patients for Improving to Stop Task
Yang, Chang-Soo; Lim, Bee-Oh;
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 Abstract
Freezing of gait is a severely problem in people with Parkinson`s disease. The purpose of this study was to investigate the muscle activities of adductor longus, gluteus medius, gluteus maximus, biceps femoris, rectus femoris, gastrocnemius, and tibialis anterior using Noraxon 8 channels EMG system during stop task in patients with Parkinson`s disease. Seven parkinson`s patients and age matched normal participants were recruited in the study. Filtered EMG signals were rectified, smoothed and integrated. To control for the altered timing and magnitude of activity, iEMG was normalized for time and peak value. The results indicated that the patients with Parkinson showed decreased gait cycle, stance phase, swing phase time, swing phase time ratio and increased stance phase time ratio than normal participants. The patients with Parkinson showed decreased gastrocnemius muscle activity time ratio, while increased tibialis anterior muscle activity time ratio than normal participants. During stance phase before stop, the patients with Parkinson showed relatively lower average and peak iEMG in anterior tibialis and gastrocnemius muscle than normal participants. During swing phase before stop, the patients with Parkinson showed relatively higher average iEMG in gastrocnemius muscle than normal participants. During stop phase, the patients with Parkinson showed relatively lower average and peak iEMG in anterior tibialis and gastrocnemius muscle than normal participants.
 Keywords
Parkinson`s Disease;Stop Task;Lower Extremity Muscle Activity;Electromyography;
 Language
Korean
 Cited by
1.
파킨슨 환자들의 질환등급, 균형, 낙상 및 보행능력 평가척도 고찰,김창환;김미영;임비오;

한국운동역학회지, 2015. vol.25. 4, pp.441-451 crossref(new window)
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A Literature Review of Parkinson's Disease Rating, Balance, Fall and Gait Scales, Korean Journal of Sport Biomechanics, 2015, 25, 4, 441  crossref(new windwow)
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Effects of Hoehn-Yahr Scale on the Activation of Lower-Extremity Muscles during Walking with Parkinson's Patients, Korean Journal of Sport Biomechanics, 2014, 24, 3, 287  crossref(new windwow)
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