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학제간연구 과학기술학 뇌인지과학 기술정책 기타 복합학

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학술저널
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한국전문물리치료학회 한국전문물리치료학회지 한국전문물리치료학회지 제17권 제2호
발행연도
2010.1
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1 - 9 (9page)

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To develop effective training methods for strengthening a weakened quadriceps femoris muscle in hemiplegic patients, we examined the effects of maximal isometric contraction of the nonparalyzed knee joint on the electromyographic activities of the paralytic muscle. An electromyogram (EMG) was used to record the electromyographic activities of the paralytic quadriceps femoris muscle in 27 hemiplegic patients. The maximal isometric contraction was measured for each subject to normalize the electromyographic activities. The maximal isometric extension and flexion exercises were randomly conducted when the knee joint angles of the nonparalyzed knees were 0°, 45°, and 90°. The patients were encouraged to maintain maximal isometric contractions in both knee joints during each measurement, and three measurements were taken. A one-minute rest interval was given between each measurement to minimize the effects of muscle fatigue. An average from the three values was taken as being the root mean square of the EMG and was recorded as being the maximal isometric contraction. The electromyographic activity obtained for each measurement was expressed as a percentage of the reference voluntary contraction, which was determined using the values obtained during the maximal isometric contraction. The results of this study are summarized as follows: First, when the knee joint angle of the nonparalyzed knee was 0°, the electromyographic activities of the paralytic medial aspect of rectus femoris were related to measurement by a maximal isometric flexion exercise than by an extension exercise (p<.05). Second, when the knee joint angle of the nonparalyzed knee was 90°, the electromyographic activities of the paralytic lateral aspect ofrectus femoris were related to measurement by a maximal isometric flexion exercise than by an extension exercise (p<.05). The results show that myoelectrical activities of paralytic quardriceps were not related to measurement angles and exercise directions of the nonparalized knee joint. Studies on various indirect intervention to improve muscular strength of patients with nervous system disorders of the weakened muscle should be constantly conducted.
#Cross education #Electromyographic activities #Hemiplegic patient #Isometric exercise #Quadriceps femoris muscle.

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참고문헌 (26)

참고문헌 신청
Adler SS / 2008 / PNF in Practice: An illustrated guide. 3rd ed / Springer-Verlag : 7 ~ 9 google schola Bohannon RW / 1992 / Nature, reliability, and predictive value of muscle performance measures in patients with hemiparesis following stroke / Arch Phys Med Rehabil. 73 (8) : google schola Canning CG / 2000 / Abnormal muscle activation characteristics associated with loss of dexterity after stroke / J Neurol Sci. 176 (1) : 45 ~ 56 google schola Carr JH / 1985 / Investigation of a new motor assessment scale for stroke patients / Phys Ther. 65 (2) : 175 ~ 180 google schola Carr LJ / 1994 / Evidence for bilateral innervation of certain homologous motoneurone pools in man / J Physiol. 475 (2) : 217 ~ 227 google schola

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