주관절 굴곡 가도가 어깨 주위 근육의 활동전위에 미치는 영향: 편측 상지 고유수용성 신경근 촉진법 중심으로
Electromyographic Activity of Shoulder Muscles by Elbow Flexion Angle: During Unilateral Upper Extremity Proprioceptive Neuromuscular Facilitation Patterns
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Thirty normal adults were tested to measure the electrical activity of the anterior(AD), middle (MD), and posterior portion (PD)of the deltoid muscle and sternal portion of the pectoralis major muscle (PM)during the performance of four upperextremityPNF diagonal patterns with elbow flexion angle in 0°, 45°, and 90°. The PNF patterns in which these muscles function optimally have been theoretically advanced by Kabat and further described by Knott and Voss. They theorize that the MD shouldbemostactive with shoulder flexion, abduction, and external rotation (D2F); the PD with shoulder txtension, abduction, and internal rotation (DIE); the AD with shoulder flexion, adduction, and extension, abduction, and external ratation (DIE); the ADwithshoulder flexion, adduction, and external rotation (DIF); and the PM with shoulder extension, adduction and internal rotation (D2E). The patterns were performed through range of motion, with an isometric contraction performed in the shortenedrange. When the EMG activity of AD, MD, PD and PM in its optimal patterns was measured, it does not have significant difference among fixed elbow flexion angle 0°, 45°, and 90°(p<.05). In addition, suggestions were made for study of patients whoexhibitimbalance of muscle strength and have muscle weakness.
Abstract
Thirty normal adults were tested to measure the electrical activity of the anterior(AD), middle (MD), and posterior portion (PD)of the deltoid muscle and sternal portion of the pectoralis major muscle (PM)during the performance of four upperextremityPNF diagonal patterns with elbow flexion angle in 0°, 45°, and 90°. The PNF patterns in which these muscles function optimally have been theoretically advanced by Kabat and further described by Knott and Voss. They theorize that the MD shouldbemostactive with shoulder flexion, abduction, and external rotation (D2F); the PD with shoulder txtension, abduction, and internal rotation (DIE); the AD with shoulder flexion, adduction, and extension, abduction, and external ratation (DIE); the ADwithshoulder flexion, adduction, and external rotation (DIF); and the PM with shoulder extension, adduction and internal rotation (D2E). The patterns were performed through range of motion, with an isometric contraction performed in the shortenedrange. When the EMG activity of AD, MD, PD and PM in its optimal patterns was measured, it does not have significant difference among fixed elbow flexion angle 0°, 45°, and 90°(p<.05). In addition, suggestions were made for study of patients whoexhibitimbalance of muscle strength and have muscle weakness.