원문정보
넙다리네갈래근의 등속성 및 등척성 운동에서 구두명령 크기에 따른 근 활성도와 근력에 미치는 영향
초록
영어
Purpose: The purpose of this study was to investigate the effects of muscle activity and muscle strength according to verbal command volume during isokinetic and isometric quadricep exercises. Methods: To measure muscle activity and muscle strength, surface electrodes were attached to the participants, as they sat on a Biodex chair. The isometric exercise was performed three times, with maximum exercise at 30° bending angle, based on a maximum extension state of the knee at 0°. The average holding time was unified to three seconds. In addition, the isokinetic exercise was performed three times, at 60°/sec. The verbal command ranged between 0∽60 dB and 0∽75 dB. Muscle activity was measured using surface electromyography (4D-MT, Relive, Gimhae, Korea). The Biodex System 4 was used to measure the isometric and isokinetic strength of the nodal line, and 4D-MT was used to measure muscle activity. Results: There were significant improvements in the maximal and relative muscle strengths, when the 0∽ 60 dB and 0∽75 dB verbal commands were applied with isokinetic extension/flexion (p<.05). The isokinetic exercise (0∽75 dB) group showed a significant difference in the vastus medialis oblique muscle activity change (p<.05), while the isometric exercise (0∽75 dB) group showed a significant difference in the rectus femoris muscle activity change (p<.05). Conclusions: Our results reveal that verbal commands effectively improve muscle activity and muscle strength during isokinetic and isometric quadricep exercises.
목차
Ⅰ. 서론
Ⅱ. 연구 방법
1. 연구 대상자
2. 연구방법
3. 측정도구 및 실험도구
4. 자료분석
Ⅲ. 연구 결과
1. 연구 대상자의 일반적 특성
2. 등속성 운동에서 근활성도 전·후 비교
3. 등척성 운동에서 근활성도 전·후 비교
4. 넙다리네갈래근의 최대근력 전·후 비교
5. 넙다리네갈래근의 상대근력 전·후 비교
6. 구두명령의 크기에 따른 넙다리네갈래근의 근력과 근 활성도의 군간 비교
Ⅳ. 고찰
Ⅴ. 결론
참고문헌