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논문 기본 정보

자료유형
학술저널
저자정보
Lee, Jiseop (Department of Physical Education, Seoul National University) Song, Junkyung (Department of Physical Education, Seoul National University) Ahn, Jooeun (Department of Physical Education, Seoul National University) Park, Jaebum (Department of Physical Education, Seoul National University)
저널정보
한국운동역학회 한국운동역학회지 한국운동역학회지 제27권 제2호
발행연도
2017.1
수록면
83 - 90 (8page)

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Objective: To investigate the effect of short-term vibration frequencies on muscle force generation capabilities. Method: Six healthy participants were recruited for this study and only their dominant leg was tested. The subjects were tested under five conditions of vibration frequencies with constant amplitude: 0 Hz (no vibration), 30 Hz, 60 Hz, and 90 Hz, and the vibration amplitude was 10 mm for all frequency conditions. The vibration was applied to the rectus femoris (RF). The subjects were then instructed to maintain a steady-state isometric knee joint torque (100 Nm) for the first 6 s. After the steady-state torque production, the subjects were required to produce isometric knee joint torque by leg extension as hard as possible with a start signal within the next 3 s. The vibration was applied for ~4 s starting from 1 s before initiation of the change in the steady-state knee joint torque. Results: The results showed that the maximum voluntary torque (MVT) of the knee joint increased with the vibration frequencies. On average, the MVTs were 756.47 Nm for 0 Hz (no vibration) and 809.61 Nm for 90 Hz. There was a significant positive correlation (r = 0.71) between the MVTs and integrated electromyograms (iEMGs). Further, the co-contraction indices (CCIs) were computed, which represent the ratio of the iEMGs of the antagonist muscle to the iEMGs of all involved muscles. There was a significant negative correlation (r = 0.62) between the CCIs and MVTs, which was accompanied by a significant positive correlation (r = 0.69) between the iEMGs of the vibrated muscle (RF). There was no significant correlation between the MVTs and iEMGs of the antagonist muscle. Conclusion: The results of this study suggest that the short-term vibration on the muscle increases the level of muscle activation possibly owing to the increased Ia afferent activities, which enhances the muscle force generation capability.
#Short-term muscle vibration #Maximum isometric voluntary torque #Ia-afferent #Co-contraction

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참고문헌 (33)

참고문헌 신청
Arpinar-Avsar, P. / 2013 / Effects of muscle vibration on multi-finger interaction and coordination / Experimental Brain Research 229(1):103~111 google schola Arcangel, C. S. / 1971 / The achilles tendon reflex and the H-response during and after tendon vibration / Physical Therapy 51(8):889~905 google schola Basmajian, J. V. / 1985 / Muscles alive: their functions revealed by electromyography / Williams & Wilkins google schola 백승국 / 2006 / 표면근전도를 이용한 진동운동기의 근수축 효과에 관한 연구 / 한국운동역학회지 16(2):55~64 dbpia Barthélémy, A. / 2016 / Gait-like vibration training improves gait abilities: a case report of a 62-year-old person with a chronic incomplete spinal cord injury / Spinal Cord Series and Cases 2 google schola

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