드롭 착지 시 탄소나노튜브 소재의 인솔 착용이 하지의 합성 관절 모멘트 및 근활성도에 미치는 영향
Effects of Wearing Carbon Nanotube-Based Insole on Resultant Joint Moment and Muscle Activity of the Lower Extremity During Drop Landing
0
조회
0
다운로드
4
인용
0
참고문헌
키워드
초록
본 연구의 목적은 드롭 착지동작 시 탄소나노튜브 소재의 충격흡수 인솔 착용에 따른 하지의 합성 관절 모멘트 및 근활성도를 분석하는데 있다. 본 연구를 위해 하지 근골격계에 이상이 없는 20대 남성 10명을 연구대상자로 선정하였다. 2대의 디지털 캠코더와 1대의 지면반력기를 사용하여 드롭 착지동작 시 탄소나노튜브(CNT) 소재의 인솔과 EVA 소재의 인솔 착용에 따른 3차원 동작분석과 합성 관절 모멘트를 산출하였으며, 5개의 표면전극을 우측 하지 근육에 부착하여 근활성도 분석을 실시하였다. 착용된 인솔의 종류에 따른 운동역학적 변인들의 통계적 유의차를 검증하기 위해 paired t-test를 실시하였으며, 유의성 수준은 p<.05로 설정하였다. 본 연구의 결과, 모든 합성 관절 모멘트에서는 인솔 착용에 따른 통계적 유의차가 나타나지 않았지만, 무릎관절의 신전근 모멘트에서 CNT 인솔 착용 조건이 EVA 인솔 착용 조건에 비해 상대적으로 감소한것으로 나타났다. 평균 및 최대 적분근전도에서는 두 조건 간 통계적 유의차가 나타나지 않았지만, 대퇴이두근을 제외한 모든 근육에서 CNT 인솔 착용 조건이 EVA 인솔 착용 조건에 비해 상대적으로 근육 활성이 감소한것으로 나타났다. 이러한 결과는 CNT 소재의 인솔 착용이 착지동작 시 무릎관절의 굴곡 동작을 적절히 제어하고, 발생되는 충격력을 감소시키는데 긍정적인 효과를 발생시키는 것으로 판단된다.
Abstract
The purpose of this study was to investigate effects of carbon nanotube-based insole on the resultant joint moment and muscle activity of the lower extremity during drop landing. Ten males with no known musculoskeltal disorders were recruited as the subjects. Two digital camcorders and one force plate were used to obtain 3-D kinematics and kinetics of the lower extremity. To assess the myoelectric activities of selected muscles, five surface electrodes were attached to the right side of the lower extremity. For each dependent variable, paired t-test was performed to test if significant difference existed between with carbon nanotube-based insole(CNT) and ethylene vinyl acetate-based insole(EVA) conditions(p<.05). The results showed that average and peak IEMG values from RF, TA, MG, and LG in CNT were lower than corresponding values in EVA. Although no significant difference in resultant joint moment was found between two conditions, a decrease in the knee extension moment was found with CNT. This indicates that wearing carbon nanotube-based insole may help to decrease impact force and to control excessive flexion movement of the knee joint during landing.
참고문헌 (21)
- 채원식, "탄소나노튜브를 기반으로 하는 충격흡수제의 물리적 특성 비교분석", 한국운동역학회지, 22(2), pp.237~242 (2012), 한국운동역학회[DOI]
- 진영완, "인솔 차이에 따른 런닝화의 운동역학적 비교", 한국운동역학회지, 17(2), pp.51~59 (2007), 한국운동역학회
- Abdel-Aziz, Y. I., "Direct linear transformation from comparator coordinates into object space coordinates in close-range photogrammetry", Photogrammetric Engineering & Remote Sensing, 81(2), pp.103~107 (2015)
- Boling, M. C., "Outcomes of a weight-bearing rehabilitation program for patients diagnosed with patellofemoral pain syndrome", Archives of Physical Medicine and Rehabilitation, 87(11), pp.1428~1435 (2006)
- Bosco, C., "Potentiation of myoelectrical activity of human muscles in vertical jumps", Electromyography and Clinical Neurophysiology, 22(7), pp.549~562 (1982)
- Cao, A., "Super-compressible foamlike carbon nanotube films", Science, 310(5752), pp.1307~1310 (2005)
- Devita, P., "Effect of landing stiffness on joint kinetics and energetics in the lower extremity", Medicine and Science in Sports and Exercise, 24(1), pp.108~115 (1992)
- Dufek, J. S., "The evaluation and prediction of impact forces during landings", Medicine and Science in Sports and Exercise, 22(2), pp.370~377 (1990)
- Ford, K. R., "Valgus knee motion during landing in high school femalee and male basketball players", Medicine and Science in Sports and Exercise, 35(10), pp.1745~1750 (2003)
- Hagins, M., "The effect of an inclined landing surface on biomechanical variables during a jumping task", Clinical Biomechanics, 22(9), pp.1030~1036 (2007)
- Hewett, T. E., "Decrease in neuromuscular control about the knee with maturation in female athletes", The Journal of Bone and Joint Surgery, 86(8), pp.1601~1608 (2004)
- Kaelin, X., "Shock absorption during landing after a jump", Biomechanics, XI-B, pp.685~688 (1988)
- Madigan, M. L., "Changes in landing biomechanics during a fatiguing landing activity", Journal of Electromyography and Kinesiology, 13(5), pp.491~498 (2003)
- Marquez, W. Q., "The effects of jumping distance on the landing mechanics after a volleyball spike", Sports Biomechanics, 8(2), pp.154~166 (2009)
- McNitt-Gray, J. L., "Kinetics of the lower extremities during drop landings from three heights", Journal of Biomechanics, 26(9), pp.1037~1046 (1993)
- Nigg, B. M., "On the potential of various approach in load analysis to reduce the frequency of sports injuries", Journal of Biomechanics, 23(1), pp.3~12 (1990)
- Olsen, O. E., "Injury mechanisms for anterior cruciate ligament injuries in team handball : a systematic video analysis", The American Journal of Sports Medicine, 32(4), pp.1002~1012 (2004)
- Shultz, S. J., "Methodological considerations of task and shoe wear on joint energetics during landing", Journal of Electromyography and Kinesiology, 22(1), pp.124~130 (2012)
- US Department of Health and Human Services., "Selected topics in surface electromyography for use in the occupational setting: expert perspectives" (1992), National Institute for Occupational Safety and Health.
- Valiant, G. A., "A study of landing from a jump: implications for the design of a basketball shoe", Biomechanics, IX-B, pp.117~122 (1985)
- Zhang, S. N., "Contributions of lower extremity joints to energy dissipation during landings", Medicine and Science in Sports and Exercise, 32(4), pp.812~819 (2000)