지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록· 키워드
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The purpose of this study was to investigate the effects of different saddle heights on lower-limb joint angle and muscle activity. Six elite cyclists(age: $32.2{\pm}5.2years$, height: $171.0{\pm}3.5cm$, weight: $79.7{\pm}5.6kg$, cycle career: $13{\pm}6.2years$) participated in three min. submaximal(90 rpm) pedaling tests with the same load and cadence based on saddle heights where subject's saddle height was determined by his knee flexion angle when the pedal crank was at the 6 o'clock position. Joint angles(hip, knee, ankle joints) and the activity of lower limb muscles(biceps femoris(BF), vastus lateralis(VL), tibialis anterior(TA) and gastrocnemius medial(GM)) were compared by measuring 3D motion and electromyography(EMG) data. Results showed that there were significant differences in minimum hip & knee joint angle and range of motion of hip and knee joint between saddle heights. Onset timing and integrated EMG of only BF among 4 muscles were significantly different between saddle heights. Especially there was a negative relationship between minimum hip joint angle and onset timing of BF in most subject, which means that onset timing of BF became fast as the degree of bending of the hip joint became larger by saddle height. Optimal pedaling will be possible through increased amount of muscle activation due to the appropriate burst onset timing by proper pedaling posture with adjusted saddle height.
목차
등록된 정보가 없습니다.
참고문헌 (26)
참고문헌 신청
Asplund, C. / 2004 / Knee pain and bicycling / The Physician and Sports Medicine 32(4)
Albertus-Kajee, Y. / 2010 / Alternative methods of normalising EMG during cycling / Journal of Electromyography and Kinesiology 20(6):1036~1043
Baum, B. S. / 2003 / Lower extremity muscle activities during cycling are influenced by load and frequency / Journal of Electromyography and Kinesiology 13(2):181~190
Bini, R. R. / 2011 / Effects of saddle height on pedal force effectiveness / Procedia Engineering: 5th Asia Pacific Congress on Sports Technology 13:51~55
Burke, E. R. / 2003 / High-tech cycling / Human Kinetics :45~90
Albertus-Kajee, Y. / 2010 / Alternative methods of normalising EMG during cycling / Journal of Electromyography and Kinesiology 20(6):1036~1043
Baum, B. S. / 2003 / Lower extremity muscle activities during cycling are influenced by load and frequency / Journal of Electromyography and Kinesiology 13(2):181~190
Bini, R. R. / 2011 / Effects of saddle height on pedal force effectiveness / Procedia Engineering: 5th Asia Pacific Congress on Sports Technology 13:51~55
Burke, E. R. / 2003 / High-tech cycling / Human Kinetics :45~90
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