Comparison of Biomechanical Characteristics for the Skill Level in Cycle Pedaling

Title & Authors
Comparison of Biomechanical Characteristics for the Skill Level in Cycle Pedaling
Lee, Geun-Hyuk; Kim, Jai-Jeong; Kang, Sung-Sun; Hong, Ah-Reum; So, Jae-Moo;

Abstract
Objective: This study aimed to compare biomechanical data between elite and beginner cyclists during cycle pedaling by performing a comparative analysis and to provide quantitative data for both pedaling performance enhancement and injury prevention. Methods: The subjects of this study included 5 elite cyclists (age: $\small{18{\pm}0years}$, body mass: $\small{64.8{\pm}9.52kg}$, height: $\small{173.0{\pm}4.80cm}$) and 5 amateur cyclists (age: $\small{20{\pm}0years}$, mass: $\small{66.6{\pm}2.36kg}$, height: $\small{175.6{\pm}1.95cm}$). The subjects pedaled on a stationary bicycle mounted on rollers of the same gear (front: 50 T and rear: 17 T = 2.94) and cadence of 90. The saddle height was adjusted to fit the body of each subject, and all the subjects wore shoes with cleats. In order to obtain kinematic data, 4 cameras (GR-HD1KR, JVC, Japan) were installed and set at 60 frames/sec. An electromyography (EMG) system (Telemyo 2400T, Noraxon, USA) was used to measure muscle activation. Eight sets of data from both the left and right lower extremities were obtained from 4 muscles (vastus medialis oblique [VMO], vastus lateralis oblique [VLO], and semitendinosus [Semitend], and lateral gastrocnemius [Gastro]) bilaterally by using a sampling frequency of 1,500 Hz. Five sets of events ($\small{0^{\circ}}$, $\small{90^{\circ}}$, $\small{180^{\circ}}$, $\small{270^{\circ}}$, and $\small{360^{\circ}}$) and 4 phases (P1, P2, P3, and P4) were set up for the data analysis. Imaging data were analyzed for kinematic factors by using the Kwon3D XP computer software (Visol, Korea). MyoResearch XP Master Edition (Noraxon) was used for filtering and processing EMG signals. Results: The angular velocity at $\small{360^{\circ}}$ from the feet was higher in the amateur cyclists, but accelerations at $\small{90^{\circ}}$ and $\small{180^{\circ}}$ were higher in the elite cyclists. The amateur cyclists had greater joint angles at $\small{270^{\circ}}$ from the ankle and wider knee joint distance at $\small{0^{\circ}}$, $\small{180^{\circ}}$, and $\small{360^{\circ}}$ than the elite cyclists. The EMG measurements showed significant differences between P2 and P4 from both the right VLO and Semitend. Conclusion: This study showed that lower body movements appeared to be different according to the level of cycle pedaling experience. This finding may be used to improve pedaling performance and prevent injuries among cyclists.
Keywords
Cycle;Pedaling;Cycle pedaling;Skill level;EMG;
Language
English
Cited by
References
1.
Abdel-Aziz, Y. & Karara, H. M. (1971). Direct linear transformation into object space coordinates in close-range photogrammetry, in proc. symp. close-range photogrammetry. Urbana-Champaign, 1-18.

2.
Atkinson, G., Peacock, O., Gibson, A. S. C. & Tucker, R. (2007). Distribution of power output during cycling. Sports Medicine, 37(8), 647-667.

3.
Bailey, M. P., Maillardet, F. J. & Messenger, N. (2003). Kinematics of cycling in relation to anterior knee pain and patellar tendinitis. Journal of Sports Sciences, 21(8), 649-657.

4.
Dorel, S., Drouet, J. M., Couturier, A., Champoux, Y. & Hug, F. (2009). Changes of pedaling technique and muscle coordination during an exhaustive exercise. Medicine+ Science in Sports+ Exercise, 41(6), 1277.

5.
Han, W. S. (2013). Sport science: Cycle fitting and Sport science. Sport Science, 124(0), 46-55.

6.
Holmes, J. C., Pruitt, A. L. & Whalen, N. J. (1994). Lower extremity overuse in bicycling. Clinics in Sports Medicine, 13(1), 187-203.

7.
Kang, D. W., Choi, J. S., Seo, J. W., Bae, J. H. & Tack, G. R. (2012). A study on trajectory and angle of knee joint in sagittal and Frontal plane during cycle pedaling. Korean Journal of Sport Science, 23(4), 794-801.

8.
Lucia, A. L. E. J. A. N. D. R. O., Hoyos, J. E. S. U. S. & Chicharro, J. L. (2001). Preferred pedalling cadence in professional cycling. Medicine and science in sports and exercise, 33(8), 1361-1366.

9.
Matsumoto, S., Tokuyasu, T. & Ohba, K. (2009). A study on postural optimization for bicycle exercise based on electromyography. Artificial Life and Robotics, 14(2), 144-149.

10.
Park, C. H., Kwak, Y. S. & Kim, T. U. (2010) Triathlon-related overuse injury and medical issues. Journal of Life Science, 20(2), 314-320.

11.
Pruitt, A. L. & Matheny, F. (2006). Andy Pruitt S Complete Medical Guide for Cyclists. VeloPress.

12.
Sanner, W. H. & O'Halloran, W. D. (2000). The biomechanics, etiology, and treatment of cycling injuries. Journal of the American Podiatric Medical Association, 90(7), 354-376.

13.
Seo, J. W., Choi, J. S., Kang, D. W., Bae, J. H. & Tack, G. R. (2012). Relationship between lower-limb joint and muscle activity due to saddle height during cycle pedaling. Korean Journal of Sport Biomechanics, 22(3), 357-363.

14.
Shin, E. S. & Kim, H. J. (2008). Electromyographic analysis of a uphill propulsion of a bicycle by forward . backward pedaling. Korean Journal of Sport Biomechanics, 18(4), 171-177.

15.
Yuk, S. S., Kim, T. Y, & Yoo. K. S. (2002). Kinematic and electromyographic analysis of lower limb to cycling. Journal of Sport and Leisure Studies, 18(2), 1231-1243.