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https://doi.org/10.26582/k.50.2.10

Kinematics of Usain Bolt’s maximal sprint velocity

Milan Čoh ; University of Ljubljana Faculty of Sport, Slovenia
Kim Hébert-Losier ; University of Waikato, Faculty of Health, Sport, and Human Performance
Stanko Štuhec ; University of Ljubljana Faculty of Sport, Slovenia
Vesna Babić ; University of Zagreb, Faculty of Kinesiology, Croatia
Matej Supej ; University of Ljubljana Faculty of Sport, Slovenia

Puni tekst: engleski, pdf (2 MB) str. 172-180 preuzimanja: 979* citiraj
APA 6th Edition
Čoh, M., Hébert-Losier, K., Štuhec, S., Babić, V. i Supej, M. (2018). Kinematics of Usain Bolt’s maximal sprint velocity. Kinesiology, 50. (2.), 172-180. https://doi.org/10.26582/k.50.2.10
MLA 8th Edition
Čoh, Milan, et al. "Kinematics of Usain Bolt’s maximal sprint velocity." Kinesiology, vol. 50., br. 2., 2018, str. 172-180. https://doi.org/10.26582/k.50.2.10. Citirano 22.10.2019.
Chicago 17th Edition
Čoh, Milan, Kim Hébert-Losier, Stanko Štuhec, Vesna Babić i Matej Supej. "Kinematics of Usain Bolt’s maximal sprint velocity." Kinesiology 50., br. 2. (2018): 172-180. https://doi.org/10.26582/k.50.2.10
Harvard
Čoh, M., et al. (2018). 'Kinematics of Usain Bolt’s maximal sprint velocity', Kinesiology, 50.(2.), str. 172-180. https://doi.org/10.26582/k.50.2.10
Vancouver
Čoh M, Hébert-Losier K, Štuhec S, Babić V, Supej M. Kinematics of Usain Bolt’s maximal sprint velocity. Kinesiology [Internet]. 2018 [pristupljeno 22.10.2019.];50.(2.):172-180. https://doi.org/10.26582/k.50.2.10
IEEE
M. Čoh, K. Hébert-Losier, S. Štuhec, V. Babić i M. Supej, "Kinematics of Usain Bolt’s maximal sprint velocity", Kinesiology, vol.50., br. 2., str. 172-180, 2018. [Online]. https://doi.org/10.26582/k.50.2.10

Sažetak
This study investigated the maximal sprint velocity kinematics of the fastest 100 m sprinter, Usain Bolt. Two high-speed video cameras recorded kinematics from 60 to 90 m during the men 100 m final at the IAAF World Challenge Zagreb 2011, Croatia. Despite a relatively slow reaction time (194 ms), Bolt won in 9.85 s (mean velocity:10.15 m/s). His fastest 20-m section velocity was 12.14 m/s, reached between 70 and 90 m, by 2.70-m long strides and 4.36 strides/s frequency. At the maximal velocity, his contact and flight times were 86 and 145 ms, respectively, and vertical ground reaction force generated equalled 4.2 times his body weight (3932 N). The braking and propulsion phase represented 37% and 63% of ground contact, respectively, with his centre of mass (CoM) exhibiting minor reductions in horizontal velocity (2.7%) and minimal vertical displacement (4.9 cm). Emerged Bolt’s maximal sprint velocity and international predominance from coordinated motor abilities, power generation capacities, and effective technique. This study confirms that his maximal velocity was achieved by means of relatively long strides, minimal braking phase, high vertical ground reaction force, and minimal vertical displacement of CoM. This study is the first in-depth biomechanical analysis of Bolt’s maximal sprinting velocity with the segmental reconstruction.

Ključne riječi
100 m sprint; athletics; biomechanics; sport performance; sprint running

Hrčak ID: 207632

URI
https://hrcak.srce.hr/207632

Posjeta: 1.210 *