Author(s)

Zihui Zhang ¹

Affiliation(s)

¹ The Postgraduate School, Universitas Pendidikan Ganesha, Singaraja-Bali, 81116, Indonesia

Corresponding Author

Zihui Zhang

ABSTRACT

This study investigated the biomechanical characteristics of the push-off phase during the sprint start and its correlation with sports performance among 22 male 100-meter athletes from Wuhan Sports University. Using two high-speed cameras (250 Hz) and a force platform (1000 Hz) synchronized for data collection, we analyzed kinematic and kinetic parameters during the starting block phase and initial acceleration. Results indicated that reaction time (r=-0.72, p<0.01), horizontal velocity at take-off (r=0.68, p<0.01), and normalized average horizontal external power (NAHEP) (r=0.75, p<0.01) showed significant correlations with 100-meter performance. Furthermore, eccentric plantar flexion torque emerged as a primary contributor to propulsion during initial acceleration. Technical deficiencies identified included excessive trunk elevation angle in less proficient athletes and suboptimal step length configuration. These findings suggest that specific biomechanical parameters during the push-off phase significantly impact sprint performance and can inform targeted training interventions for improving start technique.

KEYWORDS

sprint start; push-off phase; biomechanics, kinematic parameters; running performance; acceleration phase

CITE THIS PAPER

Zihui Zhang, Biomechanical Characteristics of the Push-Off Phase in the Sprint Start of 100-Meter Athletes and Their Correlation with Sports Performance. Journal of Human Movement Science (2025) Vol. 6: 136-142. DOI: http://dx.doi.org/10.23977/jhms.2025.060119.

REFERENCES

[1] Walker J, Bissas A, Paradisis G P, et al. Kinematic factors associated with start performance in World-class male sprinters[J]. Journal of Biomechanics, 2021, 124: 110554.
[2] An W. Biomechanical characteristics of the 100-meter start and initial acceleration of second-level male athletes. Xi'an Physical Education University, 2018.
[3] Ciacci S, et al. Spatiotemporal parameters in sprint start performance. Journal of Applied Biomechanics, 2017, 34(2), 123-129.
[4] Majumdar A S, Robergs R A. The science of speed: Determinants of performance in the 100 m sprint[J]. International Journal of Sports Science & Coaching, 2011, 6(3): 479-493.
[5] Guo Z, Huang C & Guo M. Biomechanical analysis of start technique in collegiate hurdlers and sprinters. Journal of Taiwan Normal University, 2004, 49(1), 87-102.

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