The importance of duration and magnitude of force application to sprint performance during the initial acceleration, transition and maximal velocity phases
von Lieres und Wilkau, Hans Christian
Bezodis, Neil E.
Morin, Jean Benoît
Taylor and Francis
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Successful sprinting depends on covering a specific distance in the shortest time possible. Although external forces are key to sprinting, less consideration is given to the duration of force application, which influences the impulse generated. This study explored relationships between sprint performance measures and external kinetic and kinematic performance indicators. Data were collected from the initial acceleration, transition and maximal velocity phases of a sprint. Relationships were analysed between sprint performance measures and kinetic and kinematic variables. A commonality regression analysis was used to explore how independent variables contributed to multiple-regression models for the sprint phases. Propulsive forces play a key role in sprint performance during the initial acceleration (r = 0.95 ± 0.03) and transition phases (r = 0.74 ± 0.19), while braking duration plays an important role during the transition phase (r = −0.72 ± 0.20). Contact time, vertical force and peak propulsive forces represented key determinants (r = −0.64 ± 0.31, r = 0.57 ± 0.35 and r = 0.66 ± 0.30, respectively) of maximal velocity phase performance, with peak propulsive force providing the largest unique contribution to the regression model for step velocity. These results clarified the role of force and time variables on sprinting performance.
Journal of Sport Sciences;
von Lieres Und Wilkau, H.C., Bezodis, N.E., Morin, J.B., Irwin, G., Simpson, S. and Bezodis, I.N. (2020) 'The importance of duration and magnitude of force application to sprint performance during the initial acceleration, transition and maximal velocity phases', Journal of Sports Sciences, pp.1-8.
Article published in Journal of Sports Sciences on 06 July 2020, available at: https://doi.org/10.1080/02640414.2020.1785193.
Cardiff Metropolitan University (Grant ID: Cardiff Metropolian (Internal))
This work was supported by the Cardiff Metropolitan University; Sport Wales; Welsh Athletics.
- Sport Research Groups 
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