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Explosive voluntary torque is related to whole-body response to unexpected perturbations

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journal contribution
posted on 27.11.2018, 11:48 by Fearghal Behan, Matthew PainMatthew Pain, Jonathan FollandJonathan Folland
Explosive torque has been demonstrated to relate to static balance. However, sports injuries occur dynamically and unpredictably, yet the relationship between explosive torque and balance response to dynamic perturbations is unknown. This study investigated the relationship between explosive torque of the plantar flexors and knee extensors and the centre of mass (COM) response to unexpected perturbations. Thirty-three healthy subjects (17 females, 16 males) were assessed for maximal and explosive isometric knee extension (KE) and plantar flexion (PF) torque and COM response (velocity (COMV), displacement (COMD)) to unexpected platform translations. Relationships between explosive torque and balance measures were investigated using Pearson's correlation and multiple regression. A negative relationship between PF explosive torque at 50, 100, and 150 ms and COMV at 300, 400, and 500 ms (r = −0.363 to −0.508, p ≤ 0.049), and COMD at 400 and 500 ms (r = −0.349 to −0.416, p ≤ 0.046) was revealed. A negative relationship between KE explosive torque at 50, 100, and 150 ms and COMV at 400 ms (r = −0.381 to −0.411, p ≤ 0.029) but not COMD was also revealed. Multiple regression found PF 100 ms predicted 17.3% of variability in COMD at 500 ms and 25.8% of variability in COMV at 400 ms. These results suggest that producing torque rapidly may improve COM response to unexpected perturbation.

Funding

Funding received from the Arthritis Research UK Centre for Sport, Exercise and Osteoarthritis.

History

School

  • Sport, Exercise and Health Sciences

Published in

Journal of Biomechanics

Citation

BEHAN, F., PAIN, M.T.G. and FOLLAND, J.P., 2018. Explosive voluntary torque is related to whole-body response to unexpected perturbations. Journal of Biomechanics, 81, pp.86-92.

Publisher

© Elsevier

Version

AM (Accepted Manuscript)

Publisher statement

This paper was accepted for publication in the journal Journal of Biomechanics and the definitive published version is available at https://doi.org/10.1016/j.jbiomech.2018.09.016.

Acceptance date

15/09/2018

Publication date

2018

ISSN

0021-9290

Language

en