Document Type

Article

Language

eng

Format of Original

7 p.

Publication Date

10-2015

Publisher

Wiley

Source Publication

Scandinavian Journal of Medicine and Science in Sports

Source ISSN

0905-7188

Original Item ID

DOI: 10.1111/sms.12283

Abstract

During explosive movements and potentially injurious situations, the ability to rapidly generate torque is critical. Previous research has suggested that different phases of rate of torque development (RTD) are differentiately controlled. However, the extent to which supraspinal and spinal mechanisms predict RTD at different time intervals is unknown. RTD of the plantarflexors across various phases of contraction (i.e., 0–25, 0–50, 0–100, 0–150, 0–200, and 0–250 ms) was measured in 37 participants. The following predictor variables were also measured: (a) gain of the resting soleus H-reflex recruitment curve; (b) gain of the resting homonymous post-activation depression recruitment curve; (c) gain of the GABAergic presynaptic inhibition recruitment curve; (d) the level of postsynaptic recurrent inhibition at rest; (e) level of supraspinal drive assessed by measuring V waves; and (f) the gain of the resting soleus M wave. Stepwise regression analyses were used to determine which variables significantly predicted allometrically scaled RTD. The analyses indicated that supraspinal drive was the dominant predictor of RTD across all phases. Additionally, recurrent inhibition predicted RTD in all of the time intervals except 0–150 ms. These results demonstrate the importance of supraspinal drive and recurrent inhibition to RTD.

Comments

Accepted version. Scandinavian Journal of Medicine and Science in Sports, Vol. 25, No.5 (October 2015): 623-629. DOI. © 2014 John Wiley & Sons. Used with permission.

This is the peer reviewed version of the following article: "Spinal and Supraspinal Motor Control Predictors of Rate of Torque Development," Scandinavian Journal of Medicine and Science in Sports, Vol. 25, No.5 (October 2015): 623-629, which has been published in final form at DOI. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.

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