Moderate Load Resisted Sprints do Not Improve Subsequent Sprint Performance in Varsity Level Sprinters


Resisted sprint training (RST) is most widely used for performance enhancement in athletics and team sport to come up with equilibrium ability. Evidence shows that RST could succeed as a short term intervention to improve consecutive sprints. While these improvements are measured in team sport athletes, limited studies have considered the severe outcomes of RST trained in sprint-trained athletes. Thereforethe purpose of the current research was to determine if performing RST with varsity level sprinters using sled-equivalent resistive loads of ∼45 percent body mass results in a potentiation effect, leading to developments in succeeding maximal sprint functionality over 0-5 m and 0-20 m. Aggressive sprinters (n=20), were randomly assigned to perform a pre/post maximal 20 m sprint separated by either 3 obliterated (RST team ) or un-resisted (URS group) sprints. The RST or URS protocol was performed on four times separated by at least 7 days. No important differences were observed between the RST and URS groups comparing fluctuations in sprint occasions over 0-5 m (URS Δ = <0.01 s ± 0.03 therefore, RST Δ = <0.01 s ± 0.03 s) and 0-20 m (URS Δ = 0.013 s ± 0.04 therefore, RST Δ = <0.01 s ± 0.04 s). We conclude that resisted sprints using sled equal tons of 45% body mass are unsuccessful at inducing a potentiating effect on subsequent sprint performance in varsity level sprinters. In this people of athletes, greater loads may be essential to induce a potentiating effect.
This study was supported with a Mitacs Accelerate grant, in collaboration with the Speed River TFC. (IT08409)
Copyright © 20-19 by the National Strength & Conditioning Association.
Corresponding Author: Jamie F. Burr, University of Guelph, HHNS, ANNU, 50 Stone Road East, Guelph, ON, Canada, N1G 2W1, Tel: 1-519-824-4120 ext. 52591, Fax: 1-519-763-5902, Mail: burrj@uoguelph.ca

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