Article Title

THE WEDGE EFFECTS ON VERTICAL FORCE-TIME CURVE INSTANTS AND ON BACKSTROKE START PERFORMANCE

Authors

Diogo Duarte
Kelly de Jesus
Pedro Gonçalves
Alexandre I.A. Medeiros
Ricardo J. Fernandes
João Paulo Vilas-Boas
Karla de Jesus

Category

Triathlon

Document Type

Paper

Abstract

This study compared vertical force and time at time reference points between backstroke start performed with and without wedge, and identified the relationships with 5 m start time. Ten swimmers (age 21.1 ± 5.36 years, stature 1.78 ± 0.04 m, body mass 72.82 ± 10.05 kg and mean 100 m backstroke performance of 59.67 ± 2.89 s) completed eight backstroke starts (four with and four without wedge) using the highest horizontal handgrip. An instrumented starting block recorded vertical force and time at the following points: (i) start signal; (ii) peak before hands-off; (iii) minimum at hands-off; and (iv) peak before take-off. Forces at instants after the start signal were greater when using the wedge and no relationships were observed between force, time at reference points and 5 m time. The wedge use can benefit vertical forces generation but not directly 5 m time.

Recommended Citation

Duarte, Diogo; de Jesus, Kelly; Gonçalves, Pedro; Medeiros, Alexandre I.A.; Fernandes, Ricardo J.; Vilas-Boas, João Paulo; and de Jesus, Karla (2017) "THE WEDGE EFFECTS ON VERTICAL FORCE-TIME CURVE INSTANTS AND ON BACKSTROKE START PERFORMANCE," ISBS Proceedings Archive: Vol. 35: Iss. 1, Article 286.
Available at: https://commons.nmu.edu/isbs/vol35/iss1/286