Utilize este identificador para referenciar este registo: http://hdl.handle.net/10198/14972
Título: Contribution of limbs’ actions to the four competitive swimming strokes: a nonlinear approach
Autor: Bartolomeu, Raúl Filipe
Costa, M.J.
Barbosa, Tiago M.
Palavras-chave: Swimming
Dynamical systems
Nonlinear variables
Sample entropy
Fractal dimension
Data: 2018
Editora: Taylor & Francis
Citação: Bartolomeu, Raul Fernandes; Costa, M.J.; Barbosa, Tiago M. (2018) - Contribution of limbs’ actions to the four competitive swimming strokes: a nonlinear approach. Journal of Sports Sciences.
Resumo: The aim of our study was to assess the effect of the limbs’ actions on the nonlinear properties of the four competitive swimming strokes. Forty-nine swimmers performed all-out sprints at front-crawl, backstroke, breaststroke and butterfly, each one at full stroke (FS), only the arms’ stroke (AS), and only leg kicking (LK), in a total of 12 bouts, 6 per day. A speedo-meter cable was attached to the swimmer’s hip, to collect the speed-time raw data (f = 50Hz). Velocity, speed fluctuation, sample entropy and fractal dimension were derived from the speed-time series. Significant and moderate-strong effects were noted for both stroke and condition in all variables in the study (p ≤ 0.001; 0,560<η2 < 0,952). The four competitive strokes and their three conditions exhibited nonlinear properties. The swimming pattern was less complex and more predictable for LK in comparison to AS and FS. Breaststroke and butterfly have more complex but more predictable patterns than backstroke and front-crawl.
Peer review: yes
URI: http://hdl.handle.net/10198/14972
DOI: 10.1080/02640414.2018.1423608
ISSN: 1466-447X
Aparece nas colecções:ESE - Artigos em Revistas Indexados à WoS/Scopus

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