Details

Autor(en) / Beteiligte

• Barbosa, Tiago M.
• Chen, Simin
• Morais, Jorge E.
• Costa, Mário J.
• Batalha, Nuno

Titel

The changes in classical and nonlinear parameters after a maximal bout to elicit fatigue in competitive swimming

Ist Teil von

• Human movement science, 2018-04, Vol.58, p.321-329

Ort / Verlag

Netherlands: Elsevier B.V

Erscheinungsjahr

2018

Link zum Volltext

Quelle

Elsevier ScienceDirect Journals Complete

Beschreibungen/Notizen

• •The speed fluctuation increased significantly under fatigue.•There was a significant decrease in the fractal dimension and the entropy showed non-significant variations.•In swimming there are changes in the classical and nonlinear parameters under fatigue. The aim was to assess the effect of fatigue on linear and nonlinear parameters in swimming. Twenty-four fitness-oriented swimmers performed a maximal bout of 100 m at front-crawl to elicit fatigue. Before (pre-) and immediately after (post-test) the bout, participants swam an all-out 25 m to derive the speed fluctuation (dv), approximate entropy (ApEn) and fractal dimension (FD) from the speed-time series collected by a speedo-meter. Swim speed was 10.85% slower in the post-test than in the pre-test (p < .001, η2 = 0.72). There was an effect of the fatigue on the dv with a moderate effect size. The dv increased shifting the 95CI band from 0.116–0.134 to 0.140–0.161. The ApEn showed non-significant variations between the pre- and post-test having the 95CI of pre- and post-test overlapped (pre: 0.659–0.700; post: 0.641–0.682). The FD showed as well a significant variation (the 95CI moved from 1.954–1.965 to 1.933–1.951). It can be concluded that in swimming there are changes in classical and nonlinear parameters under fatigue.