Detail publikace

Intra- and inter-individual variability in the underwater pull-out technique in 200 m breaststroke turns

GONJO, T. OLSTAD, B. ŠŤASTNÝ, J. CONCEIÇÃO, A. SEIFERT, L.

Originální název

Intra- and inter-individual variability in the underwater pull-out technique in 200 m breaststroke turns

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The purpose of the present study was to investigate the intra- and inter-individual variability in arm-leg coordination during the underwater phase of the turn segment in 200 m breaststroke. Thirteen male swimmers were recruited and performed a 200 m breaststroke in a pre-calibrated 25 m pool. Sub-phases during the underwater segment were obtained using a notational analysis, and the mean velocity, displacement and duration during each sub-phase were obtained. A hierarchical cluster analysis (HCA) was performed using the analysed variables in all phases to identify inter-individual variability and random intra-individual variability. In addition, a linear mixed model (LMM: lap as a fixed effect and the participant as a random effect) was conducted to investigate systematic intra-individual variability. HCA identified three coordination patterns that were distinguished by the timing of the dolphin kick relative to the arm pull-out and the duration of the glide with arms at the side. All swimmers except one performed the arm pull-out after the dolphin kick. Nine swimmers maintained one coordination pattern, but other swimmers switched their coordination during the trial, particularly by shortening the duration of the glide with arms at the side. LMM showed a linear decrease (from the first to the last turn) in the time gap between the end of the dolphin kick and the start of the arm pull-out (a glide with the streamlined body position; F = 9.64, p = 0.034) and the glide duration with the arms at the side (F = 11.66, p = 0.015). In conclusion, both inter- and intra-individual variabilities during the underwater phase were evident in 200 m breaststroke turns, which were categorised into three patterns based on the timing of the dolphin kick and the duration of glides.

Klíčová slova

breastroke; swimming; coordination; pull-out

Autoři

GONJO, T.; OLSTAD, B.; ŠŤASTNÝ, J.; CONCEIÇÃO, A.; SEIFERT, L.

Vydáno

21. 3. 2023

Nakladatel

PUBLIC LIBRARY SCIENCE

Místo

SAN FRANCISCO

ISSN

1932-6203

Periodikum

PLOS ONE

Ročník

18

Číslo

3

Stát

Spojené státy americké

Strany od

1

Strany do

17

Strany počet

17

URL

https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0283234

Plný text v Digitální knihovně

http://hdl.handle.net/11012/209276

BibTex

@article{BUT183178,
  author="Tomohiro {Gonjo} and Bjørn H. {Olstad} and Jan {Šťastný} and Ana {Conceição} and Ludovic {Seifert}",
  title="Intra- and inter-individual variability in the underwater pull-out technique in 200 m breaststroke turns",
  journal="PLOS ONE",
  year="2023",
  volume="18",
  number="3",
  pages="1--17",
  doi="10.1371/journal.pone.0283234",
  issn="1932-6203",
  url="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0283234"
}