Association between elite swimmers’ force production and 100 m front crawl inter-lap pacing and kinematics
Metadata
Show full item recordEditorial
Frontiers
Materia
Tethered swimming Training Peak force Performance
Date
2023-05-26Referencia bibliográfica
Costa MJ, Santos CC, Ferreira F, Arellano R, Vilas-Boas J.P and Fernandes RJ (2023) Association between elite swimmers’ force production and 100 m front crawl inter-lap pacing and kinematics. Front. Sports Act. Living 5:1205800. doi: 10.3389/fspor.2023.1205800[https://doi.org/10.3389/fspor.2023.1205800]
Sponsorship
Portuguese Foundation for Science and Technology (FCT), I.P; UIDP/05913/2020Abstract
The present study aimed to analyse the associations between force production
and 100 m front crawl inter-lap pacing and kinematics. Eleven elite male
swimmers performed a 100 m front crawl maximal effort to collect 50 m lap
time (T50, s) and velocity (v, m·s−1) for pacing, stroke rate (SR), stroke length (SL)
and stroke index (SI) as kinematic variables. A 30 s tethered effort allowed to
determine the peak (Fpeak) and mean force (Fmean) as force production variables.
The relative change (Δ) between 50 m laps was also calculated for all measures.
A paired sample t-test was used to check differences between laps and Pearson
correlation coefficients allowed to quantify the associations between force and
remaining variables. The T50 increased from the first to the second lap (ΔT50 =
10.61%, p < 0.01, d = 2.68), while v (Δv = −5.92%, p < 0.01, d = 1.53), SR (ΔSR =
−6.61%, p < 0.01, d = 0.45) and SI (ΔSI = −4.92%, p = 0.02, d = 0.45) decreased.
SL remained unchanged between laps (ΔSL = 1.07%, p = 0.66, d = 0.08). No
associations were found between force production and most of Δ, with the only
exception being the reasonable good association between Fpeak and Δv (r = 0.62,
p = 0.04). Although both pacing and kinematics fall from the first to the second
sections of a 100 m front-crawl effort, the swimmers who exhibit higher Fpeak
show a more stable front crawl v between both 50 m laps.