Modeling the expenditure and reconstitution of distance above critical speed during two swimming interval training sessions.

Autor: Raimundo JAG; Human Performance Research Group, College of Health and Sport Science, Santa Catarina State University, Santa Catarina, Brazil., De Aguiar RA; Human Performance Research Group, College of Health and Sport Science, Santa Catarina State University, Santa Catarina, Brazil., Lisbôa FD; Human Performance Research Group, College of Health and Sport Science, Santa Catarina State University, Santa Catarina, Brazil., Ribeiro G; Human Performance Research Group, College of Health and Sport Science, Santa Catarina State University, Santa Catarina, Brazil., Caputo F; Human Performance Research Group, College of Health and Sport Science, Santa Catarina State University, Santa Catarina, Brazil.
Jazyk: angličtina
Zdroj: Frontiers in physiology [Front Physiol] 2022 Sep 26; Vol. 13, pp. 952818. Date of Electronic Publication: 2022 Sep 26 (Print Publication: 2022).
DOI: 10.3389/fphys.2022.952818
Abstrakt: In swimming, the speed-time relationship provides the critical speed (CS) and the maximum distance that can be performed above CS (D'). During intermittent severe intensity exercise, a complete D' depletion coincides with task failure, while a sub-CS intensity is required for D' reconstitution. Therefore, determining the balance D' remaining at any time during intermittent exercise (D' BAL ) could improve training prescription. This study aimed to 1) test the D' BAL model for swimming; 2) determine an equation to estimate the time constant of the reconstitution of D' (τD'); and 3) verify if τD' is constant during two interval training sessions with the same work intensity and duration and recovery intensity, but different recovery duration. Thirteen swimmers determined CS and D' and performed two high-intensity interval sessions at a constant speed, with repetitions fixed at 50 m. The duration of passive recovery was based on the work/relief ratio of 2:1 (T2:1) and 4:1 (T4:1). There was a high variability between sessions for τD' (coefficient of variation of 306%). When τD' determined for T2:1 was applied in T4:1 and vice versa, the D' BAL model was inconsistent to predict the time to exhaustion (coefficient of variation of 29 and 28%). No linear or nonlinear relationships were found between τD' and CS, possibly due to the high within-subject variability of τD'. These findings suggest that τD' is not constant during two high-intensity interval sessions with the same recovery intensity. Therefore, the current D' BAL model was inconsistent to track D' responses for swimming sessions tested herein.
Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
(Copyright © 2022 Raimundo, De Aguiar, Lisbôa, Ribeiro and Caputo.)
Databáze: MEDLINE
Externí odkaz: