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The Journal of Sports Medicine and Physical Fitness 2021 Feb 15

DOI: 10.23736/S0022-4707.21.12064-X

Copyright © 2021 EDIZIONI MINERVA MEDICA

language: English

Predicting the individual lactate minimum speed by T10 and T30 in swimming

Rafael C. de MORAES 1, Augusto C. BARBOSA 2 , Renato BARROSO 1, Marcelo PAPOTI 3, Emilson COLANTONIO 4, Orival ANDRIES JÚNIOR 1

1 Department of Sports Science, School of Physical Education, University of Campinas, Campinas, Brazil; 2 Meazure Sport Sciences, Sao Paulo, Brazil; 3 School of Physical Education and Sport of Ribeirão Preto, University of Sao Paulo, Ribeirão Preto, Brazil; 4 Movement Sciences Department, Physical Education Course, Federal University of São Paulo, Santos, Brazil


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BACKGROUND: This study investigated the relationship between the lactate minimum (LACmin) and the 10- (T10) and 30-min (T30) continuous tests in swimmers.
METHODS: Twelve swimmers (78.1 ± 3.1% of world record) performed the LACmin (hyperlactatemia: 2 x 50 m all-out 8-min apart, incremental part: n x 300 m 30-s apart), T30 and T10 using the front-crawl stroke. Blood samples were collected after each stage of LACmin for lactate analysis. Swimmers were oriented to swim as fast and as constant as possible in T10 and T30.
RESULTS: Speeds in T10 (1.28 ± 0.10 m/s) and T30 (1.21 ± 0.09 m/s) were different from LACmin (1.24 ± 0.09 m/s). T10 and T30 speeds presented a nearly perfect relationship with LACmin and acceptable prediction errors (T10: r = 0.938, p < 0.001, 0.033 m/s; T30: r = 0.927, p < 0.001, 0.036 m/s, respectively).
CONCLUSIONS: T10 and T30 can be used as indirect tests for evaluating LACmin in swimming.


KEY WORDS: Endurance; Performance; Testing; Physiology

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