Do 5% changes around maximal lactate steady state lead to swimming biophysical modifications?

Autor: Camila Coelho Greco, Jailton G. Pelarigo, Ricardo J. Fernandes, David R. Pendergast, Benedito Sérgio Denadai, João Paulo Vilas-Boas
Přispěvatelé: University Catholic Center of Quixadá – UNICATÓLICA, Metropolitan College of Grande Fortaleza – FAMETRO, University of Porto, Universidade Estadual Paulista (Unesp), State University of New York at Buffalo
Rok vydání: 2016
Předmět:
Zdroj: Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
ISSN: 1872-7646
Popis: Made available in DSpace on 2018-12-11T17:29:20Z (GMT). No. of bitstreams: 0 Previous issue date: 2016-10-01 Our purpose was to examine the swimming biophysical responses at velocities (v) of 97.5, 100 and 102.5% of the maximal lactate steady state (MLSS). Ten elite female swimmers performed three-to-five 30-min constant tests at imposed paces to determine 97.5, 100 and 102.5%MLSS v. Gas exchange, blood lactate concentration ([La-]), stroke rate (SR) and v were determined during each test. The v values at 97.5, 100 and 102.5%MLSS were 1.21 ± 0.07, 1.24 ± 0.07 and 1.27 ± 0.07 m.s−1, respectively. Oxygen uptake (V̇O2) and Pulmonary ventilation (V̇E) increased as function of v. SR and stroke length (v/SR = SL) increased as a function of v. All measured variables were constant as a function of time at 97.5%MLSS and 100%MLSS. At 102.5%MLSS SR increased (3.5%) and stroke length (SL) decreased (3.5%) as a function of time. While V̇O2 was constant at 102.5%MLSS, [La-] and V̇E increased as a function of time, suggesting hyperventilation, at v's of 97.5%MLSS and 100%MLSS swimmers completed the 30 min swim in spite of decreased SL and increased SR. However, the decrease in SL and increased SF were accompanied by increased [La-] and V̇E and resulted in the inability of most swimmers to complete the 30 min swim presumably due to fatigue at 102.5%MLSS. University Catholic Center of Quixadá – UNICATÓLICA, Quixadá Metropolitan College of Grande Fortaleza – FAMETRO Centre of Research Education Innovation and Intervention in Sport Faculty of Sport University of Porto Porto Biomechanics Laboratory LABIOMEP University of Porto Human Performance Laboratory Physical Education Department São Paulo State University – UNESP Center for Research and Education in Special Environments Department of Physiology and Biophysics State University of New York at Buffalo Human Performance Laboratory Physical Education Department São Paulo State University – UNESP
Databáze: OpenAIRE
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