Stroking Parameters during Continuous and Intermittent Exercise in Regional-Level Competitive Swimmers
Nenhuma Miniatura disponível
Data
2012-09-01
Autores
Oliveira, M. F. M.
Caputo, F.
Dekerle, J.
Denadai, B. S. [UNESP]
Greco, C. C. [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Georg Thieme Verlag Kg
Resumo
This study aimed to determine whether maximal lactate steady state (MLSS) represents a boundary above which not only physiological but also technical changes occur. on different days, 13 male swimmers (23 +/- 9 years) performed the following tests: 1) a 400-m all-out swim, to determine maximal aerobic speed (S-400); 2) a series of 30-min sub-maximal swims, to determine continuous MLSS (MLSSc), and; 3) a series of 12 x 150s sub-maximal swims, to determine intermittent MLSS (MLSSi). Stroke rate (SR), distance per stroke cycle (DS) and stroke index (SI) were analyzed at and above (102.5%) MLSSc and MLSSi. MLSSi (1.17 +/- 0.09 m.s(-1)) was significantly higher than MLSSc (1.13 +/- 0.08 m.s(-1)) while blood lactate concentration (mmol.L-1) was similar between the 2 conditions (4.3 +/- 1.1 and 4.4 +/- 1.5, respectively). The increase in SR and decreases in DS and SI were significant during MLSSi, 102.5% MLSSc and 102.5% MLSSi. During MLSSc, DS also decreased significantly (-3.6%) but with no change in SR or SI. Thus, stroking technique of regional-level competitive swimmers changes over time when they swim at or above MLSS. This is the case during both continuous and intermittent swimming, despite steady state blood lactate concentrations.
Descrição
Palavras-chave
swim technique, endurance, training, lactataemia
Como citar
International Journal of Sports Medicine. Stuttgart: Georg Thieme Verlag Kg, v. 33, n. 9, p. 696-701, 2012.