Energetic and Biomechanical Contributions for Longitudinal Performance in Master Swimmers.

Autor: Marinho DA; Department of Sport Sciences, University of Beira Interior, 6201-001 Covilhã, Portugal.; Research Centre in Sports, Health and Human Development, CIDESD, 6201-001 Covilhã, Portugal., Ferreira MI; Department of Sport Sciences, University of Beira Interior, 6201-001 Covilhã, Portugal.; Research Centre in Sports, Health and Human Development, CIDESD, 6201-001 Covilhã, Portugal., Barbosa TM; Research Centre in Sports, Health and Human Development, CIDESD, 6201-001 Covilhã, Portugal.; Department of Sport Sciences, Polytechnic Institute of Bragança, 5300-253 Bragança, Portugal., Vilaça-Alves J; Research Centre in Sports, Health and Human Development, CIDESD, 6201-001 Covilhã, Portugal.; Department of Sport Sciences, Exercise and Health Sciences, University of Trás-os-Montes and Alto Douro, 5001-801 Vila Real, Portugal., Costa MJ; Research Centre in Sports, Health and Human Development, CIDESD, 6201-001 Covilhã, Portugal.; Department of Sport Sciences, Polytechnic Institute of Guarda, 6300-559 Guarda, Portugal., Ferraz R; Department of Sport Sciences, University of Beira Interior, 6201-001 Covilhã, Portugal.; Research Centre in Sports, Health and Human Development, CIDESD, 6201-001 Covilhã, Portugal., P Neiva H; Department of Sport Sciences, University of Beira Interior, 6201-001 Covilhã, Portugal.; Research Centre in Sports, Health and Human Development, CIDESD, 6201-001 Covilhã, Portugal.
Jazyk: angličtina
Zdroj: Journal of functional morphology and kinesiology [J Funct Morphol Kinesiol] 2020 Jun 05; Vol. 5 (2). Date of Electronic Publication: 2020 Jun 05.
DOI: 10.3390/jfmk5020037
Abstrakt: Background: The current study aimed to verify the changes in performance, physiological and biomechanical variables throughout a season in master swimmers.
Methods: Twenty-three master swimmers (34.9 ± 7.4 years) were assessed three times during a season (December: M 1 , March: M 2 , June: M 3 ), in indoor 25 m swimming pools. An incremental 5 × 200 m test was used to evaluate the speed at 4 mmol·L -1 of blood lactate concentration (sLT), maximal oxygen uptake ( VO 2max ), peak blood lactate ([La-]peak) after the test, stroke frequency ( SF ), stroke length ( SL ), stroke index ( SI ) and propelling efficiency ( η p ). The performance was assessed in the 200 m front crawl during competition.
Results: Swimming performance improved between M 1 , M 2 (2%, p = 0.03), and M 3 (4%, p < 0.001). Both sLT and VO 2max increased throughout the season (4% and 18%, p < 0.001, respectively) but not [La-]peak. While SF decreased 5%, SL , SI and η p increased 5%, 7%, and 6% ( p < 0.001) from M 1 to M 3 .
Conclusions: Master swimmers improved significantly in their 200 m front crawl performance over a season, with decreased SF, and increased SL, η p and SI. Despite the improvement in energetic variables, the change in performance seemed to be more dependent on technical than energetic factors.
Databáze: MEDLINE
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