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Biblioteca Digital do IPG >
Escola Superior de Educação, Comunicação e Desporto (ESECD) >
Artigos em Revista Internacional (ESECD) >
Utilize este identificador para referenciar este registo:
http://hdl.handle.net/10314/3282
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| Título: | Tracking the performance, energetics and biomechanics of International versus National level swimmers during a competitive season. |
| Autores: | Costa, Mário
Bragada, José
Mejias, Jean
Louro, Hugo
Marinho, Daniel
Silva, António
Barbosa, Tiago |
| Data: | 2012 |
| Editora: | Springer |
| Citação: | COSTA MJ, BRAGADA JA, MEJIAS JE, LOURO H, MARINHO DA, SILVA, AJ, BARBOSA TM (2012) Tracking the performance, energetics and biomechanics of International versus National level swimmers during a competitive season. European Journal of Applied Physiology, 112(3): 811-820. |
| Resumo: | The purpose of this study was to track and compare the changes of performance, energetic and biomechanical profiles of international (Int) and national (Nat) level swimmers during a season. Ten Portuguese male swimmers (four Int and six Nat level subjects) were evaluated on three different time periods (TP(1), TP(2), TP(3)) of the 2009-2010 season. Swimming performance was assessed based on official time's lists of the 200-m freestyle event. An incremental set of 7 × 200 m swims was applied to assess the energetic and biomechanical data. Measurements were made of: (1) velocity at the 4 mmol of lactate levels (V4), stroke index at V4 (SI@V4) and propelling efficiency at V4 (η (p)@V4), as energetic estimators; (2) stroke length at V4 (SL@V4) and stroke frequency at V4 (SF@V4), as biomechanical variables. The results demonstrated no significant variations in all variables throughout the season. The inter-group comparison pointed out higher values for Int swimmers, with statistical differences for the 200 m performance in all time periods. Near values of the statistical significance were demonstrated for the SI@V4 in TP(1) and TP(3). The tracking based on K values was high only for the SI@V4. It is concluded that a high stability can be observed for elite swimmers performance, energetic and biomechanical profiles throughout a single season. Int swimmers are able to maintain a higher energetic and biomechanical capacity than Nat ones at all times. The SI@V4 may be used as an indicator of performance variation. |
| URI: | http://hdl.handle.net/10314/3282 |
| Aparece nas Colecções: | Artigos em Revista Internacional (ESECD)
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Ficheiros deste Registo:
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| 2012 Costa et al EJAP.pdf | | 402Kb | Adobe PDF | Ver/Abrir | |
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