Tracking the performance, energetics and biomechanics of international versus national level swimmers during a competitive season
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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 (TP1, TP2, TP3) 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 TP1 and TP3. 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.
KeywordsPerformance Elite swimmers Biophysics profile Tracking Freestyle
The authors wish to thanks the support of all swimmers and coaches. Mário J Costa acknowledges the Portuguese Science and Technology Foundation (FCT) for the PhD grant (SFRH/BD/62005/2009).
The Institutional Review Board of the Polytechnic Institute of Bragança approved the study design. All subjects gave their informed consent prior to their inclusion in the study. The procedures were in accordance to the Declaration of Helsinki in respect to Human research.
Conflict of interest
The authors declare that they have no conflict of interest.
- Costa AM, Silva AJ, Garrido ND, Louro H, Marinho DA, Marques MC, Breitenfeld L (2009) Angiotensin converting enzyme genotype affects skeletal muscle strength in elite athletes. J Sport Sci Med 8:410–418Google Scholar
- Costa MJ, Marinho DA, Reis VM, Silva AJ, Marques MC, Bragada JA, Barbosa TM (2010a) Tracking the performance of world-ranked swimmers. J Sports Sci Med 9:411–417Google Scholar
- Costa MJ, Marinho DA, Reis VM, Silva AJ, Marques MC, Bragada JA, Barbosa TM (2010b) Stability and prediction of 100-m breaststroke performance during the elite swimmers careers. In: Kjendlie PL, Stallman RK and Cabri J (eds) XIth International Symposium on Biomechanics and Medicine in Swimming, Oslo, pp 272–273Google Scholar
- Craig A, Pendergast D (1979) Relationships of stroke rate, distance per stroke and velocity in competitive swimming. Med Sci Sports Exerc 11:278–283Google Scholar
- Fernandes R, Billat V, Cruz A, Colaço P, Cardoso C, Vilas-Boas JP (2006) Does net energy of swimming affect time to exhaustion at the individual’s maximal oxygen consumption velocity? J Sports Med Phys Fit 46:373–380Google Scholar
- Figueiredo P, Zamparo P, Sousa A, Vilas-Boas JP, Fernandes RJ (2011) An energy balance of the 200 m front crawl race. Eur J Appl Physiol. doi: 10.1007/s00421-010-1696-z
- Hay J, Guimarães A (1983) A quantitative look at swimming biomechanics. Swim Tech 20:11–17Google Scholar
- Hellard P, Guimaraes F, Avalos M, Houel N, Hausswirth C, Toussaint JF (2010) Modeling the Association between Heart Rate Variability and Illness in Elite Swimmers. Med Sci Sports Exerc (in press)Google Scholar
- Madsen O (1983) Aerobic training: not so fast there. Swimming Tech 20:13–17Google Scholar
- Malina RM (2001) Adherence to physical activity from childhood to adulthood: a perspective forma tracking studies. Quest 53:346–355Google Scholar
- Mingheli F, Castro F (2006) Kinematics parameters of crawl stroke sprinting through a training season. In: Vilas-Boas JP, Alves F, Marques A (eds) Biomechanics and Medicine in Swimming X, Port J Sport Sci, Porto, pp 102–103Google Scholar
- Pendergast DR, Capelli C, Craig AB, di Pramperi PE, Minetti AE, Mollendorf J, Termin II, Zamparo P (2006) Biophysics in swimming. In: Vilas-Boas JP, Alves F, Marques A (eds) Biomechanics and medicine in swimming X, Porto, pp 185–189Google Scholar
- Reis J, Alves F (2006) Training induced changes in critical velocity and V4 in age group swimmers. In: Vilas-Boas JP, Alves F, Marques A (eds) Biomechanics and Medicine in Swimming X. Port J Sport Sci, Porto, pp 55–56Google Scholar
- Sánchez J, Arellano R (2002) Stroke index values according to level, gender, swimming style and event race distance. In: Gianikellis K (ed) XXth International Symposium on Biomechanics in Sports, Cáceres pp 56–59Google Scholar
- Sharp R, Vitelli C, Costill D, Thomas R (1984) Comparison between blood lactate and heart rate profiles during a season of competitive swim training. J Swim Res 1:17–20Google Scholar
- Termin B, Pendergast D (2000) Training using the stroke-frequency velocity relationship to combine biomechanical and metabolic paradigms. J Swim Res 14:9–17Google Scholar
- Troup J (1991) Aerobic characteristics of the four competitive strokes. In: Troup J (ed) International Center for Aquatic Research Annual, Studies by the International Center for Aquatic Research. US Swimming Press, Colorado Spring, pp 3–7Google Scholar