Changes in critical velocity and critical stroke rate during a 12 week swimming training period: A case study
The aim of this study was to analyse the evolution of critical velocity and critical stroke rate during 12 weeks of training in age group swimmers. Fourteen age group male swimmers took part in this investigation. The evaluation took place in two different trials. The first one was conducted at the beginning of the season and the second one after 12 weeks of training. For each subject the critical velocity and the critical stroke rate were determined in both trials. The main result was that critical velocity increased, whereas critical stroke rate decreased between the first and second trials. It seems that technical ability was improved during the 12 weeks of training. The swimmers were able to perform at the same physiological intensity at higher velocities and with less stroke rate. This information could help swimming coaches monitoring their training without expensive instruments.
Clipet B., Dekerle J., Pelayo P., Sidney M. Critical swimming speed and critical stroke rate in intermittent aerobic exercise. Proceedings of the IXth Symposium on Biomechanics and Medicine in Swimming. Ed: Chatard, J.C. Saint- Etienne: University of Saint-Etienne. 2003:313-317.
Dekerle J. The use of critical velocity in swimming. A place for critical stroke rate? Portuguese Journal of Sport Sciences. 2006;6(Supl.2):201-205.
Dekerle J., Pelayo P., Clipet B., Depretz S., Lefreve T., Sidney M. Critical speed does not represent the speed at maximal lactate steady state. International Journal of Sports Medicine. 2005; 26:53-58. https://doi.org/10.1055/s-2004-817854
Dekerle J., Sidney M., Hespel J.M., Pelayo P. Validity and reliability of critical speed, critical stroke rate, and anaerobic capacity in relation to front crawl swimming performances. International Journal of Sports Medicine. 2002; 23:93-98. https://doi.org/10.1055/s-2002-20125
Fernandes R., Vilas-Boas J.P. Critical velocity as a criterion for estimating aerobic training pace in juvenile swimmers. Biomechanics and Medicine in Swimming VIII. Eds: Keskinen, K., Komi, P. and Pitkanen, P. Jyvaskyla: Gummerus Printing. 1999;233-244.
MacLaren D.P., Coulson M. Critical swim speed can be used to determine changes in training status. Biomechanics and Medicine in Swimming VIII. Eds: Keskinen, K.L., Komi, P.V. and Hollander, A.P. Jyvaskyla: Grummerus Printing. 1999;227-232.
Marinho D., Vilas-Boas J.P., Keskinen K., Rodríguez F., Soares S., Carmo C., Vilar S., Fernandes R. Behaviour of the kinematic parameters during a time to exhaustion test at VO2max in elite swimmers. Journal of Human Movement Studies. 2006; 51:1-10.
Monod H., Scherer J. The work capacity of a synergic muscular group. Ergonomics. 1965; 8:329-338. https://doi.org/10.1080/00140136508930810
Nomura T., Shimoyama Y. The relationship between stroke parameters and physiological responses at the various swim speeds. Biomechanics and Medicine in Swimming IX. Eds: Chatard, J.C. Saint Etienne: Publications de l'Université de Saint Etienne. 2002 :355-360.
Pelayo P., Dekerle J., Delaporte B., Gosse N., Sidney M. Critical speed and critical stroke rate could be useful physiological and technical criteria for coaches to monitor endurance performance in competitive swimmers. Proceedings of XVIII International Symposium on Biomechanics in Sport. Eds: Sanders, R. and Hong, Y. Hong Kong: The Chinese University of Hong Kong. 2000:83-87.
Renoux J.C. Evaluating the time limit at maximum aerobic speed in elite swimmers. Training implications. Archives of Physiology and Biochemistry. 2001: 109(5):424-429. https://doi.org/10.1076/apab.109.5.424.8036
Wakayoshi K., Ikuta K., Yoshida T., Udo M., Moritani T., Mutoh Y., Miyashita M. Determination and validity of critical velocity as an index of swimming performance in the competitive swimmer. European Journal of Applied Physiology and Occupational Physiology. 1992; 64:153-157. https://doi.org/10.1007/BF00717953
Wakayoshi K., Yoshida T., Udo M., Harada T., Moritani T., Mutoh Y., Miyashita M. Does critical swimming velocity represent exercise intensity at maximal lactate steady state? European Journal of Applied Physiology and Occupational Physiology. 1993a:66, 90-95. https://doi.org/10.1007/BF00863406
Wakayoshi K., Yoshida T., Ykuta Y., Mutoh Y., Miyashita M. Adaptations to six months of aerobic swim training. Changes in velocity, stroke rate, stroke length and blood lactate. International Journal of Sports Medicine. 1993b;14(7):368-372. https://doi.org/10.1055/s-2007-1021194
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