Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
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©Journal of Sports Science and Medicine (2010) 09, 411 - 417

Research article
Tracking the Performance of World-Ranked Swimmers
Mário J. Costa1,3,4, Daniel A. Marinho2,4, Victor M. Reis3,4, António J. Silva3,4, Mário C. Marques2,4, José A. Bragada1,4, Tiago M. Barbosa1,4, 
Author Information
1 Department of Sport Sciences, Polytechnic Institute of Bragança, Bragança, Portugal
2 Department of Sport Sciences, University of Beira Interior, Covilhã, Portugal
3 Department of Sport Sciences, Exercise and Health, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
4 Research Centre in Sports Science, Health and Human Development, Vila Real, Portugal

Tiago M. Barbosa
✉ Department of Sport Sciences, Polytechnic Institute of Bragança Campus Sta. Apolónia, Apartado 1101, 5301-856 Bragança, Portugal
Email: barbosa@ipb.pt
Publish Date
Received: 31-03-2010
Accepted: 07-06-2010
Published (online): 01-09-2010
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ABSTRACT

Tracking the swimming performance is important to analyze its progression and stability between competitions and help coaches to define realistic goals and to select appropriate training methods. The aim of this study was to track world-ranked male swimmer’s performance during five consecutive seasons (from 2003/2004 to 2007/2008) in Olympic freestyle events. An overall of 477 swimmers and 2385 season best performances were analyzed. FINA’s male top-150 rankings for long course in the 2007-2008 season were consulted in each event to identify the swimmers included. Best performances were collected from ranking tables provided by the National Swimming Federations or, when appropriate, through an internet database (www. swimranking.net). Longitudinal assessment was performed based on two approaches: (i) mean stability (descriptive statistics and ANOVA repeated measures, followed by a Bonferroni post-hoc test) and; (ii) normative stability (Pearson Correlation Coefficient and the Cohen’s Kappa tracking index). Significant variations in the mean swimming performance were observed in all events between all seasons. Performance enhancement was approximately 0.6 to 1 % between seasons leading up to the Olympics and approximately 3 to 4 % for the overall time-frame analyzed. The performance stability based on overall time-frame was moderate for all freestyle events, except in the 50-m (K = 0.39 ± 0.05) where it was low. Self-correlations ranged between a moderate (0.30 ≤ r < 0.60) and a high (r ≥ 0.60) stability. There was also a performance enhancement during all five seasons analyzed. When more strict time frames were used, the analysis of swimming performance stability revealed an increase in the third season. So, coaches should have a long term view in what concerns training design and periodization of world-ranked swimmers, setting the third season of the Olympic Cycle as a determinant time frame, due to performance stability until Olympic Games season.

Key words: Longitudinal assessment, freestyle, swimming, elite swimmers


           Key Points
  • World-ranked swimmers’ performance increased each season by approximately 0.6 to 1% during the five consecutive seasons analyzed.
  • The stability of swimmers’ performance based on the overall Olympic cycle period was moderate.
  • Coaches should set the third season of the Olympic Cycle as a determinant milestone. In that specific season, performance turns out to be high when having the Olympic Games season as a main goal.
 
 
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