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      • Health, Sport and Human Performance
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      • Health, Sport and Human Performance
      • Health, Sport and Human Performance Papers
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      Comparing cross-sectional and longitudinal tracking to establish percentile data and assess performance progression in swimmers

      Born, Dennis‑Peter; Rueger, Eva; Beaven, Christopher Martyn; Romann, Michael
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      Comparing cross-sectional and longitudinal tracking to establish percentile data and assess performance progression in swimm.pdf
      Accepted version, 1.290Mb
      DOI
       10.1038/s41598-022-13837-3
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      Permanent link to Research Commons version
      https://hdl.handle.net/10289/14967
      Abstract
      To provide percentile curves for short-course swimming events, including 5 swimming strokes, 6 race distances, and both sexes, as well as to compare diferences in race times between cross-sectional analysis and longitudinal tracking, a total of 31,645,621 race times of male and female swimmers were analyzed. Two percentile datasets were established from individual swimmers’ annual best times and a two-way analysis of variance (ANOVA) was used to determine diferences between cross-sectional analysis and longitudinal tracking. A software-based percentile calculator was provided to extract the exact percentile for a given race time. Longitudinal tracking reduced the number of annual best times that were included in the percentiles by 98.35% to 262,071 and showed faster mean race times (P< 0.05) compared to the cross-sectional analysis. This diference was found in the lower percentiles (1st to 20th) across all age categories (P< 0.05); however, in the upper percentiles (80th to 99th), longitudinal tracking showed faster race times during early and late junior age only (P< 0.05), after which race times approximated cross-sectional tracking. The percentile calculator provides quick and easy data access to facilitate practical application of percentiles in training or competition. Longitudinal tracking that accounts for drop-out may predict performance progression towards elite age, particularly for high-performance swimmers.
      Date
      2022
      Type
      Journal Article
      Publisher
      Nature Portfolio
      Collections
      • Health, Sport and Human Performance Papers [136]
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