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A Rapidly Incremented Tethered-Swimming Maximal Protocol for Cardiorespiratory Assessment of Swimmers
09:24

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Published on: January 28, 2020

Different VO2max time-averaging intervals in swimming.

R J Fernandes1, K de Jesus, C Baldari

  • 1Centre of Research, Education, Innovation and Intervention in Sport, Faculty of Sport, University of Porto, Portugal. ricfer@fade.up.pt

International Journal of Sports Medicine
|July 14, 2012
PubMed
Summary
This summary is machine-generated.

Shorter sampling intervals, specifically 15 seconds or less, improve the identification of the oxygen uptake (VO2) plateau during swimming VO2max assessments. A 10-second interval with a 200-meter step protocol is recommended for optimal results.

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Area of Science:

  • Sports Science
  • Exercise Physiology
  • Swimming Performance Analysis

Background:

  • Accurate assessment of maximal oxygen uptake (VO2max) is crucial for evaluating athletic performance.
  • Identifying the VO2 plateau is key for a valid VO2max determination.
  • Standardizing sampling interval strategies in swimming VO2max testing is needed.

Purpose of the Study:

  • To investigate the impact of different sampling interval strategies on VO2max assessment in swimming.
  • To establish a standardized time-averaging method for improved VO2 plateau identification.
  • To compare VO2max measurements across various incremental swimming protocols and sampling intervals.

Main Methods:

  • Eleven trained male swimmers underwent intermittent incremental front crawl protocols to exhaustion.
  • Three protocols with varying step lengths (200m, 300m, 400m) were used.
  • Oxygen uptake (VO2) was measured directly, with six sampling intervals (beat-by-beat to 30-second averages) analyzed.

Main Results:

  • Shorter sampling intervals (≤15s) demonstrated a higher incidence of the VO2 plateau, irrespective of step length.
  • 200m and 300m step protocols yielded a greater VO2 plateau incidence and higher VO2max values compared to the 400m protocol.
  • The 10-second time-average interval showed optimal balance between VO2 plateau identification and protocol efficiency.

Conclusions:

  • A 10-second time-average sampling interval is recommended for VO2max assessment in swimming.
  • Utilizing a 200-meter step incremental protocol with a 10-second interval is suggested for practical application.
  • This approach enhances VO2 plateau identification and offers a time-efficient method for swimmers and coaches.