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A comparison of three W170 protocols

R T Withers, G J Davies, R G Crouch

    European Journal of Applied Physiology and Occupational Physiology
    |September 16, 1977
    PubMed
    Summary
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    This study found no significant difference in W170 scores across three exercise protocols for assessing aerobic fitness. These findings suggest exercise testing protocols may not impact W170 results.

    Area of Science:

    • Sports Medicine
    • Exercise Physiology
    • Cardiorespiratory Fitness

    Background:

    • The W170 test is a submaximal exercise test used to estimate aerobic capacity.
    • Different exercise protocols may influence W170 test results and subsequent aerobic fitness estimations.
    • Standardizing exercise protocols is crucial for reliable physiological assessments.

    Purpose of the Study:

    • To compare the W170 scores derived from three distinct submaximal exercise protocols.
    • To determine if variations in workload duration and rest periods affect W170 test outcomes.
    • To evaluate the reliability of different W170 protocols in assessing aerobic fitness.

    Main Methods:

    • Nine male participants completed three randomized exercise protocols: 2x6 min, 3x4 min, and 4x3 min workloads.

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  • Each protocol included specific rest intervals between exercise bouts.
  • Subjects underwent preliminary rides to acclimate to the testing procedures.

    • Main Results:

    • An analysis of variance revealed no statistically significant differences in W170 scores between the three protocols (p > 0.05).
    • Correlations between W170 scores from the protocols and actual VO2 max were weak (ranging from -0.142 to 0.040).
    • The correlation between actual VO2 max and predicted VO2 max using the Astrand-Ryhming nomogram was 0.723.

    Conclusions:

    • The choice of submaximal exercise protocol (2x6 min, 3x4 min, 4x3 min) does not significantly impact W170 test results.
    • W170 scores from these protocols show limited correlation with actual VO2 max, suggesting potential limitations in predicting maximal oxygen uptake.
    • The Astrand-Ryhming nomogram demonstrated a moderate correlation with actual VO2 max, indicating its utility in aerobic fitness estimation.