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Related Experiment Videos

Effect of training load on OBLA determination.

R Dotan1, A Rotstein, A Grodjinovsky

  • 1Department of Life Sciences & Sports Medicine, Zinman College of Physical Education, Wingate Institute, Israel.

International Journal of Sports Medicine
|October 1, 1989
PubMed
Summary

Heavy training may alter objective measures of runner performance, potentially impacting the reliability of lactate threshold testing. Controlling training load is crucial for accurate assessment, especially for less experienced athletes.

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Area of Science:

  • Exercise Physiology
  • Sports Science
  • Performance Analysis

Background:

  • Assessing physiological markers like the lactate threshold is vital for optimizing endurance athlete training.
  • The influence of preceding training load on objective performance measures is not fully understood.
  • Standardization of testing protocols is critical for reliable physiological assessments in athletes.

Purpose of the Study:

  • To investigate the impact of a heavy training week versus a light training week on objective measures of performance at the lactate threshold.
  • To determine if the training status affects the reliability of lactate threshold testing in male long-distance runners.

Main Methods:

  • Fifteen male long-distance runners underwent two lactate threshold (OBLA) tests under randomized conditions: post-light training and post-heavy training.

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  • Measured parameters included rating of perceived exertion (RPE), running economy (E), heart rate (HR), respiratory exchange ratio (R), and running velocity at OBLA.
  • Statistical analysis examined differences between conditions and correlations with baseline performance.

    • Main Results:

    • Heavy training increased RPE and running velocity at OBLA compared to light training.
    • Heart rate and running economy remained unchanged between training conditions.
    • A negative correlation was observed between the change in OBLA velocity and baseline OBLA velocity, suggesting higher-level runners are less affected.

    Conclusions:

    • The reliability of OBLA testing for assessing current performance capacity may be compromised by uncontrolled preceding training schedules.
    • Lack of standardization in training load prior to testing can influence results, particularly in less elite runners.
    • Higher-level runners may exhibit reduced susceptibility to variations in training load affecting OBLA test outcomes.