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The relationship between 3 km running performance and selected physiological variables

S Grant1, I Craig, J Wilson

  • 1Institute of Biomedical and Life Sciences, University of Glasgow, UK.

Journal of Sports Sciences
|August 1, 1997
PubMed
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For well-trained male runners, the velocity at lactate threshold is the key predictor of 3 km running performance. This physiological marker alone explains most of the variability in 3 km race pace.

Area of Science:

  • Exercise Physiology
  • Sports Science
  • Running Performance Analysis

Background:

  • Understanding physiological determinants of running performance is crucial for training optimization.
  • Middle- and long-distance runners rely on a complex interplay of physiological factors to achieve peak performance.
  • Identifying key predictors can refine training strategies and enhance athlete potential.

Purpose of the Study:

  • To investigate the relationship between various physiological variables and 3 km running velocity (v-3km) in male runners.
  • To determine the best physiological predictor(s) of 3 km running performance.
  • To assess the predictive power of lactate threshold velocity (v-Tlac) and velocity at VO2 max (v-VO2max) on v-3km.

Main Methods:

  • Laboratory treadmill tests were conducted on 16 well-trained male runners.

Related Experiment Videos

  • Measurements included VO2 max, running economy, v-VO2max, v-Tlac, VO2-Tlac, v-4mM, and VO2-4mM.
  • 3 km time-trials were used to determine actual running performance (v-3km).

    • Main Results:

    • Velocity at lactate threshold (v-Tlac) and velocity at 4 mM blood lactate (v-4mM) were the strongest individual predictors of v-3km (r²=0.93).
    • Velocity at VO2 max (v-VO2max) showed a strong correlation (r=0.86) but was a weaker predictor than v-Tlac or v-4mM.
    • VO2 max and running economy did not show strong correlations with v-3km.
    • Multiple regression analysis indicated that v-Tlac alone explained 87% of the variability in v-3km, with no significant improvement from other variables.

    Conclusions:

    • Running velocity at the lactate threshold is a primary determinant of 3 km running performance in well-trained male runners.
    • VO2 max and running economy are less critical for predicting performance at this specific distance compared to lactate threshold markers.
    • Training interventions aimed at improving lactate threshold velocity may be most effective for enhancing 3 km race performance.