Physiological correlates with endurance running performance in trained adolescents

Area of Science:

• Exercise Physiology
• Sports Science
• Adolescent Athletics

Background:

• Middle-distance running performance in adolescents is influenced by various physiological factors.
• Understanding these factors is crucial for optimizing training and performance.

Purpose of the Study:

• To investigate the relationship between physiological variables and middle-distance running performance (800m and 1500m) in trained adolescent runners.
• To identify key physiological predictors of performance in young athletes.

Main Methods:

• Collected track performance times for 800m and 1500m from adolescent runners.
• Assessed physiological variables including peak oxygen uptake (VO2), running economy (RE), speed at peak VO2 (vV0(2peak)), anaerobic power, and blood lactate concentrations at fixed levels.
• Analyzed correlations between performance times and physiological measures.

Main Results:

• For boys' 800m, RE and vV0(2peak) were significant predictors. For girls' 800m, no variables were significant after controlling for age.
• For the 1500m, peak VO2, vV0(2peak), and running speed at 2.5 mmol/L blood lactate (v2.5) were significant predictors for both boys and girls.
• VO2 at 2.5 mmol/L blood lactate (VO2(2.5)) also correlated with 1500m time in girls.

Conclusions:

• Running speed at peak oxygen uptake (vV0(2peak)) and running economy (RE) are the strongest physiological correlates of middle-distance running performance in adolescents.
• Peak VO2 may contribute to performance, but its effect is largely encompassed by vV0(2peak).
• Specific physiological markers are critical for predicting performance in adolescent middle-distance runners.