Longitudinal associations between anaerobic threshold and distance running performance

Area of Science:

• Exercise Physiology
• Sports Science
• Endurance Training

Background:

• Middle-distance runners undergo intensive training to improve performance.
• Assessing physiological adaptations like anaerobic threshold (AT) and maximal oxygen uptake (VO2max) is crucial for optimizing training protocols.

Purpose of the Study:

• To investigate longitudinal changes in AT and 10,000m running performance over a 4-month intensive training period.
• To determine the relationship between changes in VO2 AT, VO2max, and 10,000m run times.

Main Methods:

• 20 male middle-distance runners (19-23 years) participated in the study.
• Training involved high-intensity work and 60-90 minute AT-level running sessions twice weekly.
• Measurements of VO2 AT and VO2max were taken three times during the 4-month training intervention.

Main Results:

• Significant increases in VO2 AT and VO2max were observed due to the training program.
• Both VO2 AT and VO2max showed strong negative correlations with 10,000m run times.
• Improvements in VO2 AT were more strongly associated with enhanced 10,000m performance than VO2max increases.

Conclusions:

• Intensive training, including AT-level running, significantly improves AT and endurance performance in trained runners.
• Enhancements in AT, potentially linked to increased muscle respiratory capacity, play a critical role in improving distance running capabilities.
• The study highlights the importance of targeting AT improvements for optimizing middle-distance running performance.