Effects of Different Training-Intensity Distribution Models on Maximal Oxygen Uptake and Time-Trial Performance in...

Area of Science:

• Sports Science
• Exercise Physiology
• Performance Optimization

Background:

• Training intensity distribution (TID) models are crucial for endurance training.
• The comparative effectiveness of different TID models on key performance metrics is not well-established.

Purpose of the Study:

• To compare the effects of common TID models on maximal oxygen uptake (V̇o2max) and time-trial (TT) performance using a Bayesian network meta-analysis.
• To identify the most effective TID strategies for enhancing endurance athlete performance.

Main Methods:

• A Bayesian network meta-analysis of randomized controlled trials was conducted.
• Studies were systematically retrieved from major scientific databases.
• Risk of bias was assessed using the Cochrane tool.

Main Results:

• No TID model demonstrated a clear advantage over polarized training for improving V̇o2max or TT performance.
• Lactate threshold training (THR) showed the highest probability for optimizing V̇o2max.
• High-intensity interval training (HIT) was identified as the most likely model to enhance TT performance.

Conclusions:

• Coaches should individualize TID strategies based on athlete characteristics and sport-specific demands.
• THR and HIT are promising models for targeting V̇o2max and TT performance, respectively.
• Potential moderators like age, training status, and intervention duration warrant further investigation.