Effect of protocol on peak power output in continuous incremental cycle exercise tests.

Area of Science:

• Sports Science
• Exercise Physiology
• Biomechanical Engineering

Background:

• Peak power output (PPO) is a key performance indicator for cyclists.
• PPO is highly dependent on the specific incremental exercise test (EXT) protocol used.
• Understanding protocol dependency is crucial for accurate performance assessment.

Purpose of the Study:

• To develop a mathematical model to predict the effect of EXT design on PPO.
• To quantify differences in PPO across various EXT protocols.
• To establish a basis for comparing PPO results from different testing methods.

Main Methods:

• Utilized an adapted mathematical model to simulate EXT protocols.
• Compared model-predicted PPO differences (ΔPPO) with empirical data from sports science literature.
• Validated the model's accuracy across diverse cyclist performance levels.

Main Results:

• The model accurately predicted ΔPPO for 36 different EXT designs.
• Variations in stage duration (1-5 min) and power increments (10-50 W) significantly impacted PPO.
• Specific combinations (e.g., 15W/2min, 25W/3min, 40W/4min) yielded PPO values approximating maximal oxygen uptake.

Conclusions:

• The developed model enables direct comparison of PPO across disparate EXT protocols.
• Absolute cyclist performance level does not influence the ΔPPO.
• Identified specific EXT protocols (15W/2min, 25W/3min, 40W/4min) as valuable physiologic references for diagnostics and training prescription.