The three-dimensional impulse-response model: Modeling the training process in accordance with energy system-specific...

Area of Science:

• Exercise Physiology
• Sports Science
• Biomechanical Modeling

Background:

• Athletic training involves physiological adaptation to exercise stress, leading to performance improvements.
• Existing models simplify training load into a single metric, ignoring diverse responses to different exercise types.
• This simplification limits the accuracy of predicting training-induced performance changes.

Purpose of the Study:

• To propose a novel three-dimensional impulse-response model for athletic training.
• To address the limitations of current single-metric models in quantifying training stress.
• To provide a framework for accurately predicting performance adaptations based on energy system stress.

Main Methods:

• Developed a three-dimensional impulse-response model using three training load inputs.
• Utilized a three-parameter critical power model to represent stress on alactic, lactic, and aerobic energy systems.
• Defined three performance metrics as outputs corresponding to the energy system stresses.

Main Results:

• The proposed model quantifies training load across three distinct energy systems.
• It allows for a more nuanced understanding of the relationship between training stress and performance adaptation.
• The model moves beyond single-metric limitations of previous impulse-response approaches.

Conclusions:

• The three-dimensional model offers a more comprehensive approach to understanding athletic training responses.
• It provides a scientifically grounded and practically implementable method for quantifying training stress.
• This framework enhances the prediction of performance improvements by considering the distinct demands on the body's energy systems.