Using the power balance model to simulate cross-country skiing on varying terrain

Area of Science:

• Sports Science
• Biomechanics
• Physics

Background:

• Cross-country skiing performance is influenced by complex biomechanical and environmental factors.
• Accurate simulation models are crucial for understanding and optimizing athlete performance.

Purpose of the Study:

• To adapt and validate the power balance model for simulating cross-country skiing on varied terrain.
• To assess the model's ability to predict skier performance by comparing simulations with experimental data.

Main Methods:

• Adapted the power balance model, defining locomotive power as a function of speed.
• Incorporated variables such as friction, incline, air drag, and skier mass.
• Simulated an elite male skier's race and compared results with experimental data.

Main Results:

• Achieved a good fit between simulated and experimental race times, with a difference of only 2 seconds over 815 seconds.
• Demonstrated acceptable accuracy in both uphill and downhill skiing simulations.
• Quantified the impact of air drag, friction, and body mass on skiing performance.

Conclusions:

• The adapted power balance model is a valid and effective tool for analyzing cross-country skiing performance.
• The model provides valuable insights into how various physical factors influence a skier's speed and endurance.
• This simulation approach can aid in optimizing training and equipment for cross-country skiers.