A power equation for the sprint in speed skating

Area of Science:

• Sports Science
• Biomechanics
• Physics of Sports

Background:

• The start of a race is crucial for performance.
• High correlation observed between initial acceleration and final time in speed skating.
• Understanding power dynamics is key to optimizing speed skating performance.

Purpose of the Study:

• To explain the high correlation between initial acceleration and final time in speed skating using a power equation.
• To model the kinetics of power production and dissipation in speed skaters.
• To analyze the role of anaerobic energy distribution in short-duration speed skating events.

Main Methods:

• Analysis of 1988 Olympic Winter Games 500 m speed skating race data.
• Development of a power equation incorporating external power production, air, and ice friction.
• Measurement of aerobic and anaerobic power during supramaximal bicycle tests.
• Simulation of speed skater power production and dissipation to predict race times.

Main Results:

• A strong correlation (r = -0.75) was found between initial acceleration and final 500 m time.
• Simulated mean split times at 100 m were 10.57 s and final 500 m times were 37.82 s.
• A high correlation (r = 0.90) was observed between simulated and actual 500 m race times.
• Better sprinters liberate more energy at the start compared to lower-level skaters.

Conclusions:

• The distribution of available anaerobic energy is critical for short-duration speed skating events.
• Initial acceleration significantly impacts overall race performance.
• Power production and dissipation models can accurately predict speed skating performance.