Running Velocity as a Methodological Factor in Footwear Testing: Fixed Versus Self-Selected Conditions

Area of Science:

• Biomechanics
• Sports Science
• Footwear Technology

Background:

• Running velocity is a key factor in footwear research, potentially influencing biomechanical outcomes.
• Previous studies often used standardized velocities, leaving uncertainty about effects at faster, self-selected speeds.

Purpose of the Study:

• To investigate if running velocity modifies biomechanical responses to different running shoes.
• To determine if shoe-specific effects differ between standardized and individually selected faster running velocities.

Main Methods:

• Twenty-two runners tested seven running shoes with varying cushioning and stiffness.
• Biomechanical data were collected using inertial measurement units at two distinct running velocities.
• Analysis focused on interactions between shoe conditions and running velocity for key parameters.

Main Results:

• No significant interactions between shoe condition and running velocity were found for the assessed biomechanical parameters.
• Higher running velocities generally increased the magnitude of measured biomechanical parameters.
• Relative shoe-specific biomechanical response patterns remained consistent across the tested velocities.

Conclusions:

• Individually preferred running velocities appear suitable for comparative footwear analysis in field settings.
• The findings support using self-selected speeds for evaluating relative shoe effects within the studied range.
• This has implications for more ecologically valid footwear testing methodologies.