Resisted Sprint Load Calculator
Enter your athlete's max velocity and body weight to get recommended resistance loads for each training zone. Designed for use with the T-APEX motorized sprint trainer.
Athlete Details
Recommended T-APEX Resistance Loads
How to Use These Recommendations
Heavy loads target maximal horizontal force production during early acceleration (0–20m). Use for short, maximal efforts with full recovery. Expect significant velocity loss (50%+ below max velocity).
Moderate loads develop force application during the transition from drive phase to upright sprinting (20–40m). Velocity loss should be around 25–40% below unresisted speed.
Light loads allow near-normal sprint mechanics with a small amount of added resistance. Useful for reinforcing positions at higher velocities. Target less than 20% velocity loss.
Overspeed uses the T-APEX overspeed kit to pull the athlete faster than their natural top speed. Use sparingly, with full recovery, and never at high volume.
These are starting-point recommendations. Always verify with the T-APEX real-time velocity data — if the athlete's velocity loss doesn't match the target zone, adjust the load accordingly.
This calculator is designed for the T-APEX motorized sprint trainer.
The only sub-$10K device with real-time force and velocity data.
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About This Calculator
This resisted sprint load calculator provides starting-point resistance recommendations for the T-APEX motorized sprint trainer based on an athlete's body weight, max sprint velocity, and training goal.
The recommendations are based on velocity loss percentages commonly used in sprint training research. Heavy resisted sprints (50%+ velocity loss) target horizontal force production during acceleration. Moderate loads (25–40% velocity loss) train the transition phase. Light loads (under 20% velocity loss) allow near-normal mechanics with added resistance.
These values are starting points. Coaches should verify actual velocity loss using the T-APEX real-time data and adjust loads accordingly. For a full breakdown of resisted sprint programming, see our complete resisted sprint training guide.
For a detailed review of the T-APEX device, including two years of hands-on testing data, read our T-APEX review.