Equipment
SHREDmill
The SHREDmill is a self-propelled, non-motorized sprint treadmill designed specifically for speed development in athletic training environments. Unlike a conventional motorized treadmill where the belt moves independently of the athlete, the SHREDmill belt is driven entirely by the athlete’s own effort. A magnetic resistance system creates eddy current resistance that scales automatically with belt speed: the faster the athlete moves, the more resistance is generated. There is no motor to maintain, no belt speed to set, and no external pacing mechanism. The athlete is in complete control of the effort.
How it works
The SHREDmill uses four gear settings that combine resistance level and incline angle to target different phases of sprint development. Lower gears create higher resistance at zero incline, targeting the force production demands of acceleration. Higher gears reduce resistance and increase incline, allowing athletes to approach maximum velocity in a controlled indoor environment. The gear system means a coach can move athletes through different training stimuli in the same session without changing equipment setups. Integrated sensors capture real-time data on stride length, speed, and velocity curves, which feed into companion software for athlete tracking and programming.
Why coaches use it
Outdoor sprint training is weather-dependent, space-dependent, and difficult to measure consistently. The SHREDmill solves all three problems in a compact footprint (roughly 94 by 41 inches). It allows coaches to run resisted and assisted sprint work indoors, year-round, with real-time data on every rep. For programs with limited outdoor facilities or harsh winter training environments, it provides a controlled alternative that does not require a track, a sled setup, or good weather. The data capture is particularly valuable for tracking sprint mechanics and velocity development over a training block in a way that outdoor work rarely allows.
Who it is built for
The SHREDmill was developed by Tony Villani at XPE Sports and gained its widest recognition through NFL Combine preparation, where it has been used by dozens of first-round draft picks. It has since moved into collegiate and high school programs, where coaches use it primarily for speed development in football, basketball, soccer, and track athletes. It is designed for small group training (1 to 10 athletes) and works well in weight room environments where outdoor sprint lanes are not available. At the high school level, it represents a meaningful investment in dedicated speed training infrastructure that most programs have not historically had access to.
Considerations
The SHREDmill is a premium piece of equipment with a price point that reflects it. Programs evaluating it should assess whether dedicated indoor sprint training is a gap in their current setup, and whether the athlete volume and training frequency justify the cost. It is most valuable for programs that already have a structured speed development component in their S&C programming and need a reliable, measurable indoor solution. It is less likely to move the needle for programs where sprint training is occasional or unstructured.
Related terms
Sprint Mechanics · Max Velocity · Force-Velocity Profiling · Conditioning Sled · Session RPE