Two factors that determine running speed are stride cadence and stride length. Because athletes propel themselves forward only when their foot is in contact with the ground, the stance phase of the running stride should be the focus of speed enhancement programs.

This excerpt breaks down the optimal positions of the body during acceleration and deceleration.

This book excerpt is an overview of the fundamentals to sprinting mechanics and technique. It also covers starting, acceleration, drive phase, recovery phase, and deceleration.

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In this session from the 2019 NSCA National Conference, Joe Drake, co-owner of Gravity + Oxygen Fitness and Axiom Fitness Academy, discusses power, explains how running power allows you to determine overall effort, and educates on how to test and track running power in order to maximize training efforts.

Various methods of eccentric training that aim to increase muscle mass or reduce ground contact time during a landing task have been extensively researched and practically examined. However, multiple methods to implement eccentric training currently exist; they differ in execution and intended training adaptions. There is a clear differentiation between an eccentric muscle action and an eccentric motion whereby a motion alludes to a downward movement of an exercise. The proposed eccentric motions are dissipating eccentrics, deceleration eccentrics, overcoming eccentrics, maximal eccentrics, and rebound eccentrics. These motions formulate into training methods and cues to allow practitioners to clearly differentiate the various eccentric training methods used in research and practice. This review proposes a new conceptual framework that clearly outlines the different forms of eccentric motions that fall into a desired eccentric training method.

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Gary Boros, Assistant Sport Performance Coach at the University of Denver, talks to the NSCA Head Strength and Conditioning Coach, Scott Caulfield, about being flexible in your programming and with your staff, not always grinding your athletes into the ground, and the need to learn from others.

Acceleration is the rate of change in velocity, so this phase of sprinting is critical for changing directions as rapidly and efficiently as possible. Optimal technique for linear sprinting in the acceleration phase involves four factors that maximize stride length and frequency.