2015 NFL Timing Gates

Usain Bolt vs. NFL Running Back Chris Johnson in a 40yd Dash

In 2012, NFL star running back Chris Johnson challenged multi-World and Olympic Champion Sprinter Usain Bolt to race in a 40yd dash; that ultimately never happened. This article explores a theoretical matchup.
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Arm Swing Sprint Mechanics

A Call to Arms: Sprint Mechanics Revisited

In response to Ken Jakalski’s article “A Farewell to Arms,” what readers must be made aware of is the basic lever physics of arm action and then surmise the significance of this when considering the role of the arms in the realm of sprinting.
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Bolt’s Victory and Gatlin’s Loss: The Implications of Muscular Tone

Bolt managed the rounds beautifully by essentially just running fast enough to win each one and automatically qualify for the final. In this way, his tone going into the final would have been optimized because the 9.96 efforts in the heats and semis were more sub-max relative to his season best going in (9.87) compared to Gatlin’s heat and semi relative to his 9.74.
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Cranial Sacral Therapy

The Unification of Regeneration - Manual Therapy

What all manual therapy specialists share in common, specifically in the context of treating athletes, is the administration of pressure and release in order to restore and enhance the systemic function of the body for the demands of sport.
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James Smith

Anaerobic Supply Mechanisms: Applied Physiology

By James Smith Sports are defined by movement and bioenergetic supply mechanisms provide the energy for muscle contraction. The two primary bioenergetic domains (Anaerobic and Aerobic) are differentiated based upon the...
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The Sled: Resisted Sprint Training Considerations

A near household training implement, familiar to any sprint coach, is a sled. The sled is one of many means of introducing external load via which the sprinter must exert against in order to achieve locomotion.
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