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Athletes at every level struggle to dorsiflex effectively while running. By letting the foot drop into plantar flexion throughout the ‘stance’, ‘extension’ and ‘swing’ phases of running, performance is negatively affected by:

  • Landing in front of the centre of mass causing braking forces to slow down the athlete.
  • Increased ground contact time, due to inefficient landing mechanics.
  • Lengthening the leg (lever), increasing the distance of the foot from the axis of rotation, reducing stride frequency.

Using the Freq Reflex, will train the athlete to dorsiflex effectively throughout the ‘stance’, ‘extension’ and ‘swing’ phases and will help maintain technique while moving at speed. This positively affects performance by:

  • Helping the foot to land underneath the centre of mass, reducing braking forces so the athlete can maintain speed.
  • Decreasing ground contact time, due to efficient landing mechanics allowing force to be absorbed and returned more effectively.
  • Shortening the leg (lever) so that the foot can move nearer to the axis of rotation, increasing stride frequency for the next crucial ground contact.        


The same running mechanics apply to multi-directional sports, such as Rugby and Football. Using the Freq Reflex during speed-agility or technical drills will improve acceleration and ability to change direction quickly due to efficient running technique, power development principles and tendon stretch reflexes.


Power is the speed by which force can be applied. Pushing against the resistance band will develop power through extension of the ankle joint. Train the full range of the force-velocity curve to develop optimal power. The red and black resistance bands are stronger, helping to train towards the force end of the spectrum. The blue and yellow bands help train the velocity end, while the green bands train the middle range.

 Tendon Stretch Reflexes 

The Freq Reflex will stretch the Achilles tendon around the ankle joint, so that when ground contact is made, the tendon is primed to release elastic energy quickly. This will improve ground contact time and increase ground reaction forces to propel the athlete forward quickly and powerfully. Optimal ground contact time is typically 0.2 seconds.