The Power of Resistance Running to Improve Speed 
There a many forms of resistance running exercises to improve speed. Anyone looking to improve speed should have this type of component in their training regiment.
Resistance training benefits include the development of better ground forces to propel the body as well as improving stride length.
Some of the most popular forms include:  hills, parachutes, partner, tires and sleds and variable mechanical devices.
All can be effective at some level. Here is how I rank their effectiveness. Best to least.
1. Variable Resistance – capability to adjust athlete appropriate load/resistance.
2. Sleds – also adjustable but cumbersome to use. Multiple weights to change load.
3. Hills – no variable resistance, need multiple hills, can lead to shin, knee back injuries.
4. Tires– cumbersome, inconsistent resistance.
5. Parachutes – can experience inconsistent resistance during acceleration.
6. Partner – only as good as the person providing resistance.
At Gamespeed we Level Up our resistance speed training by using variable load devices to provide the correct loads appropriate to each individual athlete. Not just doing it, but doing it better is what we are all about.  Only the Swift Survive
Train Hard: Good
 Train Smart: Better
Try A Better Way at our  Speed Skills Class 
Aaron Thigpen has been making athletes faster for over 25 years. Speaking on speed development he has been a guest speaker at the US Olympic Center and international venues in South America and Europe. A former 11 time US national team member as a track athlete , speed has been his thing for over three decades.Â