Stephen Francis in Sydney

[Charlie_Francis]

@kitkat1

I think there is a case for a variety of loading depending on the objectives of the exercise and capacity of the athlete.

I used the sled initially to ground the athlete just sufficiently for him/her to get a feel for applying an impulse during the acceleration phase.

I also used the sled as a power-endurance enhancer, with the objective of trying to get the athlete to run tall when fatigued under a slight load (sometimes just the sled, sometimes with a light plate - weight would vary according to the ability of the athlete)

I would agree, provided the higher loads are restricted to very short distances and the load diminishes as you go farther out (as KK describes).