Yeah I can see the argument for running getting a person tired. But in jumping, all the force is exerted before one's feet leave the ground. The jumper is a

Yeah I can see the argument for running getting a person tired. But in jumping, all the force is exerted before one's feet leave the ground. The jumper is a 200lb weight imbued with a certain amount of kinetic energy, subject to deceleration proportional to its weight. An ounce is about .03% of the total deceleration. I maintain that the weight will not produce a significant impact on the trajectory of a jump.