Hill’s Equation in Arm Push of Shot Put and in Braking of Arm Rotation

This chapter consists of the earlier study of shot put where A.V. Hill’s force-velocity relationship was
transformed into a constant maximum power model consisting of three different components of power.
In addition, the braking phase of the arm rotation movement was examined where Hill’s equation was
applied for accelerated motions. Hill’s force-velocity relationship was tested by fitting it into two arm
push measurements of shot put experiments and one braking phase of whole arm rotation.
Theoretically derived equation for accelerated motions was in agreement with the measured data of
shot put experiments and the braking phase of the whole arm rotation experiment. Maximum power in
these experiments was also tested by three different equations and two of them seemed to function
well. The progress of movement in the studied experiments was concluded to be as follows: 1) the
state of low speed and maximal acceleration which applies to the hypothesis of constant force, 2) the
state of high speed and maximal power which applies to the hypothesis of constant power.