2.1. Arbitrary Units

The values of t_lim1, D_lim1 and S₁ in arbitrary units in protocols 1, 2 and 3 are equal to 1:

The values of t_lim2 and t_lim3 in arbitrary units in protocols 1 and 2 are equal to 4 and 7, respectively.

The distances and running speeds corresponding to t_lim2 and t_lim3 was computed from the power-law model b Kennelly with arbitrary units of t_lim:

For the high-endurance athlete, exponent g of the power-law model is equal to 0.95. Therefore_, the values of D_lim2, D_lim3, S₂ and S₃ in arbitrary units are equal to:

For the low-endurance athlete, exponent g of the power-law model is equal to 0.80. Therefore_, the values of D_lim2, D_lim3, S₂ and S₃ in arbitrary units are equal to:

The values of constant-distances (D_lim) in the present study were equal to the averages of the distances of low and high-endurance athletes, in protocols 1 and 2, i.e., 1 (D_lim1), 3.3819 (D_lim2) and 5.5471 (D_lim3). The values of t_lim2 and t_lim3 corresponding to these distances were:

For the low-endurance athlete:

For the high-endurance athlete: