Parameters (slope a, and y-intercept b) for linear regressions of kinematic measures.

Kinematic measures: tC−1 (inverted contact duration), tS−1 (inverted swing duration), sS (swing length), and sT (stride length). Medians as well as 25% and 75% percentiles (in parentheses) are given. Resultant linear functions relate the parameters to running speed. Significance numbers (sig) refer to comparisons with significant differences between legs 1 to 4 (from anterior to posterior) on the 5% level, i.e. if 3 and 4 occur in the significance column of the 1st legs, then the differences of the frontal legs to the 3rd and 4th legs are significant, but not to the 2nd legs. For sT the transitional speeds v× were 0.28 ms−1 in the first, 0.27 ms−1 in the second, 0.39 ms−1 in the third, and 0.39 ms−1 in the hind legs with much lower increases in the stride lengths of the third and fourth legs than in the anterior leg pairs. In tS−1 the transitions occur at 0.28 ms−1 in the first, 0.25 ms−1 in the second, 0.2 ms−1 in the third and at 0.28 ms−1 in the hind legs.