Table 3 Regression models for the index, position and velocity of the different key events

Index

HC CL

0

-

-

-

0

1^st local max vel.

32.0

−7.79

0.826

-

1.92

max height

34.4

−5.27

0.579

-

1.70

2^nd local max vel.

47.3

−0.609

0.0725

-

1.09

2^nd local min vel.

52.4

-

-

-

1.26

min height

88.2

−13.3

1.55

-

4.87

β ₀ (Intercept)

β ₁ (speed)

β ₂ (speed ² )

β ₃ (body height)

RMSE

Position

HC CL

−0.387 x10^-2

0.768 x10^-2

-

-

0. 572 x10^-2

1^st local max vel.

7.41 x10^-2

1.73 x10^-2

−0.165 x10^-2

-

1.36 x10^-2

max height

−2.63 x10^-2

3.57 x10^-2

−0.362 x10^-2

6.64 x10^-2

1.44 x10^-2

2^nd local max vel.

1.49 x10^-2

-

0.0221 x10^-2

-

0. 345 x10^-2

2^nd local min vel.

1.05 x10^-2

-

-

-

0. 231 x10^-2

min height

0

-

-

-

0

β ₀ (Intercept)

β ₁ (speed)

β ₂ (speed ² )

β ₃ (body height)

RMSE

Velocity

HC CL

2.79 x10^-3

0. 732 x10^-3

-

−1.75 x10^-3

0. 466 x10^-3

1^st local max vel.

−6.22 x10^-3

1.54 x10^-3

−0. 207 x10^-3

7.95 x10^-3

1.08 x10^-3

max height

0

-

-

-

0

2^nd local max vel.

−3.31 x10^-3

-

0.0307 x10^-3

2.35 x10^-3

0. 970 x10^-3

2^nd local min vel.

−2.57 x10^-3

-

-

-

0. 628 x10^-3

min height

0

-

-

-

0