. 2021 Apr 27;18(9):4646. doi: 10.3390/ijerph18094646

Table 3.

Stepwise regression analyses relating both maturity offset and chronological age (CA) with components of force-velocity (FV) profiles in sprinting and jumping.

Sprinting	Model 1			Model 2			Model 3
Maturity offset	B	SE B	β	B	SE B	β	B	SE B	β
P_max	0.01	0	0.92 ^§	0.01	0	0.9 ^§	0.003	0.002	0.35 ^§
DRF				22.65	6.36	0.14 ^†	38.94	8.5	0.24 ^§
F₀							0.11	0.004	0.55 ^†
R² adjusted	0.849			0.867			0.877
CA	B	SE B	β	B	SE B	β	B	SE B	β
P_max	0.01	0	0.9 ^§	0.01	0	0.87 ^§
DRF				27.57	9.24	0.14 ^†
R² adjusted	0.8			0.817
Jumping	Model 1			Model 2
Maturity offset	B	SE B	β	B	SE B	β
F₀	0.004	0	0.91 ^§	0.004	0	0.96 ^§
FV slope				−0.15	0.03	−0.23 ^§
R² adjusted	0.834			0.882
CA	B	SE B	β	B	SE B	β
F₀	0.004	0	0.89 ^§	0.005	0	0.94 ^§
FV slope				−0.18	0.04	−0.21 ^§
R² adjusted	0.792			0.831

FV slope, force-velocity slope; V₀, theoretical maximal velocity; F₀, theoretical maximal force; P_max, theoretical maximal power; FV deficit, percent difference respect to the optimal FV profile; R² = Pearson’s multivariate coefficient of determination; B = unstandardized beta (regression) coefficient; SE B = standard error of B; β = standardized beta (regression) coefficient. ^† p < 0.01, ^§ p < 0.001.