Standardized regression coefficients of background and motor variables as predictors and academic achievements as the predicted variables.

Table 2: Standardized regression coefficients of background and motor variables as predictors and academic achievements as the predicted variables.

Predicted variables
	Language arts				Mathematics
Predictors	Grammar	Written exp.	Reading comp.	Total	Whole numbers	Fractions	Geometry	Total
Block 1 (enter)
Sex	- 0.137	0.436^**	- 0.176	- 0.007	0.104	- 0.113	- 0.057	- 0.038
Age	- 0.009	- 0.026	- 0.038	- 0.017	- 0.152	- 0.108	- 0.198	- 0.153
Dominant foot	- 0.073	- 0.076	- 0.002	- 0.052	- 0.143	- 0.229^a	- 0.236^*	- 0.225
Physical activity	- 0.216	- 0.153	- 0.071	- 0.126	- 0.087	- 0.142	- 0.167	- 0.143
Task order	0.040	- 0.077	0.011	- 0.005	- 0.022	- 0.119	0.129	- 0.049
LD	- 0.097	- 0.231^a	- 0.252^*	- 0.286^*	- 0.209	- 0.279^*	- 0.311^*	- 0.297^*
Block 2 (stepwise)
Dynamic 1			- 0.569^**	- 0.492^**
Dynamic 2			0.426^**	0.395^**
Dynamic 3
Static 1
Static 2
Static 3	- 0.383^**
Model R²	0.22	0.34	0.31	0.32	0.11	0.18	0.22	0.18
Model F	2.36	5.07	3.16	3.26	1.16	2.12	2.78	2.11
Model p	0.035	> 0.001	0.005	0.004	0.342	0.064	0.019	0.065

Note: LD: Learning disabilities; Written exp: Written expression; Reading comp: Reading comprehension; ML scores in Block 2 were assessed as the standard deviations of trunk tilt from body center (in degrees); ^*p < 0.05, ^**p < 0.01, ^ap < 0.06.