. 2020 Jul 25;17(15):5365. doi: 10.3390/ijerph17155365

Table 1.

Descriptive Statistics and Bivariate Correlations among Variables.

Variable	Range	α		M (SD)		d_Cohen	Skewness		Kurtosis		1	2	3	4	5	6	7	8
Variable	Range	Girls	Boys	Girls	Boys	d_Cohen	Girls	Boys	Girls	Boys	1	2	3	4	5	6	7	8
1. Past exercise behaviour (last 6 months)	1–6	-	-	3.80 (1.43)	4.52 (1.40)	0.51	−0.01	−0.71	−0.80	−0.35	-	0.33	0.30	0.25	0.47	0.35	0.39	0.49
2. Parents’ Autonomy Support	1–7	0.96	0.95	5.19 (1.44)	5.50 (1.23)	0.23	−0.68	−0.88	−0.35	0.49	0.45	-	0.71	0.40	0.43	0.39	0.64	0.43
3. Peers’ Autonomy Support	1–7	0.96	0.94	4.98 (1.33)	5.35 (1.11)	0.30	−0.61	−0.72	−0.16	0.54	0.42	0.66	-	0.41	0.41	0.50	0.54	0.48
4. Attitude	1–7	0.90	0.95	5.43 (1.49)	5.82 (1.31)	0.28	−0.87	-1.40	−0.15	1.93	0.49	0.46	0.40	-	0.41	0.26	0.47	0.45
5. Control	1–7	0.84	0.86	5.09 (1.36)	5.50 (1.24)	0.32	−0.54	−0.69	−0.17	−0.31	0.69	0.61	0.51	0.51	-	0.34	0.49	0.66
6. Descriptive Norms	1–7	0.80	0.80	4.59 (1.27)	4.92 (1.24)	0.26	−0.27	−0.52	−0.19	−0.02	0.44	0.39	0.33	0.35	0.48	-	0.40	0.35
7. Subjective Norms	1–7	0.89	0.85	5.21 (1.42)	5.52 (1.16)	0.24	−0.62	−0.67	−0.31	−0.17	0.41	0.58	0.58	0.49	0.58	0.43	-	0.54
8. Exercise Intention	1–7	0.97	0.95	4.91 (1.74)	5.52 (1.59)	0.37	−0.35	−0.88	-1.05	−0.16	0.68	0.52	0.52	0.56	0.75	0.40	0.49.	-

Note. The correlation values shown above the diagonal correspond to girls (n = 217). The correlation values shown below the diagonal correspond to boys (n = 211). All correlation values shown are statistically significant (p < 0.001). α = Cronbach’s alpha.