Table 1.

Descriptive statistics for unstandardised continuous childhood and adolescent measures and physical activity

	Females					Males
Variables	n	Mean	Std dev	Min	Max	n	Mean	Std dev	Min	Max
Childhood measures
Socioeconomic statusa	371	3.14	1.09	1.00	5.50	398	3.17	1.10	1.00	6.00
Family active-recreation orientationb	358	6.17	1.79	1.00	9.00	388	6.04	1.82	0.50	9.00
Home activitiesc	338	12.62	2.37	5.00	16.00	366	12.63	2.11	4.00	16.00
Childhood motor abilityd	336	−0.07	0.96	−8.21	2.15	374	0.12	0.87	−4.42	2.39
IQ	362	107.25	12.83	70.00	140.50	395	108.69	13.14	74.75	136.50
Contemporaneous measures
Predicted VO2max	365	44.08	4.42	34.20	61.70	397	49.24	5.73	36.50	71.30
Television viewing (hours/week)	349	22.23	11.84	0.00	67.00	378	25.40	12.64	2.00	86.00
Physical activitye
Age 15	401	7.56	5.90	0.00	36.02	431	11.28	8.18	0.00	41.27
Age 18	421	4.09	4.54	0.00	30.10	449	7.32	7.78	0.00	53.08

^aSES score on scale of 1–6 with higher scores = lower SES

^bScores on scale from 0–9 with higher scores = higher family active-recreation orientation

^cScore out of a total of 16 available activities

^dAverage of standardized motor scores from ages 7 and 9 years

^eAverage hours per week