Seasonal variation in objectively measured physical activity, sedentary time, cardio-respiratory fitness and sleep duration among 8–11 year-old Danish children: a repeated-measures study

Table 5 Partial correlation coefficients (r) between sedentary time, screen time, physical activity, cardio-respiratory fitness and sleep duration from baseline and average of the three seasons

	Sedentary time (min/day)	Screen time (min/day)	Total PA (cpm)	MVPA (min/day)	CRF (ml/kg/day)
Screen time (min/day)¹	0.18 / 0.17
Total PA (cpm)	−0.70 / -0.69	−0.13 / -0.11
MVPA (min/day)	−0.49 / -0.49	−0.08 / -0.06	0.89 / 0.91
CRF (ml/kg/day)	−0.05 / -0.17²	−0.14 / -0.16	0.22 / 0.45	0.29 / 0.50
Sleep duration (min/night)	0.06 / 0.05	−0.14 / -0.15	−0.13 / -0.15	−0.15 / -0.18	0.02 / -0.05

Abbreviations: PA Physical activity, MVPA Moderate-to-vigorous physical activity, CRF Cardio-respiratory fitness.
First number is partial correlation coefficients (r) from baseline measurements only. Second number is r from the average of all three seasons. Both are controlled for age, grade, gender and pubertal status.
r ≥ |0.09|: P < 0.05.
r ≥ |0.16|: P < 0.001.
¹Screen time is only measured at baseline.
²When adjusted for MVPA: r = 0.08; p = 0.09.

ISSN: 1471-2458