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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

From: 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

  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
  1. Abbreviations: PA Physical activity, MVPA Moderate-to-vigorous physical activity, CRF Cardio-respiratory fitness.
  2. 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.
  3. r ≥ |0.09|: P < 0.05.
  4. r ≥ |0.16|: P < 0.001.
  5. 1Screen time is only measured at baseline.
  6. 2When adjusted for MVPA: r = 0.08; p = 0.09.