Table 3. The associations between children’s cognitive processes and objectively measured physical activity, sedentary time and self-reported screen time.
B | SE | 95% CI | Pg | |
Reaction Time (RTI) a | ||||
Objectively measured MVPAb | −0.130 | 0.062 | −0.253, −0.008 | 0.037 |
Objectively measured sedentary timec | −0.041 | 0.074 | −0.186, 0.104 | 0.581 |
Rapid Visual Information Processing (RVP) d | ||||
Objectively measured MVPA | −0.040 | 0.093 | −0.223, 0.143 | 0.669 |
Objectively measured sedentary time | 0.305 | 0.078 | 0.153, 0.457 | 0.000 |
Spatial Span (SSP) e | ||||
Self-reported viewing of TVf | −0.003 | 0.067 | −0.134, 0.129 | 0.970 |
Self-reported playing of computer/video gamef | −0.179 | 0.079 | −0.333, −0.024 | 0.023 |
Self-reported use of computer (other than playing)f | 0.094 | 0.068 | −0.040, 0.227 | 0.171 |
Abbreviations: B, estimate; SE, standard error; CI, confidence interval; p, P-value; MVPA, moderate to vigorous physical activity.
RTI measures children’s reaction time and speed of response to a visual target in milliseconds, where faster time indicates better performance.
MVPA measured with the ActiGraph accelerometer using a cut-off value of 2,296 counts per minute and expressed as min/day.
Sedentary time measured by the ActiGraph accelerometer using a cut-off value of 100 counts per minute and expressed as percentage of daily monitoring time (%/day).
RVP measures the sustained attention. The score of this task is RVP A’, where range is 0.00 to 1.00; bad to good.
SSP measures length of the visuospatial working memory span. The score of this task is the maximum number of items that the child can successfully reproduce.
Self-reported viewing of television, playing of computer/video games and use of computer (other than playing) are expresses as h/day.
P-values for parameter estimates.
Models have been adjusted with gender (female), the highest level of parental education (tertiary level) and child’s need for remedial education.