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. 2014 Jul 25;9(7):e103559. doi: 10.1371/journal.pone.0103559

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.

a

RTI measures children’s reaction time and speed of response to a visual target in milliseconds, where faster time indicates better performance.

b

MVPA measured with the ActiGraph accelerometer using a cut-off value of 2,296 counts per minute and expressed as min/day.

c

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).

d

RVP measures the sustained attention. The score of this task is RVP A’, where range is 0.00 to 1.00; bad to good.

e

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.

f

Self-reported viewing of television, playing of computer/video games and use of computer (other than playing) are expresses as h/day.

g

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.