Effects of a physical education intervention on cognitive function in young children: randomized controlled pilot study

Table 3 Test Retest Reliability of the CANTAB and ANT, mean (SD)

	Measure 1 3 weeks prior to exploratory RCT baseline	Measure 2 In the week the RCT started	ICC	SEM	CV	LOA (+/-)
CANTAB (n = 64)
Spatial span length	3.51 (0.86)	3.35 (0.84)	0.51*	0.60	19.65	1.70
Spatial span total errors	10.36 (4.28)	9.10 (3.97)	-0.08	4.30	14.84	12.15
Spatial span usage errors	2.87 (1.78)	2.66 (2.26)	0.11	1.20	51.13	5.43
Spatial working memory errors	68.93 (11.04)	69.53 (10.37)	0.59*	7.19	7.65	20.36
Spatial working memory strategy	39.35 (2.54)	38.63 (2.72)	0.03	2.67	7.78	7.57
ANT (n = 62)
ANT reaction time (ms)	960.33 (138.19)	855.84 (122.93)	0.37*	104.23	16.77	297.27
ANT accuracy	103.91 (27.95)	105.81 (28.86)	0.60**	18.21	83.60	51.96

Cambridge Neuropsychological Test Battery (CANTAB) Spatial span length: (number of items that can be held in short term memory), Spatial span total errors (the number of times an incorrect item is selected), Spatial span usage errors; the number of times an item is selected out of sequence. Spatial working memory strategy: whether a strategic search is used. Attention Network Test (ANT) Reaction Time: to stimulus in milliseconds (mean of median), stimulus is a fish appearing on screen (mouse button is pressed); Accuracy: total correct from 144; a 'correct' response is when the mouse button pressed corresponds with the direction the 'flanker' (fish) is pointing; ICC - intraclass correlation; SEM - standard error of measurement; CV - coefficient of variation; LOA - Limits of agreement. *P < 0.05 **P < 0.001.

ISSN: 1471-2431