Physical activity and cognitive function: moment-to-moment and day-to-day associations

Table 2 Associations between physical activity and processing speed analyzed by multilevel modelling (n = 6221)

	Model: Max Counts 60 min				Model: Max Counts 20 min				Model: Active time 60 min				Model: Active time 20 min
	B	SE	p		B	SE	p		B	SE	p		B	SE	p
Fixed effects
Intercept	1849.93	54.71	<.001		1843.76	54.61	<.001		1823.62	54.48	<.001		1825.36	54.47	<.001
EMA day	−27.49	1.78	<.001		−27.44	1.78	<.001		−27.52	1.78	<.001		−27.46	1.78	<.001
EMA session number	4.28	4.87	.380		4.00	4.87	.412		5.10	4.88	.296		4.64	4.87	.341
Weekend	−8.78	9.43	.352		−9.35	9.43	.321		−8.70	9.43	.356		−9.04	9.43	.338
Company	−23.27	9.05	.010		−23.86	9.06	.008		−24.36	9.06	.007		−24.70	9.07	.006
Location	−21.83	9.30	.019		−24.31	9.30	.009		−21.01	9.31	.024		−23.36	9.29	.012
Age^a	23.48	3.22	<.001		23.56	3.22	<.001		23.66	3.22	<.001		23.65	3.22	<.001
Education^a	−1.67	7.06	.813		−1.61	7.06	.820		−1.57	7.07	.824		−1.57	7.07	.824
Sex	123.86	47.20	.009		124.58	47.23	.009		127.00	47.27	.008		127.09	47.27	.008
Race/ethnicity	176.92	54.05	.001		176.81	54.09	.001		178.12	54.14	.001		178.02	54.14	.001
Physical activity^b	−.20	.05	<.001		−.50	.13	<.001		−1.26	.30	<.001		−3.11	.70	<.001
Variance components	Estimate	SE	Wald Z	p	Estimate	SE	Wald Z	p	Estimate	SE	Wald Z	p	Estimate	SE	Wald Z	p
Residual	95,534.17	1764.47	54.14	<.001	95,531.31	1764.41	54.14	<.001	9549.35	1763.66	54.14	<.001	99,671.15	1841.34	54.13	<.001
Random intercept	149,485.96	12,793.43	11.68	<.001	149,708.39	12,811.99	11.69	<.001	149,977.38	12,834.40	11.69	<.001	15,128.72	12,959.85	11.67	<.001

^aGrand-mean centered, ^bPerson-mean centered, Reference categories female (sex), weekday (weekend), white (Race/ethnicity), home (location), with others (company)

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