. Author manuscript; available in PMC: 2019 Jan 1.

Published in final edited form as: J Alzheimers Dis. 2018;66(4):1453–1462. doi: 10.3233/JAD-180805

Table 2.

Overall characteristics of physical activity, sedentary behavior and sleep by cognition groups.

	Normal (n = 271)	Low MoCA only (n = 252)	MCI (n = 105)	AD (n = 182)
VM cpm during wake time
Model 1	1953.5 ± 35.4^d	1975.6 ± 36.7^d	2073.2 ± 56.7^d	1592.1 ± 43.9^abc
Model 2	1945.0 ± 34.3^d	1970.5 ± 34.1^d	2030.6 ± 52.9^d	1695.1 ± 43.0^abc
% of wear time in Sedentary behavior
Model 1	58.4 ± 0.7^d	57.7 ± 0.7^d	56.2 ± 1.1^d	65.3 ± 0.9^abc
Model 2	58.4 ± 0.7^d	57.8 ± 0.7^d	57.1 ± 1.1^d	63.2 ± 0.8^abc
In-bed time
Model 1	466.5 ± 3.2	475.1 ± 3.3	469.4 ± 5.2	469.9 ± 4.0
Model 2	467.5 ± 3.4	474.3 ± 3.3	469.2 ± 5.2	471.9 ± 4.2
VM cpm during sleep
Model 1	223.6 ± 7.6	217.6 ± 7.9	241.2 ± 12.3	244.8 ± 9.4
Model 2	221.3 ± 8.0	216.9 ± 7.9	242.7 ± 12.5	246.8 ± 10.0

Notes: MoCA = Montreal Cognitive Assessment; MCI = mild cognitive impairment; AD =Alzheimer’s disease.

Model 1: Adjusted for age, gender and wear time.

Model 2: Adjusted for age, gender, wear time, years of education, BMI, usual gait speed, living status and disease burden

^a:

p < 0.05 for pairwise mean difference when comparing with normal group.

^b:

p < 0.05 for pairwise mean difference when comparing with low MoCA only group.

^c:

p < 0.05 for pairwise mean difference when comparing with MCI group.

^d:

p < 0.05 for pairwise mean difference when comparing with AD group.