Table 2.
The mean overall time spent in activity categories, the activity level and circadian indices for each diagnostic group
| Alzheimer’s disease (n = 70) |
Dementia with Lewy bodies (n = 29) |
Mixed AD (+ CVD) (n = 8) |
Vascular cognitive dysfunction (n = 15) |
Healthy control (n = 48) |
P-value | |
|---|---|---|---|---|---|---|
| Activity categories | ||||||
|
Lying rest, minutes/day |
591 ± 102.7 | 625.4 ± 119.2 | 568.9 ± 101 | 633.1 ± 107.3 | 539.7 ± 88.8 | 0.005 |
| Lying movement, minutes/day | 5.7 ± 3.8 | 5.4 ± 3.6 | 6.4 ± 3.2 | 5.1 ± 3.4 | 6.3 ± 3.3 | 0.3 |
| Upright standing, minutes/day | 120 ± 53.6 | 116.8 ± 48.7 | 145.3 ± 65.3 | 89 ± 42.6 | 117.3 ± 40.1 | 0.05 |
|
Sporadic walking, minutes/day |
116.3 ± 40 | 98.5 ± 37.3 | 89.4 ± 35.4 | 82.1 ± 52.2 | 108.1 ± 32.1 | 0.002 |
|
Running, minutes/week |
3.1 ± 20.7 | 4.4 ± 15.5 | 0.3 ± 0.6 | 0.1 ± 0.3 | 3.8 ± 10.4 | 0.047 |
|
Cycling, minutes/week |
17.6 ± 40.6 | 60.3 ± 99.8 | 1.8 ± 5.1 | 11.2 ± 18.5 | 42.6 ± 65.9 | 0.001 |
|
Sitting, minutes/day |
489.8 ± 112.8 | 486.4 ± 110.3 | 560.9 ± 151.4 | 545.6 ± 138 | 528.2 ± 96.3 | 0.01 |
|
Sit-to-stand, number/day |
61 ± 19.7 | 65 ± 25.1 | 50 ± 21.8 | 52 ± 13.9 | 62 ± 15.8 | 0.06 |
| Activity level and circadian indices | ||||||
| Overall intensity, intensity count | 31.7 ± 10.6 | 29.1 ± 13.8 | 19.5 ± 10.6 | 21.4 ± 11.2 | 39.1 ± 12.2 | < 0.001 |
|
Most active 10 h, intensity count |
926 ± 331 | 832 ± 414.9 | 548.6 ± 356.7 | 602.0 ± 353.4 | 1135.4 ± 401.8 | < 0.001 |
|
Least active five hours, intensity count |
22.2 ± 13.6 | 36.0 ± 30.4 | 43.5 ± 11.3 | 34.9 ± 25.5 | 24.5 ± 12.7 | 0.002 |
Values are expressed as the mean ± standard deviation and are given as average number of minutes per day or week spent in an activity category as classified by the algorithm. Intensity counts are unitless. P-values from Kruskal-Wallis test. Bold indicates p-value below significance level