Table 3.
Description of steps measured by each device and manually counted for each activity.
| Fitbit Alta | Fitbit Zip | Garmin Vivofit 4 | Yamax SW200 Digi-Walker | Letscom | activPAL3μ | Manual count | |
|---|---|---|---|---|---|---|---|
| Deskwork | |||||||
| Median (min, max) | 0 (0, 19) | 0 (0, 0) | 0 (0, 15) | 0 (0, 6) | 0 (0, 11) | 0 (0, 0) | 0 (0, 0) |
| Elevator | |||||||
| Mean (SD) | 10.2 (6.7) | 12.1 (6.5) | 11.6 (10.8) | 12.7 (8.4) | −1.3 (5.7) | 6.1 (3.0) | 22.9 (7.6) |
| Median (min, max) | 11 (0, 25) | 14 (0, 21) | 11 (0, 30) | 14 (0, 21) | 0 (-25, 0) | 5.5 (3, 14) | 21 (14, 48) |
| Washing dishes | |||||||
| Mean (SD) | 169.8 (125.6) | 15.4 (13.4) | 143.4 (71.6) | 19.0 (13.4) | 406.6 (255.2) | 7.4 (4.5) | 54.1 (29.0) |
| Median (min, max) | 130 (24, 504) | 13 (6, 67) | 130 (59, 315) | 15 (4, 57) | 307 (0, 840) | 5.5 (2, 19) | 40 (20, 131) |
| Stairsa | |||||||
| Mean (SD) | 26.2 (11.3) | 28.4 (8.2) | 28.3 (15.3) | 26.1 (8.2) | 18.8 (19.6) | 13.9 (2.8) | 32.4 (4.6) |
| Median (min, max) | 30 (0, 41) | 31 (0, 36) | 34 (0, 45) | 31 (0, 36) | 16 (0, 43) | 14 (10, 20) | 31.5 (27, 45) |
| Indoor walking | |||||||
| Mean (SD) | 32.6 (26.2) | 37.0 (7.2) | 37.5 (18.1) | 36.6 (8.8) | 32.3 (23.3) | 18.4 (6.5) | 40.3 (12.7) |
| Median (min, max) | 33 (-62, 76) | 36 (18, 56) | 39 (0, 78) | 36 (25, 67) | 37 (0, 86) | 16 (13, 35) | 36 (28, 77) |
| Outdoor walkingb | |||||||
| Mean (SD) | 274.4 (72.9) | 254.4 (50.2) | 280.8 (109.4) | 182.6 (99.4) | 271.4 (81.7) | 137.5 (45.7) | 304.1 (187.0) |
| Median (min, max) | 258.5 (219, 530) | 256 (119, 374) | 263 (144, 667) | 236 (0, 286) | 265.5 (152, 552) | 128 (107, 287) | 262 (218, 976) |
| Cyclingc | |||||||
| Median (min, max) | 81 (−9, 642) | 0 (0, 544) | 0 (0, 777) | 1 (0, 154) | 0 (0, 480) | 0 (0, 0) | 0 (0, 0) |
| Drivingd | |||||||
| Median (min, max) | 29.5 (0, 144) | 2 (0, 14) | 112 (19, 236) | 40 (1, 66) | 0 (-29, 99) | 0 (0, 0) | 0 (0, 0) |
| Obstaclese | |||||||
| Mean (SD) | 47.9 (25.1) | 47.3 (9.3) | 61.3 (28.6) | 42.1 (14.7) | 57.0 (26.7) | 26.2 (10.3) | 61.1 (44.8) |
| Median (min, max) | 43 (11, 123) | 49.5 (19, 59) | 55 (0, 130) | 42.5 (16, 80) | 48.5 (0, 120) | 23, (19, 56) | 48 (8, 222) |
| Total | |||||||
| Mean (SD) | 745.3 (357.8) | 448.6 (249.7) | 693.5 (289.6) | 323.1 (118.7) | 832.5 (314.7) | 179.6 (83.7) | 442.5 (269.6) |
| Median (min, max) | 745 (147, 1425) | 409 (83, 956) | 730 (190, 1259) | 365 (91,491) | 965 (316, 1378) | 190.5 (45, 428) | 450 (101, 1442) |
n = 19 for all devices except for activPAL3μ (n = 16) unless stated otherwise;
a
n = 16 for all devices except for activPAL3μ (n = 13);
b
n = 16 for all devices except for activPAL3μ (n = 13) and manual count (n = 15);
c
n = 17 for all devices except for activPAL3μ (n = 15);
d
n = 14 for all devices except for activPAL3μ (n = 13);
e
n = 18 for all devices except for activPAL3μ (n = 15).