Research Article
Validation of Two Activity Monitors in Slow and Fast Walking Hospitalized Patients
Table 3
Agreement between steps and walking measured by direct observations and by ActivPAL3™ and SENS motion® used as both single- and dual-sensor systems.
| | Steps | Walking time |
| | Assessment method | All gait speeds
| Slow walkers
| Fast walkers
| All gait speeds
| Slow walkers
| Fast walkers
# | | Direct observation | 7738 | 3811 | 3865 | 6397# | 3758# | 2446# | | ActivPAL, single sensor | 5096 | 1872 | 3200 | 3863# | 1778# | 2039# | | SENS, single sensor | 5800 | 2311 | 3311 | 5506# | 3175# | 2183# | | ActivPAL, dual sensor | 5096 | 1872 | 3200 | 3795# | 1725# | 2040# | | SENS, dual sensor | 5800 | 2435 | 3311 | 5506# | 3175# | 2182# | | Percentage agreement between direct observation and ActivPAL/SENS | | ActivPAL (single sensor), median % (IQR) | 71.9 (39.5-80.4) | 45.9 (10.7-74.7) | 82.3 (75.1-90.6) | 73.1 (29.3-87.6) | 59.6 (9.4-82.4) | 83.9 (73.1-92.1) | | SENS (single sensor), median % (IQR) | 78.9 (40.3-87.1) | 53.33 (38.8-81.4) | 83.6 (78.4-91.4) | 88.9 (84.6-94.2) | 89.4 (81.3-92.6) | 89.4 (86.3-95.7) | | ActivPAL (dual sensor), median % (IQR) | 71.9 (39.5-80.4) | 45.9 (10.7-74.7) | 82.3 (75.1-90.6) | 73.1 (29.3-87.6) | 59.2 (9.3-82.4) | 83.0 (73.9-95.1) | | SENS (dual sensor), median % (IQR) | 78.9 (40.3-87.1) | 53.33 (38.8-81.4) | 83.6 (78.4-91.4) | 88.9 (84.6-94.2) | 89.4 (81.3-92.6) | 89.4 (86.3-95.7) |
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Number of steps; #walking time in sec; slow walkers: <0.67 m/s; fast walkers: ≥0.67 m/s. ActivPAL: ActivPAL3™ monitor; SENS: SENS motion®. |
