Validation of Two Activity Monitors in Slow and Fast Walking Hospitalized Patients

Table 4

Agreement between standing, sitting, and lying measured by direct observations and by ActivPAL3™ and SENS motion® used as both single- and dual-sensor systems.

	Standing	Lying		Sitting
Assessment method	Standing; N = 35	Supine; N = 35	Flexed hips & knees; N = 35	On bed/chair; N = 35	In bed, backrest elevated 60°; N = 35
Direct observation (sec)	2215	2281	2249	4774	2281
ActivPAL, single sensor (sec)	1507	2137	2184
SENS, single sensor (sec)	1396	2339	2161
ActivPAL, dual sensor (sec)	1505	1665	2118	3401	1580
SENS, dual sensor (sec)	1396	1808	2144	3740	1478
Percentage agreement between direct observation and ActivPAL/SENS
ActivPAL (single sensor), median % (IQR)	73.5 (47.8-90.6)	98.4 (89.6-100)	100 (95.2-100)
SENS (single sensor), median % (IQR)	67.7 (43.4-85.9)	99.2 (94.5-100)	99.2 (94.5-100)
ActivPAL (dual sensor), median % (IQR)	71.4 (47.6-95.2)	78.1 (50.0-98.4)	100 (93.8-100)	79.5 (60.9-90.2)	92.3 (46.9-100)
SENS (dual sensor), median % (IQR)	67.7 (43.4-85.9)	93.1 (55.9-99.2)	99.2 (94.5-100)	84.6 (69.2-96.0)	76.4 (38.9-93.2)

ActivPAL: ActivPAL3™ monitor; SENS: SENS motion®.