Table 2.

Intended and actual position of accelerometers during the measurement of Subject 20.

Day of Measurement	1	2	3	4	5	6	1	2	3	4	5	6
Predefined position	L1						R1
x-axis (upright)	+	+	-	-	-	-	+	+	+	+	+	+
y-axis (sitting)	+	+	+	+	-	+	-	-	+	+	-	+
z-axis (sitting)	+	+	+	+	-	+	+	+	+	+	-	+
Actual position	R3	R3	L4	L4	L2	L4	L3	L3	R3	R3	R1	R3