Skip to main content

Table 5 Number of measurement days needed for 80%, 85% and 90% reliability when measuring sitting time and physical activity at work and in leisure time by using a thigh-born accelerometer (Actigraph)

From: Intra-individual variability in day-to-day and month-to-month measurements of physical activity and sedentary behaviour at work and in leisure-time among Danish adults

  No. Days, 80% reliability No. Days, 85% reliability No. Days, 90% reliability
Work sit (min) 4.7 6.7 10.6
Work stand (min) 4.2 5.9 9.4
Work steps 4.0 5.7 9.0
Work MVPA (min) 4.2 5.9 9.4
Leisure sit (min) 5.5 7.8 12.4
Leisure stand (min) 4.7 6.7 10.6
Leisure steps 6.8 9.6 15.3
Leisure MVPA (min) 5.8 8.2 13.0
Total sit (min) 4.0 5.7 9.0
Total stand (min) 3.0 4.3 6.8
Total steps 5.3 7.5 11.9
Total MVPA (min) 5.1 7.2 11.5