Skip to main content

Table 1 Four different calibration settings for the MTI/CSA, varying in Frequency, radius, and acceleration

From: Unit-specific calibration of Actigraph accelerometers in a mechanical setup – Is it worth the effort? The effect on random output variation caused by technical inter-instrument variability in the laboratory and in the field

MTI instruments
Setting Frequency (Hz) Radius (mm) Acceleration (m*s-2) Output (counts*min-1)
#1 1.657 22.0 1.52 ≈ 3000
#2 1.537 35.5 2.08 ≈ 5000
#3 0.950 49.0 1.11 ≈ 3000
#4 1.657 49.0 3.38 ≈ 8000
CSA instruments
#1 1.705 22.0 1.61 ≈ 3000
#2 1.578 35.5 2.22 ≈ 5000
#3 0.970 49.0 1.16 ≈ 3000
#4 1.717 49.0 3.63 ≈ 8000