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Table 1 Characteristics of the activity monitors and software

From: Which activity monitor to use? Validity, reproducibility and user friendliness of three activity monitors

  ActivPAL3 ActiGraph GT3X CAM
Size 53 × 35 × 7 mm 38 × 37 × 18 mm 63 × 45 × 18 mm
Weight 15 g 27 g 100 g
Placement Thigh Waist Thigh
Application Adhesives Elastic belt Elastic belt
Range 2G 3G 4G
Sample frequency 20 Hz 30 Hz 25 Hz
Waterproof Yes No No
Software* ActivPAL software 6.0.2 Actilife 5.10.0 Custom Matlab program
Classifications Sitting/lying Lying Sitting/lying
  Standing Sitting Standing
  Stepping Upright Active
Intensity measure Metabolic Equivalent (MET) Counts Integrated Magnitude Area (IMA)
Epoch length* 1 s 1 s 1 s
Non-wear classification* No Yes (inclinometer code) No
  1. *Device offers more options; the option selected in this study is presented.
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