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Table 1 Description of equipment and software

From: Mechanical and free living comparisons of four generations of the Actigraph activity monitor

Model Dimensions (cm) Band pass (Hz) Dynamic range (g) Sampling frequency (Hz) Accelerometer Firm ware
AM7164 5.1 x 4.1 x 1.5 0.21-2.28 0.05-2.13 10 Hz Piezoelectric v. 2.2
GT1M 3.8 x 3.7 x 1.8 0.25-2.5 0.05-2.5 30 Hz Solid state (MEMS) v. 7.5.0
GT3X 3.8 x 3.7 x 1.8 0.25-2.5 ± 3 30 Hz Solid state (MEMS) v. 4.4.0
GT3X+ 4.6 x 3.3 x 1.5 0.25-2.5 ± 6 30-100 Hz Solid state (MEMS) v. 2.1.0
  1. Micro electro-mechanical system (MEMS).
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