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. 2019 Feb 26;8(2):e11630. doi: 10.2196/11630

Table 2.

Sensor modalities and corresponding sampling frequencies recorded by the sensor bracelet.

Sensor modality Frequency of data
3-axis accelerometer 100 Hz
3-axis gyroscope 100 Hz
Skin temperature sensing 50 Hz
Reference temperature sensing 50 Hz
Photoplethysmography 50 Hz
Bluetooth beacon recording On every Bluetooth event