Axivity AX3

Instrument Details

Axivity AX3

Axivity AX3

Physical activity assessment objective

Accelerometer

14th April 2022

Antonia Smith, 

Triaxial accelerometer. MEMS sensor. Raw sampling frequency of between 12.5Hz and 3200Hz with a configurable range of ±2/4/8/16g. The device incorporates a real-time quartz clock, ambient light sensor and temperature sensor. The Axivity AX3 is water resistant up to 1.5 meters.

Instrument Characteristics
acquisition  -> Device
retrospective prospective  -> Prospective
timeframe  -> Weeks
location  -> Ankle
location  -> Thigh
location  -> Waist
location  -> Hip
location  -> Wrist
timeseries  -> Yes
raw aggregated  -> Raw
opensource proprietary  -> Open
raw sampling  -> < 5 ms
resolution  -> < 5 ms
Instrument Estimates
Duration
Intensity
Frequency
Volume
Total physical activity energy expenditure
Type
Posture
Sedentary behaviour
Behaviour pattern: Timing
Behaviour pattern: Bouts
Behaviour pattern: Variability