Table 8.

Fall characteristic attributes and sensor data source.

Characteristic Attribute	Sensor Data for Extraction of Relevant Parameters/Features
Inactivity (post-fall period of inactivity)	Accelerometer (wearable)
Acceleration peak (high movement intensity) from impact with the fall surface	Accelerometer (wearable)
Rotation of body trunk	Gyroscope (wearable)
Change in body position (orientation and tilt angle)	Accelerometer, Magnetometer
Change in postural height or altitude	Barometer (wearable)
Vibration from impact with the fall surface	Accelerometer (fixed)
Sound from impact with the fall surface	Microphone (wearable or fixed)
Direction of fall (backward, forward, etc.) which could reveal its cause	Accelerometer (wearable)