Acti4

Developed by the National Research Centre for the Working Environment in Copenhagen.

The Acti4 program is a Matlab script for analysis of data recorded by ActiGraph (AG) model GT3Xplus, Axivity model AX3, ActivPAL or Sens accelerometers and an ActiHeart (AH) or a Bod-yguard2 (Firstbeat) monitor for heart rate recording. The input data are typically recorded by a set of accelerometer units attached to the thigh, hip, arm and trunk during several days (e.g. 7 days) and AH data for 3-4 days. The output data includes analysis of activity type (lying, sitting, standing, walking etc.), arm and trunk inclination and heart rate load for selected periods of work and leisure.

Documentation

If you are using acti4, you can locate the user manual, detailed explanations of the output parameters, and various documents that describe the functionality and usage instructions for acti4 within the documentation folder.

Legacy

Acti4 has reached its final version (v2007, July 2020). We have decided not to pursue further development or updates for this software, as we are focusing on developing the python based system called Motus instead (link below). Please note, while there will be no new updates, the current version will remain available for download and use.

Publications

Detection of physical activity types using triaxial accelerometers

Validity of the Acti4 method for detection of physical activity types in free-living settings: comparison with video analysis

Comparison of physical behavior estimates from three different thigh-worn accelerometers brands: a proof-of-concept for the Prospective Physical Activity, Sitting, and Sleep consortium (ProPASS)

Validation of a Commercial and Custom Made Accelerometer-Based Software for Step Count and Frequency during Walking and Running

Validity of the Acti4 software using ActiGraph GT3X+accelerometer for recording of arm and upper body inclination in simulated work tasks

Detection of kneeling and squatting during work using wireless triaxial accelerometers

Citation

If you are using Acti4 in your research, you can use the following citation

APA:

The National Research Centre for the Working Environment (NFA). (2020). Acti4 (Version v2007) [Computer software]. https://github.com/motus-nfa/Acti4

BibTex:

@software{The_National_Research_Centre_for_the_Working_Environment_NFA_Acti4_2020,
author = {The National Research Centre for the Working Environment (NFA)},
month = jul,
title = {{Acti4}},
url = {https://github.com/motus-nfa/Acti4},
version = {v2007},
year = {2020}
}

Systems developed based on Acti4

Motus - link will be available once github repository is published

ActiPASS