Detecting indoor and outdoor environments using the ActiGraph GT3X+ light sensor in children.

@article{Flynn2014DetectingIA,
  title={Detecting indoor and outdoor environments using the ActiGraph GT3X+ light sensor in children.},
  author={Jennifer I Flynn and Dawn Podulka Coe and Chelsea A Larsen and Brian Rider and Scott A Conger and David Bassett},
  journal={Medicine and science in sports and exercise},
  year={2014},
  volume={46 1},
  pages={201-6}
}
INTRODUCTION Experts recommend children spend more time playing outdoors. The ambient light sensor of the ActiGraph GT3X+ provides lux measurements. A lux is the International System's unit of illumination, equivalent to 1 lm·m. Few studies have established a lux threshold for determining whether a child is indoors or outdoors. PURPOSE This study aimed 1) to assess the reliability of the ActiGraph GT3X+ ambient light sensor, 2) to identify a lux threshold to accurately discriminate between… CONTINUE READING
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