Fractal Analysis Linking Physical Activity Patterns, Health, and Mortality

Case ID:

This invention is a novel method for linking patterns from accelerometers to health and mortality problems by measuring fractal complexity.


Accelerometers are devices that measure proper acceleration and have multiple applications in different industries. Typically, accelerometers are found in devices that monitor and track physical activity for health-related purposes. The clinical utility of the information tracked by these devices is highly under-utilized. This invention uses de-trended fluctuation analysis (DFA) on raw data taken from wearable accelerometers to allow professionals and the public to monitor physiological health and mortality risk.



  • Accelerometer industry
  • Health monitoring/tracking
  • Behavioral health
  • Exercise



  • Measures fractal complexity
  • Predicts health outcomes
  • Non-invasive biomarker
  • Tracks aging and mortality risk
Patent Information:
Contact For More Information:
Lewis Humphreys
Licensing Manager, Eller College of Mngmt & OTT
The University of Arizona
Lead Inventor(s):
David Raichlen
Gene Alexander
Yann Klimentidis