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Physical activity monitoring and intervention using smartphone and mobile app

  • US 8,965,402 B2
  • Filed: 01/17/2013
  • Issued: 02/24/2015
  • Est. Priority Date: 01/19/2012
  • Status: Expired due to Fees
First Claim
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1. Non-transitory, tangible, computer-readable storage media containing a program of instructions configured to cause a mobile computer system that generates a time domain signal that is indicative of steps that a user is taking while carrying the mobile computer system and while running the program of instructions to determine the frequency of those steps by:

  • filtering the time domain signal so as to substantially attenuate frequencies that are lower than 0.5 Hz and higher than 10 Hz;

    transforming the filtered time domain signal into a frequency domain signal;

    equating the step frequency with the frequency of the highest peak in the frequency domain signal; and

    communicating the equated step frequency.

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