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Method and system for determining the fitness index of a person

  • US 10,123,730 B2
  • Filed: 04/12/2012
  • Issued: 11/13/2018
  • Est. Priority Date: 04/12/2011
  • Status: Active Grant
First Claim
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1. A method for determining the cardiorespiratory fitness level of a person, with the aid of freely performed exercise, comprising:

  • measuring by a first sensor, a physiological intensity of the person during the exercise session in periods and storing each measured physiological intensity in computation registers, each period being approximately 5 seconds,measuring by a second sensor an external work output of the exercise session simultaneously relative to the measured physiological intensity on each period, and storing each measured external output in the computation registers,determining by an assembly built around a central processing unit (CPU), at each period whether the physiological intensity has stabilized relative to the external work output on the measured period in order to accept the period using a following criteria;

    the physiological intensity is stabilized relative to the external work output, andthe external work output is within a selected range,defining by the assembly built around the central processing unit, a fitness level estimate for each accepted period using a modeled function and the stored physiological intensity and the stored measured external output in the computation registers, and storing each defined fitness level estimate as accepted data points; and

    ,counting a total duration/number of accepted periods, andif said total duration/number of accepted periods exceeds a selected time/value,computing by the assembly built around the central processing unit, a fitness index with the aid of the fitness level estimates in the accepted data, if the total duration/number of accepted periods exceeds a selected time/value.

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