# US 8,465,397 B2 · Method for guiding a person in physical exercise > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,465,397 B2 - Document ID: US8465397B2 - Status: Granted - Kind: B2 - Application number: 13/251,419 - Filed: 2011-10-03 - Published: 2012-02-09 - Granted: 2013-06-18 - Earliest claimed: 2006-07-04 - Assignees: Firstbeat Technologies Oy - Applicants: Sami Saalasti; Aki Pulkkinen; Joni Kettunen; Mikko Seppanen - Inventors: Sami Saalasti; Aki Pulkkinen; Joni Kettunen; Mikko Seppanen - Web page: https://patentgrep.com/patent/US8465397B2 ## CPC - A61B 5/024: Measuring pulse rate or heart rate - A61B 5/1112: {Global tracking of patients, e.g. by using GPS} - A61B 5/11: Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb {(A61B5/1038 takes precedence; motion detection to correct for motion artifacts in physiological signals A61B5/721)} - A61B 2503/10: Athletes - A61B 2505/09: Rehabilitation or training - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract A method is disclosed for guiding a person to a physiological cumulative state in physical exercise, in which the exercise has a physiological target in the form of a physiological state at the end of the exercise, a duration, and a performance parameter. At the start of the exercise the physiological target is set, as is the value of the performance parameter, and during the exercise at regular intervals: at least one quantity proportional to the momentary intensity is measured. The present physiological state and an estimate of the physiological state at the end of the exercise are calculated with the aid of momentary intensity and the exercise performed. A guidance range for the momentary intensity is defined, in order to reach the target state and the performance parameter. The user is guided by feedback to remain within the guidance intensity range. ## Claims ### Claim 1 Method for guiding a person to a physiological cumulative state during a physical exercise that is proportional to a change in general homeostatic state achieved by exercising, the physical exercise having a duration, an intensity that may vary over the duration of the physical exercise and that at any given moment during the physical exercise has a value defined as a momentary intensity, a physiological target that is the physiological cumulative state of the person at the end of the physical exercise, and a performance parameter, that is one selected from a group consisting of distance, duration of the exercise, speed, power output of work, EPOC change, accumulated EPOC, energy consumption, energy consumed, oxygen consumption, total oxygen consumption, heart-rate level, TRIMP already accumulated, number of steps, work output as a function of speed and inclination of surface, and change in blood lactic acid concentration, the method comprising steps of: setting, at the start of the physical exercise, the physiological target, the performance parameter, and background data depicting the level of the person's performance ability; during the physical exercise at regular intervals: a) measuring by a sensor at least one quantity that is proportional to the momentary intensity and selected from a group consisting of heart rate, speed, pedalling power measured from pedals of a bicycle, % VO2max and rate of EPOC accumulation; b) calculating a present physiological cumulative state of the person and an estimate of the physiological cumulative state at the end of the physical exercise using said measured quantity and a cumulative value of exercise performed; and c) defining an intensity guidance range for the momentary intensity using the calculated values of the present physiological cumulative state and the estimate of the physiological cumulative state at the end of the physical exercise and a criterion for the lower limit of the expanded intensity guidance range such that, at the performance ability level of the person according to the background data, at each moment the physical exercise can still be performed to the end reaching the physiological target and the performance parameter, d) wherein the person is guided by means of feedback to keep the exercise intensity within the defined dynamic intensity guidance range. ### Claim 2 (depends on 1) Method according to claim 1, characterized in that the physiological cumulative state of the person is EPOC. ### Claim 3 (depends on 2) Method according to claim 2, characterized in that the lower limit of the expanded intensity guidance range is defined in such a way that the person may not draw away from the physiological target state faster than a selected criterion based on EPOC dropping. ### Claim 4 (depends on 1) Method according to claim 1, characterized in that the quantity proportional to the momentary intensity is the person's heart rate. ### Claim 5 (depends on 1) Method according to claim 1, characterized in that the performance parameter is the duration of the physical exercise. ### Claim 6 (depends on 5) Method according to claim 5, characterized in that a tolerance, which is at most 10 minutes plus 15% of the set duration, is defined for the duration of the physical exercise. ### Claim 7 (depends on 1) Method according to claim 1, characterized in that the performance parameter is the distance performed by the physical exercise. ### Claim 8 (depends on 7) Method according to claim 7, characterized in that the defined intensity guidance range takes into account a stress profile of a route covering the distance. ### Claim 9 (depends on 8) Method according to claim 8, characterized in that an altitude profile of the route is recorded during the physical exercise. ### Claim 10 (depends on 8) Method according to claim 8, characterized in that a route bank is created, comprising predefined routes that can be uploaded together with their stress profiles. ### Claim 11 (depends on 1) Method according to claim 1, characterized in that the intensity guidance range is defined so that the person is permitted to maintain the momentary intensity, even though the estimate of the physiological cumulative state at the end of the physical exercise may deviate momentarily from the physiological target. ### Claim 12 (depends on 1) Method according to claim 1, characterized in that the person is given feedback visually and/or audibly.