# US 11,998,802 B2 · Method and apparatus for assessing acclimatization to environmental conditions and to assess fitness level taking into account the environmental conditions and the level of acclimatization > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,998,802 B2 - Document ID: US11998802B2 - Status: Granted - Kind: B2 - Application number: 16/794,466 - Filed: 2020-02-19 - Published: 2020-08-20 - Granted: 2024-06-04 - Earliest claimed: 2019-02-19 - Assignees: Firstbeat Analytics Oy - Applicants: Firstbeat Analytics Oy - Inventors: Mikko Seppänen; Kaisa Hämäläinen; Joonas Korhonen; Sami Saalasti; Aki Pulkkinen; Tero Myllymäki; Wille Hujanen; Joonas Koskinen - Web page: https://patentgrep.com/patent/US11998802B2 ## CPC - A63B 24/0062: {Monitoring athletic performances, e.g. for determining the work of a user on an exercise apparatus, the completed jogging or cycling distance} - A61B 5/0205: Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition - A61B 5/024: Measuring pulse rate or heart rate - A61B 5/02438: {with portable devices, e.g. worn by the patient} - A61B 5/0255: Recording instruments specially adapted therefor - A61B 5/7225: {Details of analogue processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation (input circuits for detecting, measuring, or recording bioelectric or biomagnetic signals A61B5/30; specific diagnostic methods using bioelectric or biomagnetic signals A61B5/316)} - A61B 5/7296: {for compensation of signal variation due to stress unintentionally induced in the patient, e.g. due to the stress of the medical environment or examination} - A61B 5/7475: {User input or interface means, e.g. keyboard, pointing device, joystick} - G16H 20/30: relating to physical therapies or activities, e.g. physiotherapy, acupressure or exercising - G16H 50/30: for calculating health indices; for individual health risk assessment - A61B 5/0833: {Measuring rate of oxygen consumption} - A61B 2503/10: Athletes - A61B 2505/09: Rehabilitation or training - A61B 2560/0247: for compensation or correction of the measured physiological value - A61B 2560/0252: using ambient temperature - A61B 2562/0219: Inertial sensors, e.g. accelerometers, gyroscopes, tilt switches - A61B 2562/029: Humidity sensors - A63B 2024/0065: {Evaluating the fitness, e.g. fitness level or fitness index} - A63B 2220/12: Absolute positions, e.g. by using GPS - A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H) - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - G16H: HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA ## Abstract A system of estimating acclimatization to environmental conditions, and providing a corrected fitness level estimates based on said acclimatization level. The environmental conditions are particularly related to heat and altitude. At first previous training history is provided including a plurality of day records, where each day record includes a date stamp and information regarding altitude and optionally temperature and humidity and training history including timestamp and training load data from executed exercises in stored records. ## Claims ### Claim 1 A wearable electronic device operable to be worn by a user, the device comprising: a data interface; a heart rate sensor configured to generate heart rate information for the user; a memory including training history data for the user; a display; and a processor coupled with the data interface, the heart rate sensor, the display, and the memory, the processor configured to: acquire real-time weather information from a weather source using the data interface, acquire the training history data for the user, calculate a heat dose for the user based on the acquired real-time weather information, the acquired training history data, and the generated heart rate information for the user, and control the display to present an alert corresponding to the calculated heat dose, wherein the processor is further configured to calculate a corrected VO2max value based on the calculated heat dose. ### Claim 2 (depends on 1) The device of claim 1, wherein the processor is further operable to calculate a heat acclimation value based on the calculated heat dose, wherein the displayed alert provides an indication whether the user is ready to exercise based on the calculated heat acclimation value. ### Claim 3 (depends on 1) The device of claim 1, further including a GPS receiver configured to generate position and speed information for the user, wherein processor is configured to calculate the heat dose utilizing the generated position and speed information, the real-time weather information, and the acquired training history data. ### Claim 4 (depends on 1) The device of claim 1, wherein the processor is further configured to update the training history data stored in the memory utilizing the generated heart rate information and real-time weather information. ### Claim 5 (depends on 1) The device of claim 1, wherein the stored training history data includes VO2max information. ### Claim 6 A wearable electronic device operable to be worn by a user, the device comprising: a data interface; a heart rate sensor configured to generate heart rate information for the user; a memory including training history data for the user, the training history data including VO2max information; GPS receiver configured to generate position and speed information for the user a display; and a processor coupled with the data interface, the heart rate sensor, the display, the GPS receiver, and the memory, the processor configured to: acquire real-time weather information from a weather source using the data interface, acquire the training history data for the user, calculate a heat dose for the user based on the acquired real-time weather information, the acquired training history data, the generated position and speed information, and the generated heart rate information for the user, calculate a heat acclimation value based on the calculated heat dose, calculate a corrected VO2max value based on the calculated heat dose, update the training history data stored in the memory utilizing the generated heart rate information and the real-time weather information, and control the display to present the corrected VO2max value and an alert indicating whether the user is ready to exercise based on the calculated heat acclimation value.