Real-Time and Continuous Determination of Excess Post-Exercise Oxygen Consumption and the Estimation of Blood Lactate

摘要

The current invention pertains to an apparatus and method for the determination of excess post-exercise oxygen consumption (EPOC) and the estimation of blood lactate levels. While these exercise parameters are traditionally determined using indirect calorimetry and blood sampling, this invention provides a method for the determination of these parameters using heart rate data. A wearable photoplethysmography device for measuring heart rate is included as an exemplary embodiment, however, the method of the current inventions can also be used with heart rate data from any heart rate monitor. In an embodiment of the present invention a supply demand differential equation is used to continuously monitor EPOC in real-time. Furthermore, blood lactate levels can also be estimated as a function of EPOC. Importantly, the process of determining EPOC and blood lactate can be linked to a biomathematical model of human physiology to access additional parameters such as hormonal changes, body composition changes or other physiological fluctuations or transient physiological behavior.

主权项

1. A method for the continuous and/or instantaneous determination of excess post-exercise oxygen consumption (EPOC) and/or estimated blood lactate, the method comprising:
(a) The acquisition of continuous heart rate (HR) data and/or the acquisition of raw physiological signals and the subsequent determination of HR from these physiological signals, (b) The determination of the physiological parameters HRreserve (the difference between an individual's HRmax and HRrest) and VO2 reserve (the difference between an individual's VO2 max and VO2 rest), (c) The calculation of an individual's percentage VO2 max or exercise intensity, (d) The application of a supply-demand differential equation to determine EPOC, (e) The calculation of estimated blood lactate levels as a function of EPOC, (f) The incorporation of a biomathematical model of human physiology so as to access parameters including, but not limited to, transient physiological behaviours and physiological fluctuations, such as hormonal changes and body composition changes. (g) The transmission of the HR and/or EPOC and/or estimated blood lactate data.