Pulse Rate Recovery Exponential Decay Analysis
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Solution Overview
Problem
Current methods for evaluating cardiovascular fitness require controlled clinical settings, which are inconvenient and costly, limiting the frequency of health assessments and missing important changes in cardiovascular health between visits.
Innovation Solution
A system of sensors that collect and process pulse rate data outside clinical settings, allowing for the determination of exponential decay in pulse rate recovery, even during non-prescribed physical activities and uncontrolled recovery periods, using ECG and PPG sensors to monitor cardiovascular health continuously.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If controlled clinical procedures are used to evaluate cardiovascular fitness, then measurement precision is improved, but ease of operation and accessibility deteriorate due to requiring medical supervision and controlled settings
Solution Approach 1:
The system enables subjects to perform self-monitored physical activities and recoveries without medical practitioner supervision. The monitoring device automatically collects pulse rate data during the subject's own physical activities and subsequent recovery periods, eliminating the need for controlled clinical procedures while maintaining assessment capability through automated data collection and exponential decay analysis
Solution Approach 2:
The monitoring device serves multiple functions: it collects pulse rate data during various types of physical activities (not just prescribed exercises), tracks recovery periods of different durations, and automatically analyzes the data to determine exponential decay rates. This multi-functionality allows the device to replace multiple specialized clinical assessment tools
2Reliability
If frequent cardiovascular assessments are conducted in controlled settings, then reliability of health monitoring is improved, but loss of time and healthcare costs increase
Solution Approach 1:
The system enables continuous monitoring of cardiovascular health by collecting pulse rate data during the subject's daily physical activities and recovery periods. Rather than requiring discrete, scheduled clinical visits, the device continuously gathers data whenever the subject engages in physical activity followed by recovery, providing ongoing health assessment without interrupting normal life
Solution Approach 2:
The system performs periodic assessments automatically by detecting multiple cycles of physical activity followed by recovery periods. Each activity-recovery cycle provides data for exponential decay analysis, allowing the system to accumulate multiple measurements over time and provide reliable cardiovascular fitness evaluation through periodic, naturally-occurring assessment opportunities
3Measurement precision
If complete peak pulse rate and resting pulse rate data are collected, then measurement precision is improved, but device complexity and data processing requirements increase
Solution Approach 1:
The system successfully determines exponential decay rates using only partial recovery data - specifically, the period from peak pulse rate to a lower pulse rate that occurs before the subject's complete resting pulse rate is reached. This partial action approach provides sufficient information for cardiovascular fitness assessment without requiring the subject to remain at rest until complete recovery, thereby simplifying the data collection process and reducing the need for extended monitoring periods
Data Source
AI summary
Example embodiments assess cardiovascular health by receiving, from at least one monitoring device, pulse rate data from a subject. The pulse rate data includes pulse rate measurements and corresponding measurement timestamps. The embodiments select, with at least one processor, a plurality of recovery periods in the pulse rate data. Each recovery period corresponds to a respective decrease in pulse rate from a respective upper pulse rate to a respective lower pulse rate. The respective upper pulse rate is less than a peak pulse rate of the subject or the respective lower pulse rate is greater than a resting pulse rate of the subject. The embodiments determine, with the at least one processor, an exponential decay from the plurality of selected recovery periods. The exponential decay characterizes a pulse rate recovery for the subject. The embodiments provide, via a user interface, the pulse rate recovery based on the exponential decay.