Physiological Assessment Scale with Impedance Plethysmography
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Solution Overview
Problem
Current fitness testing technologies lack an efficient and user-friendly method to assess physiological changes during exertion and recovery, limiting the accuracy and user engagement in monitoring fitness levels and cardiovascular health.
Innovation Solution
A multi-function scale with integrated sensor circuitry and a display that collects and analyzes physiological data, including cardiovascular information and body composition, by guiding users through exertion and recovery phases, providing real-time feedback and personalized fitness recommendations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If fitness testing is conducted using current technologies, then physiological data can be obtained, but the assessment accuracy during exertion and recovery phases is limited
Solution Approach 1:
The patent combines multiple functions into a single integrated scale device: weight measurement, body composition analysis via bioelectrical impedance, and cardiovascular monitoring via impedance plethysmography. This merging allows comprehensive physiological assessment during rest, exertion, and recovery phases without requiring multiple separate devices, thereby improving measurement precision while managing device complexity.
Solution Approach 2:
The scale is designed as a universal device that can perform multiple functions: traditional weight measurement, body fat percentage calculation, muscle mass assessment, and cardiovascular health monitoring. The same hardware platform (sensors, circuitry, processor) serves multiple physiological assessment purposes, enabling accurate tracking across different exertion levels and recovery states.
2Measurement precision
If comprehensive physiological monitoring is implemented, then fitness assessment accuracy improves, but user engagement and ease of operation decrease
Solution Approach 1:
The system automatically guides users through the entire fitness assessment process without manual intervention. The processor controls when to measure weight, when to perform impedance measurements, how to calculate various physiological parameters, and how to present results. Users simply step on the scale and follow basic prompts, while the system handles the complex multi-phase testing protocol, thereby maintaining high accuracy while preserving ease of operation.
Solution Approach 2:
The scale provides immediate feedback to users through the display interface, showing real-time or near-real-time physiological data including weight, body composition, and cardiovascular metrics. The system compares measurements across rest, exertion, and recovery phases to provide actionable fitness insights, keeping users engaged through tangible results and progress tracking.
3Measurement precision
If multiple physiological parameters are measured simultaneously, then cardiovascular health monitoring improves, but the device complexity increases
Solution Approach 1:
The patent merges cardiovascular monitoring functionality into the existing body composition analysis circuitry by using the same foot contact electrodes and impedance measurement system. Instead of adding separate ECG electrodes or pressure sensors, the system utilizes impedance plethysmography through the same bioelectrical impedance analysis (BIA) circuitry, thereby improving cardiovascular monitoring capability without proportionally increasing device complexity.
Solution Approach 2:
The impedance measurement system serves dual purposes: traditional body composition analysis (fat mass, muscle mass, body water) and cardiovascular parameter monitoring (heart rate, pulse wave velocity, arterial stiffness). The same hardware components—electrodes, current sources, voltage sensors, and signal processing circuitry—perform multiple physiological assessment functions, optimizing the complexity-to-functionality ratio.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate and engaging fitness assessments by tracking physiological changes during exertion and recovery, offering users actionable insights into their cardiovascular health and fitness levels, promoting improved physical conditioning.
Implementation Method 1
a support structure including the platform region and sensor circuitry therein
Implementation Method 2
Impedance measurements can be made through the feet to measure fat percentage, muscle mass percentage, and body water percentage
Implementation Method 3
foot-impedance-based cardiovascular measurements can be made for an electrocardiogram (ECG) and sensing the properties of blood pulsations in the arteries, also known as impedance plethysmography (IPG), where both techniques can be used to quantify heart rate
Data Source
AI summary
Physiological assessment scale systems and methods are implemented using a variety of approaches. According to one implementation, a scale measures the physiological data of a user engaging sensor circuitry on a platform region of the scale. In a physiological assessment mode, physiological data of the user is detected at respective states of physical exertion. The physiological data is then processed by user-targeted circuitry to determine physiological parameters of the user pertaining to the respective physical exertion states, such as may pertain to an increase in exertion or a reduction in exertion. These physiological parameters may, for example, be used to provide an indication of the physical health and fitness of the user. Such parameters may then be associated with the user and saved to a data-access circuit, and also forwarded to a display which communicates the physiological parameters among other information to the user through the platform region.