Smartphone Body Composition and VO2 Max Measurement
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Solution Overview
Problem
Current methods for measuring body composition and aerobic fitness are limited by their cost, portability, and accessibility, particularly for field settings, and lack accurate, user-friendly tools for individuals and practitioners in sport performance and allied health care fields.
Innovation Solution
A smartphone-based system that estimates body composition from a single two-dimensional image by measuring anatomical dimensions, calculates body density, and determines VO2 max through movement analysis, providing a comprehensive fitness assessment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If highly accurate body composition measurement techniques (DXA, ADP, UWW) are used, then measurement precision is improved, but device complexity and cost increase, and portability decreases
Solution Approach 1:
The patent uses a smartphone camera to capture a two-dimensional image of the individual, which serves as a simplified copy or representation of the actual body. This image is then processed to extract body composition information, replacing the need for complex physical measurement devices like DXA scanners or underwater weighing equipment.
Solution Approach 2:
The patent replaces mechanical and physical measurement systems (such as x-ray equipment, air displacement chambers, and underwater weighing apparatus) with a computational imaging system. The system uses software algorithms to analyze a 2D image and calculate body composition metrics, substituting complex mechanical systems with optical and computational methods.
2Measurement precision
If highly accurate body composition measurement techniques are used, then measurement precision is improved, but portability and accessibility worsen
Solution Approach 1:
The patent leverages the smartphone camera, a device that is already universally owned and carried by most individuals, to perform body composition analysis. This multi-functional approach allows the smartphone to serve both as a communication device and as a medical assessment tool, eliminating the need for specialized equipment and making the measurement accessible anywhere with lighting conditions suitable for imaging.
3Measurement precision
If conventional VO2 max testing protocols are used, then measurement precision is improved, but ease of operation and subject comfort worsen
Solution Approach 1:
The patent enables individuals to perform their own aerobic fitness assessment using only their smartphone. The application guides users through a simple walk or run at their own pace, automatically tracking distance and time, and calculating VO2 max without requiring laboratory equipment, trained technicians, or maximal exhaustion protocols.
4Ease of operation
If field tests for aerobic fitness are used, then portability is improved, but measurement precision and reliability worsen
Solution Approach 1:
The patent changes the measurement parameters from requiring precise control of external conditions (such as track distance markers and timing equipment) to using the smartphone's built-in sensors (GPS, accelerometer, gyroscope) to continuously track movement parameters. This allows for portable field testing while maintaining precision through automated sensor-based measurement of distance, time, and exercise intensity.
Data Source
AI summary
Methods and systems are provided for measuring anatomical dimensions from a single two-dimensional (2D) digital image. The digital image is taken from the front/anterior view using a mobile, handheld communication device. The linear measurements are used to estimate the body volume of the individual. Total body density is calculated from estimated body volume and body weight. Body composition (fat mass and fat-free mass) of the individual is derived from density using known mathematical conversion formulas. A method for estimating body composition analysis is provided. Systems and methods are provided that determine an individual's fitness by determining body composition of the individual using a picture of the individual, determining the individual's VO2 max based on the individual's movement (e.g., walking and/or running a measured distance over a measured amount of time), and determining the individual's fitness based on the body composition and the determined VO2 max.