Open AccessEarbud-Based Sensor for the Assessment of Energy Expenditure, HR, and V˙O2max
Author(s) -
S. F. LeBoeuf,
M. E. Aumer,
William E. Kraus,
Johanna L. Johnson,
Brian D. Duscha
Publication year - 2014
Publication title -
medicine and science in sports and exercise
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.703
H-Index - 224
eISSN - 1530-0315
pISSN - 0195-9131
DOI - 10.1249/mss.0000000000000183
Subject(s) - benchmark (surveying) , photoplethysmogram , computer science , accelerometer , bruce protocol , simulation , data set , treadmill , real time computing , artificial intelligence , medicine , telecommunications , heart rate , physical therapy , geodesy , blood pressure , wireless , radiology , geography , operating system
The goal of this program was to determine the feasibility of a novel noninvasive, highly miniaturized optomechanical earbud sensor for accurately estimating total energy expenditure (TEE) and maximum oxygen consumption (VO2max). The optomechanical sensor module, small enough to fit inside commercial audio earbuds, was previously developed to provide a seamless way to measure blood flow information during daily life activities. The sensor module was configured to continuously measure physiological information via photoplethysmography and physical activity information via accelerometry. This information was digitized and sent to a microprocessor where digital signal-processing algorithms extract physiological metrics in real time. These metrics were streamed wirelessly from the earbud to a computer.