Arizona State University

Xiaojun Xian

Nongjian Tao

Erica S Forzani

Francis Tsow

A system for measuring and tracking metabolic rate, physical activity and calorie intake. The metabolic rate is measured with a design that features an adaptive sampling mechanism for accurate breath sample collection, optimized flow rate measurement for minimizing backpressure while maximizing accuracy, humidity regulation and water condensation reduction mechanism for reliable performance, as well as breath temperature measurement for volume and humidity corrections. The system further comprises an improved algorithm for determining physical activity such as related energy expenditure, and a mechanism for tracking changes in food intake over time.

Portable metabolic analyzer system

A low back pressure mouthpiece for accurate detection of exhaled nitric oxide (NO) includes a conduit for receiving the exhaled breath from the subject. An oxidizing filter for sample conditioning, wherein the conduit and oxidizing filter operate to produce a back pressure of less than 4 cm HO; and a device for measuring the level of one or more components of the received exhaled breath.

Growing community of inventors

Gilbert, AZ, United States of America

Xiaojun Xian