Validation of a Personal Breath Analyzer for Diet and Energy Expenditure Assessment and Management

NCT ID: NCT02981160

Last Updated: 2017-04-13

Basic Information

• Recruitment Status: WITHDRAWN
• Clinical Phase: NA
• Study Classification: INTERVENTIONAL
• Study Start Date: 2016-12-31
• Study Completion Date: 2018-06-30

Brief Summary

The purpose of the research is to determine energy expenditure rates and diet and/ physical activity metabolic features of an individual using current state technologies and a new technology created at the Center for Bioelectronics and Biosensors at ASU. This is a pilot study which intent is to validate this device for use in the weight loss patient population.

This study will involve research of metabolic physiological parameters that are measured through the breath of the individuals, together with other physical parameters (weight, height, date of birth, fat and lean body composition via bio-impedance, heart rate, blood pressure, and breathing rate) assessed in the clinic, and a questionnaire about diary physical activities. The study will involve withdrawn of breath samples at resting conditions, and under diets or physical activities regimes.

This instrument will assist our patients in terms of tailoring their diet/nutrition through their weight loss journey prior and after surgery. As a new technology, it will be an excellent tool for compliance assessment and engagement with the Weight Loss Program as well as for long term follow up.

Detailed Description

The Breezing® device is a new technology locally invented in the state of Arizona that uses a sensor cartridge and a flow meter to determine the rate of consumed oxygen and produced carbon dioxide in the breath. The sensing technology of the new indirect calorimeter, which used a cell-phone camera as the optical detector. The current Breezing® device uses a code to carry calibration parameters of a single-use sensor cartridge, which can be scanned and recognized by the mobile application (app). The device is 6.0 oz. (170 g), and 1.8 in × 2.1 in × 4.8 in (4.7 cm × 5.4 cm × 12.3 cm), and connects wirelessly to an iOS mobile device, using Bluetooth 4.0 technology.

The mobile device (phone or tablet) receives data from the device, processes information, and then provides test results and summaries through a graphic user interface. It determines the energy expenditure from the measurement of VO2 and VCO2 according to the Weir equation, along with RQ. In addition to the sensor cartridge, the Breezing® device is used with a non-rebreathing 2-valvesmouthpiece.

This new device will provide a more precise information regarding metabolic rate in our Bariatric Patients to better tailor their preoperative diet and monitor their weight loss.

Up to date, this device was never used or validated before in the Bariatric population under this setting.

Conditions

Obesity

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: DIAGNOSTIC
• Blinding Strategy: NONE

Study Groups

Standard Care Group

The participants assigned to this group will follow a standard weight loss program for 12-months. This patients will be instructed by the Weight loss program registered dietitian/diet tech in clinic in terms of nutrition regimen, daily intake and calories.Patients will be followed up monthly as per clinic protocol. All visits will include physical measurements including body mass index (BMI) based on height and weight, blood pressure, and body composition (fat percentage). Body composition will be assessed during clinic visits by bio-impedance. Waist circumference (cm) will be measured at the umbilicus.

Group Type: NO_INTERVENTION

No interventions assigned to this group

Mobile Device Assistant Group

This group will follow the same weight loss protocol, monitoring, and clinic visits as the standard weight loss group described above, but will also use the mobile health tool (Breezing) to track REE every visit. This data will be loaded onto an accompanying electronic pad using the Breezing "app" and will be transmitted electronically to the study investigators who will use the information to adjust dietary and physical activity recommendations and targets. The test will be performed at initial visit, 2 weeks, 1, 3, 6 and 12 months after started.

Group Type: EXPERIMENTAL

Dietary

Intervention Type: OTHER

The REE testing will be done with the Breezing device, a breath analyzer developed at Arizona State University. The Breezing device is an indirect calorimetry analyzer that measures the rate of oxygen consumption and carbon dioxide production, and determines how much energy the body is burning (REE), and the type of nutrients the body uses to produce energy (energy source). The Breezing device is a cellphone-size, battery-operated, portable technology that syncs with smartphones and electronic pads. The patients will be asked to breathe into a mouthpiece connected to the Breezing device; the data will be then beamed wirelessly to the device. The breath analysis data will displayed on the screen in conjunction with an estimate of total calories burned each day (total energy expenditure, TEE).

Interventions

Dietary

The REE testing will be done with the Breezing device, a breath analyzer developed at Arizona State University. The Breezing device is an indirect calorimetry analyzer that measures the rate of oxygen consumption and carbon dioxide production, and determines how much energy the body is burning (REE), and the type of nutrients the body uses to produce energy (energy source). The Breezing device is a cellphone-size, battery-operated, portable technology that syncs with smartphones and electronic pads. The patients will be asked to breathe into a mouthpiece connected to the Breezing device; the data will be then beamed wirelessly to the device. The breath analysis data will displayed on the screen in conjunction with an estimate of total calories burned each day (total energy expenditure, TEE).

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

• Females or Males between 18 and 50 yo
• Class II and Class III Obesity (BMI 35 and above)

Exclusion Criteria

• No Obesity. Patients with normal BMI

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 50 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Arizona State University

OTHER

Sponsor Role: collaborator

University of Arizona

OTHER

Sponsor Role: collaborator

Banner Health

OTHER

Sponsor Role: lead

Responsible Party

Flavia Soto

Bariatric Surgeon

Responsibility Role: PRINCIPAL_INVESTIGATOR

Locations

Banner Gateway Medical Center

Gilbert, Arizona, United States

Banner Estrella Medical Center

Phoenix, Arizona, United States

Countries

United States

Other Identifiers

Breezing Study

Identifier Type: -

Identifier Source: org_study_id