A Smartphone Application to Evaluate Energy Expenditure and Duration of Moderate-intensity Activities

NCT ID: NCT01995253

Last Updated: 2024-04-03

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 16 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2012-09-30
• Study Completion Date: 2013-10-31

Brief Summary

The aim of this study was to find functions for estimating energy expenditure in free-living conditions. This method was based on accelerometry data acquired from a smartphone worn in a trouser pocket. The developed functions have been compared to the estimations provided by two research devices named Armband and Actiheart.

Detailed Description

There is a growing interest in evaluating physical activity and energy expenditure (EE) to provide feedback to the user. The use of mass-market sensors such as accelerometers offers a promising solution for the general public due to the growing smartphone market over the last decade.

Thus, the proposed EE estimation function has been created using accelerometry data collected from 10 volunteers equipped with a smartphone and two research sensors (Armband and Actiheart) used to estimate EE during several controlled activities. The research sensors' data serves as reference during the creation and evaluation of the proposed function.

It has been evaluated with data of 6 other volunteers in free-living conditions. This new EE function using the smartphone technology is dedicated to light- and moderate-intensity activities, and we believe it can be a new way to help people controlling their daily physical activity level.

Conditions

Accelerometry

Study Design

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

Study Groups

Controlled conditions

Group Type: EXPERIMENTAL

Energy expenditure estimation in controlled conditions

Intervention Type: DEVICE

Volunteers were asked to perform several activities such as walking at different paces, running, sitting, standing still or taking public transportation for about 3h30 They wore 2 research sensors that estimate energy expenditure: Armband and Actiheart. They also wore a smartphone (in a front pant pocket) that collected accelerometry data.

Free-living conditions

Group Type: EXPERIMENTAL

Energy expenditure estimation in free-living conditions

Intervention Type: DEVICE

Volunteers were asked to wear sensors during about 12 hours, one day. They wore 2 research sensors that estimate energy expenditure: Armband and Actiheart. They also wore a smartphone (in a front pant pocket) that collected accelerometry data.

Interventions

Energy expenditure estimation in controlled conditions

Volunteers were asked to perform several activities such as walking at different paces, running, sitting, standing still or taking public transportation for about 3h30 They wore 2 research sensors that estimate energy expenditure: Armband and Actiheart. They also wore a smartphone (in a front pant pocket) that collected accelerometry data.

Intervention Type: DEVICE

Energy expenditure estimation in free-living conditions

Volunteers were asked to wear sensors during about 12 hours, one day. They wore 2 research sensors that estimate energy expenditure: Armband and Actiheart. They also wore a smartphone (in a front pant pocket) that collected accelerometry data.

Intervention Type: DEVICE

Eligibility Criteria

Inclusion Criteria

• men and women
• age: 18-60 years
• BMI between 18.5 and 25 kg/m²
• subject considered as healthy after clinical examination and medical questionnaire
• women of childbearing age: negative beta-HCG
• subject with normal rest electrocardiogram (validated by a cardiologist)
• subject with normal blood pressure (<140/90 mm Hg) with or without medical treatment
• subject with no foot pad problem
• subject giving his/her written informed consent
• subject willing to comply with study procedures
• affiliated to National Health Insurance

Exclusion Criteria

• respiratory failure or cardiovascular problem
• known cardiac decompensation or myocardial infarction
• surgery made less than 6 months before the study beginning
• pregnant women and nursing mother
• current infectious pathology
• abnormal electrocardiogram
• not affiliated to national health insurance people
• under legal guardianship
• refusal to sign informed consent
• refusal to be registered on the national volunteers data file
• currently participating or who having got 4500€ in this year before to have participated in another clinical trial

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 60 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Almerys

OTHER

Sponsor Role: collaborator

Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement

OTHER

Sponsor Role: lead

Responsible Party

Martine DUCLOS

PUPH

Responsibility Role: PRINCIPAL_INVESTIGATOR

Locations

Centre de Recherche en Nutrition Humaine Auvergne

Clermont-Ferrand, , France

Countries

France

Other Identifiers

2012-A00809-34

Identifier Type: OTHER

Identifier Source: secondary_id

AU979

Identifier Type: -

Identifier Source: org_study_id