An interventional study of Energy expenditure estimation in controlled conditions and Energy expenditure estimation in free-living conditions in Accelerometry, sponsored by Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement. Completed at 1 site in France. Open to participants aged 18 Years to 60 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-04-03.
Sponsored by Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement · Not applicable, Interventional, and Prevention
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.
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.
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement is the lead sponsor of 50 studies on the registry; 14 are open to participants now.
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Device: Energy expenditure estimation in controlled conditions
Device: Energy expenditure estimation in free-living 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.
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.
Accelerometry
Measures acquired by a smartphone (it contains several sensors, including a tri-axial accelerometer)
Time frame: about 17Hz (duration: 3h30 in controlled conditions; 12 hours in free-living conditions)
Energy expenditure
Sensor: Armband
Time frame: one point recorded each minute for 3h30 in controlled conditions or 12 hours in free-living conditions
Energy expenditure
Sensor: Actiheart
Time frame: one point recorded each minute for 3h30 in controlled conditions or 12 hours in free-living conditions
The record gives a start of Sep 2012, a primary completion of Nov 2012 and a completion of Oct 2013. It does not say whether these dates are actual or estimated.
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This study is completed, as verified in Nov 2013. You cannot join it, but the record below documents what was studied.
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Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement