Number of documents
85
Human Health-related Behaviorist
Research activities
The promotion of a physically active lifestyle and a balanced diet is the core of the public health programmes. The benefits of a regular physical activity and a healthy diet are proved to prevent and/or reduce the risk of developing chronic diseases.
How to evaluate objectively and accurately the spontaneous behaviors in free-living conditions? There are several methods to evaluate behaviors in free-living conditions. The doubly-labelled water technique is the reference method to measure mean total energy expenditure. The accuracy of the other methods varies depending on the technological tool. The main methods to collect behavioral data are activity and dietary questionnaires, and expensives devices for physical activity monitoring. The questionnaires provide subjective and biaised responses. The development of cheap portable monitoring devices not only makes it possible to collect behavioral information at distance and in real time but also facilitates interactions with the user in free-living conditions. We therefore use new information and communication technologies to develop health-related smartphone applications. WellBeNet was developed for data collection in free-living conditions between 2012-2019 . The first part of the application (eMouve) deals with the evaluation of sedentary behaviors, physical activities, and energy expenditure from accelerometry data. The algorithms of prediction were validated against reference methods and published 10 different articles. The second part of the app (NutriQuantic) is dedicated to food choice and collects the number of portions in 12 food categories. The energy intake estimation of portion is being published. The last part of the app (EmoSens) evaluates the emotions and physiological feels before and after the meals. The current work focus on the prediction models of weight status from behaviors recorded by WellBeNet, and behavioral differences between covid-19 related containment period and containment exit.