A Smartphone Application to Evaluate Energy Expenditure and Duration of Activities for Overweight and Obese People

The 13 volunteers in controlled conditions performed each of the nine activities several times according to the activity scenario: sitting, slow, normal and brisk walking, climbing and descending stairs (eight floors), standing, slow running and taking public transportation (tramway). The duration of each activity varied from 2 to 20 minutes.

The spontaneous activities of 30 volunteers were recorded in the free-living conditions for a full day selected either during the week or the weekend.