Background: Physical activity and healthy nutrition are commonly known as core facets of health. However, recent studies confirm a lack of these aspects in today’s society. With most people lacking time for exercise and cooking, m-health applications may be the means of choice to promote healthier lifestyles. The current study aimed to develop a smartphone intervention app based on scientific theoretical background which uses behavior change techniques (BCT’s) to promote physical activity and healthy eating behavior in a family setting. Methods: A total of at least 30 families will be randomized into one of two groups: an intervention group, receiving three weeks of the m-health intervention, and a waiting list control group. Participants’ daily activity was measured via accelerometry for a duration of one week prior and following the m-health intervention. Moreover, participants completed questionnaires about their daily activity and eating behavior.
Expected results: As of the low count of participants, first descriptive analyses point to an increase in moderate to vigorous physical activity following the intervention. However, ... mehrmore participants will be examined to further study this first impression. Current Stage of work: Until now, four families (n = 10) participated in a pilot study on the intervention. Discussion: This study is the first to establish a m-health intervention in a family setting based on assumptions made by self-determination theory using BCT’s. Preliminary results point to a substantial improvement of healthy lifestyles in all family members. However, further participants need to be examined in order to attain more convincing results