Many people in Western countries do not follow public health physical activity (PA) recommendations. Web-based interventions provide cost- and time-efficient means of delivering individually targeted lifestyle modification at a population level.
Hansen, A. W., Grønbæk, M., Helge, J. W., Severin, M., Curtis, T., & Tolstrup, J. S. (2012). Effect of a web-based intervention to promote physical activity and improve health among physically inactive adults: a population-based randomized controlled trial. Journal of Medical Internet Research, 14(5), e145. https://doi.org/10.2196/jmir.2109