A. Bandura, Personal and collective efficacy in human adaptation and change. Advances in psychological science, vol.1, pp.51-71, 1998.

M. Bardus, J. R. Smith, L. Samaha, and C. Abraham, Mobile phone and web 2.0 technologies for weight management: a systematic scoping review, Journal of medical Internet research, vol.17, issue.11, p.259, 2015.

A. M. Beleigoli, A. Q. Andrade, and A. G. Cançado, Web-based digital health interventions for weight loss and lifestyle habit changes in overweight and obese adults: systematic review and meta-analysis, Journal of Medical Internet Research, vol.21, issue.1, p.298, 2019.

J. Bitner, W. T. Faranda, A. R. Hubbert, and V. A. Zeithaml, Customer contributions and roles in service delivery, International journal of service industry management, vol.8, issue.3, pp.193-205, 1997.

E. Brindal, G. A. Hendrie, J. Freyne, and M. Noakes, Incorporating a Static Versus Supportive Mobile Phone App Into a Partial Meal Replacement Program With Face-to-Face Support: Randomized Controlled Trial, JMIR mHealth and uHealth, vol.6, issue.4, 2018.

J. Brug, K. Glanz, P. Van-assema, G. Kok, and G. J. Van-breukelen, The impact of computer-tailored feedback and iterative feedback on fat, fruit, and vegetable intake, Health Education & Behavior, vol.25, issue.4, pp.517-531, 1998.

L. E. Burke, M. B. Conroy, S. M. Sereika, O. U. Elci, M. A. Styn et al., The effect of electronic self-monitoring on weight loss and dietary intake: a randomized behavioural weight loss trial, Obesity, vol.19, issue.2, pp.338-344, 2011.

M. K. Campbell, B. M. Devellis, V. J. Strecher, A. S. Ammerman, R. F. Devellis et al., Improving dietary behavior: the effectiveness of tailored messages in primary care settings, American journal of public health, vol.84, issue.5, pp.783-787, 1994.

J. E. Carins and S. R. Rundle-thiele, Eating for the better: A social marketing review, Public Health Nutrition, vol.17, issue.7, pp.1628-1639, 2000.

B. Cugelman, M. Thelwall, and P. Dawes, Online interventions for social marketing health behavior change campaigns: a meta-analysis of psychological architectures and adherence factors, Journal of Medical Internet Research, vol.13, issue.1, p.17, 2011.

C. C. Diclemente, A. S. Marinilli, M. Singh, and L. E. Bellino, The role of feedback in the process of health behavior change, American journal of health behavior, vol.25, issue.3, pp.217-227, 2001.

S. Dibb, Changing times for social marketing segmentation, Segmentation in social marketing, pp.41-59, 2017.

R. Foy, M. P. Eccles, G. Jamtvedt, J. Young, J. M. Grimshaw et al., What do we know about how to do audit and feedback? Pitfalls in applying evidence from a systematic review, BMC health services research, vol.5, issue.1, p.50, 2005.

J. French and R. Bennett, A hierarchical model of social marketing, Journal of Social Marketing, vol.5, issue.2, pp.139-159, 2015.

C. Garnett, D. Crane, J. Brown, E. Kaner, F. Beyer et al., Reported theory use by digital interventions for hazardous and harmful alcohol consumption, and association with effectiveness: meta-regression, Journal of Medical Internet Research, vol.20, issue.2, p.69, 2018.

, Health effects of overweight and obesity in 195 countries over 25 years, GBD 2015 Obesity Collaborators, vol.377, pp.13-27, 2017.

T. Gill, L. King, and I. Caterson, Obesity prevention: necessary and possible. A structured approach for effective planning, Proceedings of the Nutrition Society, vol.64, issue.2, pp.255-261, 2005.

B. C. Gold, S. Burke, S. Pintauro, P. Buzzell, and J. Harvey-berino, Weight loss on the web: A pilot study comparing a structured behavioural intervention to a commercial program, Obesity, vol.15, issue.1, pp.155-155, 2007.

R. Gordon, L. Mcdermott, and M. Stead, The effectiveness of social marketing interventions for health improvement: what's the evidence? Public Health, vol.120, pp.1133-1139, 2006.

J. Gurevitch, J. Koricheva, S. Nakagawa, and G. Stewart, Meta-analysis and the science of research synthesis, Nature, vol.555, issue.7695, p.175, 2018.

G. H. Guyatt, GRADE guidelines: 5. Rating the quality of evidence-publication bias, Journal of clinical epidemiology, vol.64, pp.1277-1282, 2011.

I. Haapala, N. C. Barengo, S. Biggs, L. Surakka, and P. Manninen, Weight loss by mobile phone: a 1-year effectiveness study, Public health nutrition, vol.12, issue.12, pp.2382-2391, 2009.

J. Harvey-berino, D. West, R. Krukowski, E. Prewitt, A. Vanbiervliet et al., Internet delivered behavioural obesity treatment, Preventive medicine, vol.51, issue.2, pp.123-128, 2010.

C. Hawkes, T. G. Smith, J. Jewell, J. Wardle, R. A. Hammond et al., Smart food policies for obesity prevention, The Lancet, vol.385, issue.9985, pp.2410-2421, 2015.

E. B. Hekler, S. Michie, M. Pavel, D. E. Rivera, L. M. Collins et al., Advancing models and theories for digital behaviour change interventions, American journal of preventive medicine, vol.51, issue.5, pp.825-832, 2016.

S. Hempel, J. N. Miles, M. J. Booth, Z. Wang, S. C. Morton et al., Risk of bias: a simulation study of power to detect study-level moderator effects in metaanalysis, Systematic reviews, vol.2, p.107, 2013.

E. T. Higgins, Promotion and prevention: Regulatory focus as a motivational principle, Advances in experimental social psychology, vol.30, pp.1-46, 1998.

E. Hurkmans, C. Matthys, A. Bogaerts, L. Scheys, K. Devloo et al., Faceto-face versus mobile versus blended weight loss program: randomized clinical trial, JMIR mHealth and uHealth, vol.6, issue.1, 2018.

S. Michie, M. Richardson, M. Johnston, C. Abraham, J. Francis et al., The behaviour change technique taxonomy (v1) of 93 hierarchically clustered techniques: building an international consensus for the reporting of behaviour change interventions, Annals of behavioural medicine, vol.46, issue.1, pp.81-95, 2013.

D. Mohr, P. Cuijpers, and K. Lehman, Supportive accountability: a model for providing human support to enhance adherence to eHealth interventions, Journal of medical Internet research, vol.13, issue.1, p.30, 2011.

E. H. Mory, Feedback research revisited. Handbook of research on educational communications and technology, vol.2, pp.745-783, 2004.

M. A. Napolitano, S. Hayes, G. G. Bennett, A. K. Ives, and G. D. Foster, Using Facebook and text messaging to deliver a weight loss program to college students, Obesity, vol.21, issue.1, pp.25-31, 2013.

E. Oosterveen, F. Tzelepis, L. Ashton, and M. J. Hutchesson, A systematic review of eHealth behavioural interventions targeting smoking, nutrition, alcohol, physical activity and/or obesity for young adults, Preventive medicine, vol.99, pp.197-206, 2017.

K. Patrick, F. Raab, M. A. Adams, L. Dillon, M. Zabinski et al.,

G. J. Norman, A text message-based intervention for weight loss: randomized controlled trial, Journal of medical Internet research, issue.1, p.11, 2009.

C. K. Prahalad and V. Ramaswamy, Co-creation experiences: The next practice in value creation, Journal of interactive marketing, vol.18, issue.3, pp.5-14, 2004.

R. M. Puhl, J. D. Latner, K. O'brien, J. Luedicke, S. Daníelsdóttir et al., , 2015.

, A multinational examination of weight bias: predictors of anti-fat attitudes across four countries, International Journal of Obesity, vol.39, issue.7, p.1166

J. Rivera, A. Mcpherson, J. Hamilton, C. Birken, M. Coons et al., Mobile apps for weight management: a scoping review, JMIR mHealth and uHealth, vol.4, issue.3, p.87, 2016.

S. Rundle-thiele, Rétrospective et perspective d'avenir: un plan d'action pour la recherche en marketing social, Recherche et Applications en Marketing, vol.30, issue.3, pp.133-139, 2015.

S. Rundle-thiele, P. David, and T. Willmott, Social marketing theory development goals: an agenda to drive change, Journal of Marketing Management, vol.35, issue.1-2, pp.160-181, 2019.

K. J. Serrano, M. Yu, K. I. Coa, L. M. Collins, and A. A. Atienza, Mining health app data to find more and less successful weight loss subgroups, Journal of medical Internet research, issue.6, p.18, 2016.

J. R. Shapiro, T. Koro, N. Doran, S. Thompson, J. F. Sallis et al., Text4Diet: a randomized controlled study using text messaging for weight loss behaviors, Preventive medicine, vol.55, issue.5, pp.412-417, 2012.

R. J. Shaw, H. B. Bosworth, S. S. Silva, I. M. Lipkus, L. L. Davis et al., Mobile health messages help sustain recent weight loss. The American journal of medicine, vol.126, pp.1002-1009, 2013.

S. Shawky, K. Kubacki, T. Dietrich, and S. Weaven, Using social media to create engagement: a social marketing review, Journal of Social Marketing, vol.9, issue.2, pp.204-224, 2019.

B. F. Skinner, Operant behaviour, American psychologist, vol.18, issue.8, p.503, 1963.

C. M. Schmucker, Systematic review finds that study data not published in full text articles have unclear impact on meta-analyses results in medical research, PloS one, vol.12, p.176210, 2017.

D. F. Tate, E. H. Jackvony, and R. R. Wing, A randomized trial comparing human email counselling, computer-automated tailored counselling, and no counselling in an Internet weight loss program, Archives of internal medicine, vol.166, issue.15, pp.1620-1625, 2006.

N. Tettey, An online evaluation of a new web-based source of information on eating healthy and being active designed for African American women: exploring relationships among personal-level variables and website ratings, 2011.

V. D. Truong, Social marketing: A systematic review of research 1998-2012, Social Marketing Quarterly, vol.20, issue.1, pp.15-34, 2014.

G. Turner-mcgrievy and D. Tate, Tweets, Apps, and Pods: Results of the 6-month Mobile Pounds Off Digitally (Mobile POD) randomized weight-loss intervention among adults, Journal of medical Internet research, issue.4, p.13, 2011.

T. Webb, J. Joseph, L. Yardley, and S. Michie, Using the internet to promote health behaviour change: a systematic review and meta-analysis of the impact of theoretical basis, use of behaviour change techniques, and mode of delivery on efficacy, Journal of medical Internet research, vol.12, issue.1, p.4, 2010.

J. H. West, P. C. Hall, V. Arredondo, B. Berrett, B. Guerra et al., Health behaviour theories in diet apps, Journal of Consumer Health On the Internet, vol.17, issue.1, pp.10-24, 2013.

, Obesity and overweight. Fact sheet, 2018.

T. J. Willmott, B. Pang, S. Rundle-thiele, and A. Badejo, Weight Management in Young Adults: Systematic Review of Electronic Health Intervention Components and Outcomes, Journal of medical Internet research, vol.21, issue.2, p.10265, 2019.

R. R. Wing and R. W. Jeffery, Benefits of recruiting participants with friends and increasing social support for weight loss and maintenance, Journal of consulting and clinical psychology, vol.67, issue.1, 1999.