K. Giannakouris, Ageing characterises the demographic perspectives of the European societies, 2008.

K. K. Ho, J. L. Pinsky, W. B. Kannel, and D. Levy, The epidemiology of heart failure: The Framingham Study, Journal of the American College of Cardiology, vol.22, issue.4, pp.6-13, 1993.
DOI : 10.1016/0735-1097(93)90455-A

M. Weiser, The Computer for the 21st Century, Scientific American, vol.265, issue.3, pp.94-104, 1991.
DOI : 10.1038/scientificamerican0991-94

T. Kleinberger, M. Becker, E. Ras, A. Holzinger, and P. Müller, Ambient Intelligence in Assisted Living: Enable Elderly People to Handle Future Interfaces. Universal Access in HCI, pp.103-112, 2007.
DOI : 10.1007/978-3-540-73281-5_11

K. S. Mukasa, A. Holzinger, and A. Karshmer, Workshop on intelligent user interfaces for ambient assisted living, Proceedings of the 13th international conference on Intelligent user interfaces, IUI '08, 2008.
DOI : 10.1145/1378773.1378856

M. S. Raisinghani, A. Benoit, J. Ding, M. Gomez, K. Gupta et al., Ambient intelligence: Changing forms of human-computer interaction and their social implications, Journal of Digital Information, vol.5, 2006.

C. Röcker and M. Ziefle, Current Approaches to Ambient Assisted Living. International Conference on Future Information Technology and Management Science & Engineering, pp.6-14, 2012.

S. Lahlou, Identity, social status, privacy and face-keeping in digital society, Social Science Information, vol.4, issue.5, pp.299-330, 2008.
DOI : 10.2307/1321160

W. Wilkowska and M. Ziefle, Privacy and data security in E-health: Requirements from the user???s perspective, Health Informatics Journal, vol.39, issue.3, pp.191-201, 2012.
DOI : 10.1007/s10439-011-0407-1

E. D. Mynatt and W. A. Rogers, Developing technology to support the functional independence of older adults, Ageing International, vol.6, issue.1, pp.24-41, 2001.
DOI : 10.1016/B978-044481862-1.50075-3

S. Meyer and H. Mollenkopf, Home Technology, Smart Homes, and the Aging User Aging Independently: Living Arrangements and Mobility, pp.148-161, 2003.

M. Ziefle, C. Röcker, W. Wilkowska, K. Kasugai, L. Klack et al., A Multi-Disciplinary Approach to Ambient Assisted Living, Health, Assistive Technologies and Applications for Assisted Living: Challenges and Solutions, pp.76-93, 2011.
DOI : 10.4018/978-1-60960-469-1.ch004

C. C. Abt, Serious Games, 1987.
URL : https://hal.archives-ouvertes.fr/hal-00702964

D. Michael and S. Chen, Serious Games: Games That Educate, Train and Inform, 2006.

D. Premack, Toward empirical behavior laws: I. Positive reinforcement., Psychological Review, vol.66, issue.4, pp.219-233, 1959.
DOI : 10.1037/h0040891

J. Huizinga, Homo Ludens: A Study of the Play-Element in Culture, Pantheon, 1939.

G. N. Lewis and J. A. Rosie, Virtual reality games for movement rehabilitation in neurological conditions: how do we meet the needs and expectations of the users?, Disability and Rehabilitation, vol.21, issue.22, pp.1880-1886, 2012.
DOI : 10.1037/0278-7393.15.2.352

A. Macvean and J. Robertson, Understanding exergame users' physical activity, motivation and behavior over time, Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, CHI '13, pp.1251-1260, 2013.
DOI : 10.1145/2470654.2466163

K. Tanaka, J. Parker, G. Baradoy, D. Sheehan, J. R. Holash et al., A Comparison of Exergaming Interfaces for Use in Rehabilitation Programs and Research, Loading, vol.6, pp.69-81, 2012.

K. K. Ball, V. G. Wadley, D. E. Vance, and J. D. Edwards, Cognitive Skills: Training, Maintenance, and Daily Usage. Encyclopedia of Applied Psychology, pp.387-392, 2004.
DOI : 10.1016/b0-12-657410-3/00709-1

P. Heyn, B. C. Abreu, and K. J. Ottenbacher, The effects of exercise training on elderly persons with cognitive impairment and dementia: A meta-analysis11No commercial party having a direct financial interest in the results of the research supporting this article has or will confer a benefit upon the author(s) or upon any organization with which the author(s) is/are associated., Archives of Physical Medicine and Rehabilitation, vol.85, issue.10, pp.1694-1704, 2004.
DOI : 10.1016/j.apmr.2004.03.019

M. Fishbein and I. Ajzen, Belief, Attitude, Intention and Behavior: An Introduction to Theory and Research, 1975.

I. Ajzen, The Theory of Planned Behavior. Organizational behavior and human decision processes, pp.179-211, 1991.

F. D. Davis, Perceived Usefulness, Perceived Ease of Use, and User Acceptance of Information Technology, MIS Quarterly, vol.13, issue.3, p.319, 1989.
DOI : 10.2307/249008

V. Venkatesh and F. D. Davis, A Theoretical Extension of the Technology Acceptance Model: Four Longitudinal Field Studies, Management Science, vol.46, issue.2, pp.186-204, 2000.
DOI : 10.1287/mnsc.46.2.186.11926

P. Brauner, A. Holzinger, and M. Ziefle, Ubiquitous Computing at its best: Serious exercise games for older adults in ambient assisted living environments ??? a technology acceptance perspective, EAI Endorsed Transactions on Game-Based Learning, vol.1, issue.4, 2015.
DOI : 10.4108/sg.1.4.e3

K. Arning and M. Ziefle, Different Perspectives on Technology Acceptance : The Role of Technology Type and Age. HCI and Usability for eInclusion, pp.20-41, 2009.

Y. Rogers, The Changing Face of Human-Computer Interaction in the Age of Ubiquitous Computing. HCI and Usability for e-Inclusion, pp.1-19, 2009.

M. Ziefle, C. Rocker, and A. Holzinger, Medical Technology in Smart Homes: Exploring the User's Perspective on Privacy, Intimacy and Trust, 2011 IEEE 35th Annual Computer Software and Applications Conference Workshops, 2011.
DOI : 10.1109/COMPSACW.2011.75

A. D. Fisk and W. A. Rogers, Handbook of human factors and the older adult, 1997.

M. Kliegel, M. A. Mcdaniel, and G. O. Einstein, Plan formation, retention, and execution in prospective memory: A new approach and age-related effects, Memory & Cognition, vol.49, issue.6, pp.1041-1049, 2000.
DOI : 10.1080/027249896392801

F. I. Craik and E. Bialystok, Planning and task management in older adults: Cooking breakfast, Memory & Cognition, vol.120, issue.6, pp.1236-1285, 2006.
DOI : 10.1037/0033-2909.120.2.272

URL : https://link.springer.com/content/pdf/10.3758%2FBF03193268.pdf

G. D-'ydewalle, D. Bouckaert, and E. Brunfaut, Age-Related Differences and Complexity of Ongoing Activities in Time- and Event-Based Prospective Memory, The American Journal of Psychology, vol.114, issue.3, pp.411-423, 2001.
DOI : 10.2307/1423688

K. Arning and M. Ziefle, Effects of age, cognitive, and personal factors on PDA menu navigation performance, Behaviour & Information Technology, vol.28, issue.3, pp.251-268, 2009.
DOI : 10.1080/01449290701679395

J. Goodman, P. Gray, K. Khammampad, and S. Brewster, Using landmarks to support older people in navigation. Mobile Human-Computer Interaction -MobileHCI, pp.38-48, 2004.

J. C. Marquié, L. Jourdan-boddaert, and N. Huet, Do older adults underestimate their actual computer knowledge?, Behaviour & Information Technology, vol.1, issue.4, pp.273-280, 2002.
DOI : 10.1080/01449298208914436

K. Tuomainen and S. Haapanen, Needs of the active elderly for mobile phones) Universal Access in HCI: Inclusive Design in the Information Society, pp.494-498, 2003.

D. Schutter, B. Vandenabeele, and V. , Meaningful Play in Elderly Life, 58th Annual Conference of the International Communication Association, 2008.

J. Nielsen, Usability Engineering, 1993.

C. Snyder, Paper prototyping: the fast and easy way to design and refine user interfaces, 2003.

D. Kieras and P. G. Polson, An approach to the formal analysis of user complexity, International Journal of Man-Machine Studies, vol.22, issue.4, pp.365-394, 1985.
DOI : 10.1016/S0020-7373(85)80045-6

G. Beier, Kontrollüberzeugungen im Umgang mit Technik [Locus of control when interacting with technology], Report Psychologie, vol.24, pp.684-693, 1999.

A. Blais and E. U. Weber, A Domain-Specific Risk-Taking (DOSPERT) scale for adult populations, Judgment and Decision Making Journal, vol.1, pp.33-47, 2006.
DOI : 10.1037/t13084-000

V. Venkatesh, M. G. Morris, G. B. Davis, and F. D. Davis, User acceptance of information technology: Toward a unified view, MIS Quarterly, vol.27, pp.425-478, 2003.

K. Arning and M. Ziefle, Understanding age differences in PDA acceptance and performance, Computers in Human Behavior, vol.23, issue.6, pp.2904-2927, 2007.
DOI : 10.1016/j.chb.2006.06.005

A. Bandura, Self-efficacy: Toward a unifying theory of behavioral change., Psychological Review, vol.84, issue.2, pp.191-215, 1977.
DOI : 10.1037/0033-295X.84.2.191