The number of studies and publications do not always correspond (e.g., a publication may include several studies or one study may be explained in several publications)..
Bickmore TW, Silliman RA, Nelson K, Cheng DM, Winter M, et al.. A randomized controlled trial of an automated exercise coach for older adults. J Am Geriatr Soc 2013;61:1676–83.
Freene N. Physiotherapist-led home-based physical activity program versus community group exercise for middle-aged adults: quasi-experimental comparison. Open J Prev Med 2013;3.
Freene N, Waddington G, Davey R, Cochrane T.Longitudinal comparison of a physiotherapist-led, home-based and group-based program for increasing physical activity in community-dwelling middle-aged adults. Aust J Prim Health 2015;21:189–96.
Irvine AB, Gelatt VA, Seeley JR, Macfarlane P, Gau JM. Web-based intervention to promote physical activity by sedentary older adults: randomized controlled trial. J Med Internet Res 2013;15:e19.
Jarvis KL, Friedman RH, Heeren T, Cullinane PM. Older women and physical activity: using the telephone to walk. Women’s Health Issues 1997;7:24–9.
Kim BH, Glanz K. Text messaging to motivate walking in older African Americans: a randomized controlled trial. Am J Prev Med 2013;44:71–5.
King AC, Friedman R, Marcus B, Castro C, Napolitano M, et al. Ongoing physical activity advice by humans versus computers: the community health advice by telephone (CHAT) trial. Health Psychol 2007;26:718–27.
King AC, Ahn DK, Oliveira BM, Atienza AA, Castro CM, et al. Promoting physical activity through hand-held computer technology. Am J Prev Med 2008;34:138–42.
King AC, Bickmore TW, Campero MI, Pruitt LA, Yin JL. Employing virtual advisors in preventive care for underserved communities: results from the COMPASS study. J Health Commun 2013b;18:1449–64.
Kolt GS, Schofield GM, Kerse N, Garrett N, Oliver M. Effect of telephone counseling on physical activity for low-active older people in primary care: a randomized, controlled trial. J Am Geriatr Soc 2007;55:986–92.
Martin SS, Feldman DI, Blumenthal RS, Jones SR, Post WS, et al. mActive: a randomized clinical trial of an automated mHealth intervention for physical activity promotion. J Am Heart Assoc 2015;4.
Martinson BC, Crain AL, Sherwood NE, Hayes M, Pronk NP, et al. Maintaining physical activity among older adults: six-month outcomes of the keep active Minnesota randomized controlled trial. Prev Med 2008;46:111–9.
Martinson BC, Sherwood NE, Crain AL, Hayes MG, King AC, et al. Maintaining physical activity among older adults: 24-month outcomes of the keep active Minnesota randomized controlled trial. Prev Med 2010;51: 37–44.
Mouton A, Cloes M.Efficacy of a web-based, center-based or combined physical activity intervention among older adults. Health Educ Res 2015;30:422–35.
Müller AM, Khoo S, Morris T.Text messaging for exercise promotion in older adults from an upper-middle-income country: randomized controlled trial. J Med Internet Res 2016;18:e5.
Muntaner-Mas A, Vidal-Conti J, Borras PA, Ortega FB, Palou P. Effects of a whatsapp-delivered physical activity intervention to enhance health-related physical fitness components and cardiovascular disease risk factors in older adults. J Sports Med Phys Fitness 2017;57:90–102.
Peels DA, Bolman C, Golsteijn RH, de Vries H, Mudde AN, et al. Long-term efficacy of a printed or a web-based tailored physical activity intervention among older adults. Int J Behav Nutr Phys Act 2013;10:104.
Peels DA, van Stralen MM, Bolman C, Golsteijn RHJ, de Vries H, et al. The differentiated effectiveness of a printed versus a web-based tailored physical activity intervention among adults aged over 50. Health Educ Res 2014;29:870–82.
Pinto BM, Goldstein MG, Ashba J, Sciamanna CN, Jette A. Randomized controlled trial of physical activity counseling for older primary care patients. Am J Prev Med 2005;29:247–55.
Thompson WG, Kuhle CL, Koepp GA, McCrady-Spitzer SK, Levine JA. “Go4Life” exercise counseling, accelerometer feedback, and activity levels in older people. Arch Gerontol Geriatr 2014;58:314–9.
Van Dyck D, Plaete J, Cardon G, Crombez G, De Bourdeaudhuij I. Effectiveness of the self-regulation eHealth intervention ‘MyPlan1.0.’ on physical activity levels of recently retired Belgian adults: a randomized controlled trial. Health Educ Res 2016;31:653–64.
van Stralen MM, de Vries H, Mudde AN, Bolman C, Lechner L. The working mechanisms of an environmentally tailored physical activity intervention for older adults: a randomized controlled trial. Int J Behav Nutr Phys Act 2009;6.
van Stralen MM, de Vries H, Bolman C, Mudde AN, Lechner L.Exploring the efficacy and moderators of two computer-tailored physical activity interventions for older adults: a randomized controlled trial. Ann Behav Med 2010;39:139–50.
van Stralen MM, de Vries H, Mudde AN, Bolman C, Lechner L.The longterm efficacy of two computer-tailored physical activity interventions for older adults: main effects and mediators. Health Psychol 2011;30:442–52.
Wijsman CA, Westendorp RGJ, Verhagen E, Catt M, Slagboom E, et al. Effects of a web-based intervention on physical activity and metabolism in older adults: randomized controlled trial. J Med Internet Res 2013;15:13.