Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Dharani Yerrakalva and Dhrupadh Yerrakalva and Samantha Hajna and Simon Griffin,"Effects of Mobile Health App Interventions on Sedentary Time, Physical Activity, and Fitness in Older Adults: Systematic Review and Meta-Analysis",Journal of Medical Internet Research,1438-8871,JMIR Publications Inc.,2019-11-28,21,11,e14343,https://cir.nii.ac.jp/crid/1362262945366914816,https://doi.org/10.2196/14343