1. FoxSRainieLThe Web at 2520142015-02-28Pew Research Centerhttp://www.pewinternet.org/files/2014/02/PIP_25th-anniversary-of-the-Web_0227141.pdf6WfWyZtqE
2. SmithAOlder Adults and Technology Use20142015-02-28Pew Research Centerhttp://www.pewinternet.org/files/2014/04/PIP_Seniors-and-Tech-Use_040314.pdf6WfX2s5T6
3. Fact Sheet for Health Professionals on Physical Activity Guidelines for Older Adults20082010-12-21US Department of Health and Human Serviceshttp://www.cdc.gov/nccdphp/dnpa/physical/pdf/PA_Fact_Sheet_OlderAdults.pdf5v8F3OlEz
4. Fatigue and Physical Activity in Older Adults With Cancer
5. Increasing Physical Activity With Mobile Devices: A Meta-Analysis