Is long-term physical activity safe for older adults with knee pain Is long-term physical activity safe for older adults with knee pain?: a systematic review  J.G. Quicke, N.E. Foster, M.J. Thomas, M.A. Holden  Osteoarthritis and Cartilage  Volume 23, Issue 9, Pages 1445-1456 (September 2015) DOI: 10.1016/j.joca.2015.05.002 Copyright © 2015 The Authors Terms and Conditions

Fig. 1 Flow chart for study selection. Osteoarthritis and Cartilage 2015 23, 1445-1456DOI: (10.1016/j.joca.2015.05.002) Copyright © 2015 The Authors Terms and Conditions

Fig. 2 Bar chart of RCTs providing safety outcome domain evidence. Osteoarthritis and Cartilage 2015 23, 1445-1456DOI: (10.1016/j.joca.2015.05.002) Copyright © 2015 The Authors Terms and Conditions

Fig. 3 Summary of risk of bias within the 47 included RCTs. Osteoarthritis and Cartilage 2015 23, 1445-1456DOI: (10.1016/j.joca.2015.05.002) Copyright © 2015 The Authors Terms and Conditions

Osteoarthritis and Cartilage 2015 23, 1445-1456DOI: (10. 1016/j. joca Copyright © 2015 The Authors Terms and Conditions