A community-based physical activity intervention to prevent mobility-related disability for retired older people (REtirement in ACTion (REACT)): study protocol for a randomised controlled trial.

Afroditi Stathi, Janet Withall, Colin J. Greaves, Janice L Thompson, Gordon Taylor, Antonieta Medina-Lara, Colin Green, James Bilzon, Selena Gray, Heidi Johansen-Berg, Claire E. Sexton, Max Western, Jolanthe De Koning, Jessica C. Bollen, Sarah Moorlock, Naiara Demnitz, Poppy Seager, Jack Guralnik, W. Jack Rejeski, Ken R. Fox