[1] Queens Univ, Sch Kinesiol & Hlth Studies, Kingston, ON K7L 3N6, Canada
[2] Childrens Hosp Eastern Ontario, Hlth Act Living & Obes Res Grp, Res Inst, Ottawa, ON K1H 8L1, Canada
[3] Univ Waterloo, Dept Kinesiol, Waterloo, ON N2L 3G1, Canada
[4] Univ Waterloo, Schlegel Univ Waterloo Res Inst Aging, Waterloo, ON N2J 0E2, Canada
[5] Univ Prince Edward Isl, Dept Appl Human Sci, Charlottetown, PE C1A 4P3, Canada
[6] McMaster Univ, Sch Rehabil Sci, Hamilton, ON L8S 1C7, Canada
[7] Univ Hlth Network, Toronto Rehabil Inst, KITE, Toronto, ON M4G 3V9, Canada
[8] Canadian Soc Exercise Physiol, Ottawa, ON K2A 4B1, Canada
[9] Univ Montreal, Dept Psychol, Montreal, PQ H2V 2S9, Canada
[10] Univ Alberta, Fac Kinesiol Sport & Recreat, Edmonton, AB T6G 2H9, Canada
[11] Glasgow Caledonian Univ, Sch Hlth & Life Sci, Glasgow G4 0BA, Lanark, Scotland
[12] Univ Ghent, Dept Movement & Sport Sci, Ghent, Belgium
[13] ParticipACTION, Toronto, ON M5S 1M2, Canada
[14] Univ British Columbia, Sch Kinesiol, Vancouver, BC V6T 1Z1, Canada
[15] Loyalist Family Hlth Team, Amherstview, ON K7N 0B6, Canada
[16] Univ Queensland, Sch Publ Hlth, Herston, Qld 4006, Australia
[17] Pennington Biomed Res Ctr, Baton Rouge, LA 70808 USA
[18] Univ Victoria, Sch Exercise Sci Phys & Hlth Educ, Victoria, BC V8P 5C2, Canada
[19] Canadian Frailty Network, Kingston, ON K7L 3N6, Canada
[20] McMaster Univ, Dept Med, Div Geriatr Med, Hamilton, ON L8S 4L8, Canada
[21] Queens Univ, Queens Univ Lib, Kingston, ON K7L 3N6, Canada
[22] Canadian Publ Hlth Assoc, Ottawa, ON K1Z 8R9, Canada
[23] WHO, Dept Hlth Promot, CH-27 Geneva, Switzerland