Intensity is a subjective construct

Affiliations

• ¹ Department of Kinesiology, University of Waterloo, 200 University Ave W, Waterloo, ON, N2K 2N1, Canada. lmgiangr@uwaterloo.ca.
• ² Toronto Rehabilitation Institute, University Health Network, Toronto, ON, Canada. lmgiangr@uwaterloo.ca.
• ³ Schlegel-UW Research Institute for Aging, Wareloo, ON, Canada. lmgiangr@uwaterloo.ca.
• ⁴ Department of Medicine, McMaster University, Hamilton, ON, Canada.
• ⁵ Department of Health Sciences, University of Jyväskylä, Jyväskylä, Finland.
• ⁶ Department of Medicine, University of Toronto, Toronto, ON, Canada.
• ⁷ Division of Anatomy, University of Toronto, Toronto, ON, Canada.
• ⁸ Department of Family Practice, University of British Columbia, Vancouver, BC, Canada.
• ⁹ School of Rehabilitation Science, McMaster University, Hamilton, ON, Canada.
• ¹⁰ Department of Community and Family Medicine, Duke University, Durham, NC, USA.
• ¹¹ Department of Kinesiology, University of Waterloo, 200 University Ave W, Waterloo, ON, N2K 2N1, Canada.
• ¹² Ontario Osteoporosis Strategy & Osteoporosis Canada, Toronto, ON, Canada.
• ¹³ Schlegel-UW Research Institute for Aging, Wareloo, ON, Canada.
• ¹⁴ University of Melbourne Department of Medicine, and Bone and Mineral Medicine, Royal Melbourne Hospital, Victoria, Australia.