Rechnitzer Lecture
Seventh Annual Peter A. Rechnitzer Lecture
SENSORY ASPECTS OF EXERCISE
IN AGING
Norman L. Jones, M.D.,F.R.C.P.(London),
F.R.C.P.(C)
McMaster University Medical School
Hamilton, Ontario
Monday, June 11, 2001
4 p.m.
Room 270, Medical Sciences Building
Sponsors:
Canadian Centre for Activity and Aging
The Peter A. Rechnitzer Fund
School of Kinesiology
Department of Physiology
Faculty of Medicine and Dentistry
Faculty of Graduate Studies
Lawson Health Research Institute
Norman L. Jones, M.D., F.R.C.P.(London),
F.R.C.P.(C)
McMaster University Medical School
Dr. Jones is Professor Emeritus in the Department
of Medicine at McMaster University. His interest in
exercise began early, and he received his medical training
at St. Mary=s Hospital in London, England. He served
in the Royal Army Medical Corps as a Medical Specialist,
and after entered an academic career in Respiratory
Medicine at the Royal Postgraduate Medical School at
the Hammersmith Hospital. Initially his research was
in cardiac and respiratory responses to exercise in
health and cardiorespiratory disorders, to which was
added muscle metabolism, following a year as a Fullbright
Research Fellow at the Cardiovascular Research Institute
at the University of California in San Francisco. In
1968 he was appointed Head of the Respiratory Division
at McMaster, a position he held until retiring in 1991;
since then he has maintained his interests in clinical
chest medicine and physiology, and he is the founding
Editor in Chief of the Canadian Respiratory Journal.
Dr. Jones has published widely on many aspects of exercise
in health and disease. The four editions of his book
AClinical Exercise Testing@ chronicle his progress over
25 years in learning about the factors that contribute
to exercise capacity and to disability.
SENSORY ASPECTS OF EXERCISE IN AGING
ABSTRACT: The maximal oxygen intake has gained a pre
eminent status in exercise physiology, being used both
as a measurement of the body=s maximal aerobic capacity
and conceptually as a limiting attribute of an individual.
But does it really deserve its almost mythic status?
If we demote it to the status of a variable measured
during maximal effort, this frees us to seek other factors
that may actually limit our ability to perform exercise
and also to question whether oxygen delivery mechanisms
actually limit exercise because they have reached their
Alimiting@ capacity. Can we agree that what stops most
of us exercising is the intensity of the associated
sensations of effort, fatigue, breathlessness and other,
less common, symptoms? Measurement of the intensity
of these sensations, previously ignored because they
are Asubjective@, have helped us understand the many
factors that may contribute to exercise limitations
in health and disease. This theme will be explored in
the context of the progressive reduction in exercise
capacity with aging, in the hope that it may provide
an alternative approach to understanding the contributors
to this disability, and allow us to help seniors find
ways in which to maintain
physical activities in daily living. Top
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Email: dpaterso@uwo.ca
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