Age and Ageing, Vol 28, 531-536, Copyright © 1999 by British Geriatrics Society
FW Kasch, JL Boyer, PK Schmidt, RH Wells, JP Wallace, LS Verity, H Guy and D Schneider
BACKGROUND: increasing age affects aerobic capacity, with an average loss
of 10% or more per decade. AIM: to determine the effect of ageing on the
circulatory system in middle-aged men during 33 years of physical training.
METHODS: 15 men initially aged 45 years took part in an exercise training
programme for 25-33 years. Nine serial measurements were made at rest and
during maximal effort. Aerobic training consisted of swimming, jogging,
walking and cycling 3-4 times per week. Sessions were for 61-70 min at
77-84% of heart rate reserve. RESULTS: there was no change in resting heart
rate, blood pressure, percentage fat or body composition. Minimal
cardiovascular losses at maximal work included 5.8-6.8% in maximal oxygen
uptake per decade, 25 beats in maximum heart rate and 26 beats in heart
rate reserve. CONCLUSION: exercise training has a favourable effect on
ageing of the cardiovascular system in older men, resulting in minimal loss
of oxygen uptake, no rise in resting blood pressure and no change in body
composition.
ARTICLES
Ageing of the cardiovascular system during 33 years of aerobic exercise
San Diego State University, CA 92182, USA.
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