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Diet & Lifestyle
Exercise
Research
Night heart rate reduced
from exercising
Exercise improves cardiac output and heart rate
variability in normal adults, not just following exercise, but also at
night.
Two groups, each consisting of 7 men and 9 women
of average age 66 were studied by the Division of Cardiology, Washington
University School of Medicine, St Louis, USA.
One of the groups carried out 12 months of
supervised exercise, consisting of
3 months of stretching and 9 months of 5 hours/week aerobic exercise at
approximately 70% of maximal oxygen uptake, whilst the other group carried
out no specific exercise training .
The study revealed that of those in the exercise
group compared with those not practising the training, oxygen consumption
increased from 126 beats/min to 142 beats/min. The most observed change
occurred in the average night time heart rate which decreased from 67
beats/min to 63 beats/min.
Whilst those who practised the exercises
benefited from an increased level of health, the study concluded that
exercise training was most noted for increasing total heart rate
variability in normal older adults, with the most marked alterations in
the heart rate at night.
Reference: Effect of
exercise training on heart rate variability in healthy older adults.
Stein PK; Ehsani AA; Domitrovich PP; Kleiger RE;
Rottman JN Am Heart J, 138:567-76, 1999 Sep
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The Internet Health Library 2000
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This page was last updated on 28 March 2001 11:22:04
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