Audio transcript
The
two principal forms of physical activity or exercise important in promoting
health and well-being include endurance/aerobic exercise and strength
training. Endurance activity improves heart and lung fitness whilst
strength training enhances muscle size and strength.
The
level of physical activity required to achieve optimal health benefits
for older adults has not been established. Research suggests that endurance
activities should be performed daily (e.g. walk of 30 minutes duration
or 3 bouts of 8 to 10 minutes) along with some strength training. Endurance
activities do not have to be continuous but can be accrued during the
day through short bursts of activity. Strength/resistance training in
older adults (even the very old and frail) seems particularly promising
in reducing or preventing the decline in muscle mass observed with ageing.
It is more effective in preventing lean muscle atrophy than aerobic
activity, especially during weight loss. It can improve walking ability
and balance and its associated risk for falls.
Strength
training also contributes to improved tendon and ligament strength,
bone health and improvements in blood sugar levels. It should also make
activities of daily living easier for older people. Such activities
might include climbing stairs, getting out of a chair, pushing a vacuum
cleaner, carrying groceries and crossing a road with sufficient speed.
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