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Climbing stairs serially burns more calories
Monday December 17, 2012 09:07:29 AM,
IANS
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London: Climbing one step at a time burns more
calories than leaping up several stairs, according to scientists
from the University of Roehampton.
They found climbing five flights of stairs five times a week -- an
ascent of around 15 metres -- burnt an average of 302 calories if
the stairs were taken one at a time.
But taking two steps with every stride will only burn 260
calories, they say.
Lewis Halsey, senior lecturer in comparative and environmental
physiology at the university, said: "We were really interested to
find out what expended more energy overall -- attacking the stairs
two at a time and climbing them quickly, or taking them more
sedately one step at a time and reaching the top more slowly," the
Daily Mail reports.
"Our study reported the calories burned ascending stairs, the
potential weight loss value of climbing stairs if done regularly
and frequently during the week, and also the different energy
costs of ascending stairs one step at a time versus two steps at a
time.
"And our conclusion: it is better to take the stairs one at a
time, if you want to burn the most calories."
He added that the greater total energy expenditure of one-step
ascents must be partly explained by the fact it takes longer.
But there might be a bio-mechanical explanation too.
Taking the stairs one at a time may result in faster rates of
muscle shortening, which increases energy turnover.
Previous research from the University of Ulster found office
workers who began regularly climbing stairs quickly improved their
fitness.
Researchers divided office workers into two groups. One climbed
staircases located within an eight-storey office block, consisting
of 145 steps. They began by climbing the stairs once a day and
gradually built up to three over the following five weeks.
The average speed they climbed was 75 steps a minute.
At the end of the trial, the stairclimbing group showed a
significant 10 percent increase in a reading called predicted VO2
max.
This is measured using your pulse -- the time interval between
your heartbeats is used to find out how well your body takes up
and uses oxygen.
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