In the exhaustive study, over 80,000 adults
in England and Scotland over 30 years of age were studied between 1994 and
2008, along with a follow up period averaging nine years. At the end of the
follow up period, the risk of death of each participant was measured according
to the amount of strength-promoting exercise they performed. Results were
adjusted according to the age, sex, health status, and behaviour of
participants, including lifestyle factors such as smoking, alcohol, diet,
education level, mental health, and participation in cardio and other physical
activities.
According to Emmanuel Stamatakis, Associate
Professor of Physical Activity, Lifestyle, and Health Behaviours at the
University of Sydney, "Those who reported participation in any
strength-promoting exercise (including gym workouts) averaged about 60 minutes
a week and those who reported any own body weight exercises averaged 50 minutes
a week. Participation in either gym workouts or own body weight exercises
reduced the risk of early death by about 20%. Cancer-related deaths also
decreased by 24-27%, but there was little evidence more was better."
The study compared being inactive to both
aerobic and strength-related exercise, with different results found for
different types of activity. While cardio and strength training were both
associated with a decreased risk of death, the risk of dying from specific
diseases changed depending on the type of activity performed. According to
Stamatakis, "We also compared the risk of those who met the recommendation
of two sessions of strength-promoting exercise per week, with those who met the
recommendation of 150 minutes of aerobic physical activity such as walking (or
75 minutes more intense, such as running) per week. Compared to being inactive,
meeting either guideline was associated with a 16-18% reduction in risk of early
death."
Interestingly, bodyweight exercises and
other strength-promoting workouts were found to be much better at reducing the
risk of cancer than aerobic physical activities such as walking or running,
with cardio workouts better at reducing the risk of heart disease. "But
the results on cancer death risk told us a very different story. Those who met only
the strength-promoting guideline by doing body weight exercises had a 31% lower
risk of death from cancer. Those who met only the aerobic exercise guideline
had no reduction in risk of cancer death." said Stamatakis, adding
"On the other hand, reducing the risk of death from heart disease was only
associated with aerobic physical activity (21% reduction)."
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