Weight training, and not just cardio workouts, is linked to a
lower risk of developing diabetes, according to a US study.
"We all know that aerobic exercise is beneficial for diabetes
- many studies have looked at that - but no studies have
looked at weight training," said study leader Frank Hu, at
the Harvard School of Public Health.
"This study suggests that weight training is important for
diabetes, and probably as important as aerobic training."
Hu and his colleagues, whose report was published in the
Archives of Internal Medicine, used data on more than 32,000
male health professionals, who answered questionnaires every
two years from 1990 to 2008.
On average, four out of 1,000 men developed type 2 diabetes
every year, the researchers found.
The risk of getting the blood sugar disorder was only half as
high for men who did cardio, or aerobic, workouts - say brisk
walking, jogging or playing tennis - at least 150 minutes a
week, as for those who didn't do any cardio exercise.
Men who did weight training for 150 minutes or more had a
risk reduction of a third compared to those who never lifted
weights, independently of whether or not they did aerobic
Whereas weight training increases muscle mass and can reduce
abdominal obesity, it tends not to cut overall body mass,
The results don't prove that working out staves off diabetes,
because many men who stay fit may also be healthier in other
ways, but the researchers did their best to account for such
potential differences, including age, smoking and diet.
"I think the benefits of weight training are real," said Hu.
"Any type of exercise is beneficial for diabetes prevention,
but weight training can be incorporated with aerobic exercise
to get the best results."
Along with an appropriate diet, exercise is also important
for people who already have diabetes and can help control
high blood sugar, he added.