A new study indicates that combining aerobics (有氧运动) and weight lifting can help people with Type 2
diabetes (糖尿病) keep their blood sugar levels under control.
Most people probably think of diabetes control in terms of diet or insulin (胰岛素), but Dr. Tim Church
says exercise can play a big role.
"If you look at what diabetes is, it"s the failure of the body to manage the blood sugar, and the biggest
consumer of blood sugar in the human body is skeletal (骨骼) muscle," he says." So if you keep skeletal
muscle happy, it"s chewing up blood sugar 24 hours a day."
Church says most previous studies looked at the impact on diabetes of one kind of exercise only-typically
aerobic exercise, like walking or bicycling. So he and his colleagues recruited (招募) more than 250 patients
with diabetes and randomly assigned them to an aerobic exercise group, a weightlifting group, a group that did
both kinds of exercise, or a control group that had no organized exercise program.
After nine months, he said, the results were clear.
"And for everything we looked at, but in particu1ar related to hemoglobin (血红蛋白) A1C-that represents
blood sugar control-the group that did both the walking and the resistance training, or weight lifting, did by far
the best."
Church said he expected that the group that did both kinds of exercise would do better, but he was
surprised by how much better they did-not just on controlling blood sugar, but on other relevant measures as
well, like weight. He said different kinds of exercise affect the body differently, especially the big muscles that
are fueled by blood sugar.
"Skeletal muscle is so important for your health, and that"s particularly true in individuals with diabetes," he
explained."And aerobic exercise affects skeletal muscle through one set of mechanisms(机制), and the
weight-lifting affects skeletal muscles through a completely different set of mechanisms. So when you
combine aerobic plus the weight-lifting, you"re doubling the opportunity for benefit."
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