Researchers studied data on 32,000 men in the Health Professionals Follow-up Study and found that over an 18-year period, 2,278 had developed type 2 diabetes.
But participants who spent 150 minutes per week doing both aerobic and resistance exercises were 59% less likely to develop type 2 diabetes than those who were sedentary. Though longer is better, only 10 minutes per day of weight training lowered the risk of developing diabetes.
Both aerobic and resistance exercise were associated with a lower risk for diabetes, but men who did both had the lowest risk of all.
Previous studies had focused on only aerobic activity to reduce risk of the disease, though weight training had been shown to help control persons who already had diabetes.
NB: Though the study focused only on men, researchers are confident that the findings will apply to women as well.
Tufts Health&Nutrition Update, August 17, 2012 Study published in Archives of Internal Medicine, August 7, 2012.