Blood sugar control declines with age and is influenced by genetics, diet, and physical activity. Muscle accounts for approximately 42% of total body mass, so it is an important issue for regulating blood sugar. A study from Arizona State University focused on the effects of weight training intensity and volume on blood sugar control in adult men and women (average age about 30) with slightly elevated resting blood sugar levels (100-125 m/dL).
High intensity weight training controlled blood sugar better than low -intensity workouts. Resting blood sugar was lower without affecting blood insulin, which showed that weight training is an important and effective way to help control blood sugar.