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Keeping Track of Physical Activity

Researchers studied whether pedometers are a useful way to measure thelevel of physical activity in 29 overweight men with type 2 diabetes, with anaverage age of 57 years.

Participants underwent exercise testing and were given pedometers. Fifteenof the men were put in an exercise group, in which they engaged in supervisedexercise twice a week for 12 weeks. Fourteen men kept to their usual routines.At the end of the study period, they had exercise testing again and had blooddrawn for lab tests, and their pedometers were read.

After the study, researchers found that pedometer readings matched upfairly well with levels of physical activity. Men who were in the exercisegroup lost an average of 2.7% of their weight, increased their fitness by>10%, and reduced their blood pressure and levels of glycated hemoglobin(A1C), a measure of longterm glucose control.

Bjørgaas M, Vik JT, Sæterhaug A, et al.:Relationship between pedometer-registered activity, aerobic capacity andself-reported activity and fitness in patients with type 2 diabetes.Diabetes Obes Metab 7:737–744, 2005.[Medline]

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