The purpose of the study is to evaluate the impact of an exercise programme organized into supervised walking groups on metabolic control, functional capacity and overall quantity of physical activity in subjects with type 2 diabetes.
Regular, moderate-intensity physical activity can attenuate hyperglycemia in subjects with type 2 diabetes. In addition, these programmes may favourably affect several other cardiovascular risk factors in these subjects. However, it still remains unclear how this evidence can be transferred into clinical practice, considering the very large number of diabetic patients and the characteristics of this population, made up predominantly of elderly, sedentary and overweight patients. In this regard, a realistic approach to this issue requires simple and easily available intervention models. Walking is a typical mild-moderate aerobic physical activity which is easy to organize and does not require specific skills or preliminary sophisticated medical evaluations. This activity could therefore fit well with the need of involvement of large numbers of patients in different logistic situations. However, it has been reported that, due to the low walking speed typical of type 2 diabetic subjects, self-paced walking is inadequate to obtain a significant metabolic improvement in these subjects.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
59
Walk training, 3 sessions per week for 4 months, under the supervision of a qualified personal trainer.
Verbal and written information about the benefits of exercise and instructions aimed to encourage physical activity. In addition, one group session of counselling on these issues.
Change in haemoglobin A1c (HbA1c) levels
The measurement of HbA1c is carried out with a DCCT-aligned method.
Time frame: 4 months
Change in Body weight
Time frame: 4 months
Change in Fasting plasma glucose levels
Time frame: 4 months
Change in Total Cholesterol levels
Time frame: 4 months
Change in HDL Cholesterol levels
Time frame: 4 months
Change in LDL Cholesterol levels
Time frame: 4 months
Change in Triglycerides levels
Time frame: 4 months
Change in Blood Pressure
Time frame: 4 months
Change in 6 minutes walk distance
This test measures the number of meters that can be walked in 6 minutes over a 30 m course. It is a simple field test to assess aerobic functional capacity.
Time frame: 4 months
Change in C-reactive protein levels
Time frame: 4 months
Change in Energy expenditure through voluntary physical activity
Energy expenditure is estimated through 7-day activity diaries. The intensity of each activity (defined in metabolic equivalents, MET) is multiplied by duration and the product for each activity is summed to give a total activity score in MET hours/week.
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Time frame: 4 months
Change in Antidiabetic medications
Class and dosage of blood-glucose lowering drugs are recorded before and at the end of the protocol, to assess changes in hypoglycemic medication during the trial.
Time frame: 4 months
Compliance with walking sessions
Attendance at the scheduled walking sessions is recorded for each patient.
Time frame: 4 months