The present study aimed to determine the effects of negative-calorie diet supplemented with exercise, on weight loss and lipid profile, and to compare its efficiency with low-calorie diet with exercise among elderly adult men with abnormal weight gain.

Background and Aim: Negative-calorie diet is among the popular dieting guides for weight loss; however, there is still little knowledge about this method. The present study aimed to determine the effects of negative-calorie diet supplemented with exercise, on weight loss and lipid profile, and to compare its efficiency with low-calorie diet with exercise among elderly adult men with abnormal weight gain.

Materials and Methods: Participants included sedentary men (age 45-75 years) with overweight or obesity (n=37). They were randomly divided into 2 groups including negative calorie diet with exercise, and low-calorie diet with exercise. Of all 37 participants, 30 persons completed the treatment. The weight assessment parameters including change in weight and body composition, blood sample tests were performed pre- and three month post-intervention.

Inclusion Criteria:

Non-smokers and weight-stable (± 2 kg, for more than one year) with no history of regular exercise in at least three months before the study.

Exclusion Criteria:

History of CVD and other disorders such as diabetes, depression, eating disorders, chronic medications, kidney disease, cancer, food allergies or intolerances to items used in meals. Subjects with abnormality in thyroid or Electrocardiograph, any history of anti-obesity medication or weight loss drugs or dietary supplementations for weight control.

Participants were non-smokers and weight-stable (± 2 kg, for more than one year) with no history of regular exercise in at least three months before the study.