The effect of intermittent caloric restriction with and without high intensity interval training on blood lipids and body composition in middle-aged women with obesity
Subject Areas : Physical Activity and HealthSeyyedeh Farideh Iraqi 1 , azizeh ahmadi 2 * , vahid sari-saraf 3 , ramin amirsasan 4
1 - PhD in exercise physiology, Faculty of Physical Education and Sports Sciences, Tabriz University, Tabriz, Iran
2 - PhD in Sports Physiology, Faculty of Physical Education and Sports Sciences, Tabriz University, Tabriz, Iran
3 - Department of Sports Physiology, Faculty of Physical Education and Sports Sciences, Tabriz University, Tabriz, Iran
4 - Department of exercise physiology , Faculty of Physical Education and Sport Sciences, Tabriz University, Tabriz, Iran
Keywords: Calorie Restriction, High Intensity Interval Training, Blood Lipids, Obese Middle-Aged Women,
Abstract :
The purpose of this research is to investigate the effect of caloric restriction with and without high intensity interval training on blood lipids and body composition of obese middle-aged women. For this purpose, 20 middle-aged obese women with an average age of 41.375±1.26 years and a weight of 77.425±7.825 kg were randomly divided into two groups: intermittent caloriec restriction (CR)(n=10) and restriction Calories with intense interval training (HIIT+CR)(n=10). Intense interval training (8 weeks and 3 sessions per week) consisted of running with an intensity of 75-85% heart rate reserve in the first weeks and 90-95% in the last weeks. Calorie intake in both groups decreased by 20%. The measurements were taken 72 hours before and after the last training session. Independent t-test and correlated t-test were used to analyze the data. Weight, fat percentage, body mass index, waist to hip circumference decreased in both groups (p<0.05). Intergroup differences was in the weight index (p=0.010). Aerobic capacity showed a significant increase in the combined group (p<0.05). Triglyceride, total cholesterol, and low-density lipoprotein showed a significant decrease in the combined group (p<0.05). Only low-density lipoprotein showed a decrease in the calorie restriction group (p<0.05). A significant difference was observed between the two groups in triglyceride index (p=0.050) and low-density lipoprotein (p=0.042). The use of high intensity interval training along with caloric restriction caused a further decrease in lipid indices and body composition, as well as an increase in aerobic capacity compared to caloric restriction alone. Therefore, it seems that the combined method is more suitable for achieving physical health in obese middle-aged women