The Impact of High-Intensity Interval Training Versus Moderate-Intensity Continuous Training on Blood Lipid Levels in Overweight Middle-Aged Women
Poster Presentation
Paper ID : 2206-SSRC
Authors
دانشگاه سجاد
Abstract
Introduction: Menopause is characterized by physiological changes with increased risk of obesity and dyslipidemia. Regular exercise training is recognized as a powerful tool to improve cardiovascular risk profile, but it is unknown which of high-intensity interval training or moderate-intensity continuous training is the best exercise.
Materials and Methods: A total of 33 inactive and overweight women aged 40–50 years old and body mass index >27 kg/m2 were randomized to high-intensity interval training, moderate-intensity continuous training, or control. The exercise intervention consisted of 12 weeks of training and three supervised sessions per week. The moderate-intensity group was trained continuously for 47 min at 60–70% of maximal heart rate. High-intensity interval training consisted of four interval bouts of 4 min at 85%–95% of maximal heart rate with 3 min breaks at 50%–60% of maximal heart rate between the intervals. Participants arrived at the laboratory at 7.30 am after overnight fasting. Blood samples collected after 12 h of fasting and 24 h of no intense physical activity. Serum triglyceride, low-density lipoprotein (LDL), and total cholesterol concentrations were measured by the clinical assay using Biosystem kits. The lab technician was blinded about study groups. For all analyses, statistical significance was assigned at P < 0.05.
Results: The results showed that cholesterol, LDL, and triglyceride levels decreased significantly in the moderate-intensity continuous training group (P = 0.001). In addition, while cholesterol and triglyceride levels significantly decreased in the high-intensity interval training group (P = 0.018 and P = 0.037, respectively), no significant changes were observed in the levels of cholesterol, LDL, and triglyceride in the control group.
Conclusion: Twelve weeks of exercise training, especially in high-intensity interval training, have led to improving lipid profiles, it can be said that regular and prolonged exercise can probably be a preventive factor in cardiovascular disease in overweight women.
Materials and Methods: A total of 33 inactive and overweight women aged 40–50 years old and body mass index >27 kg/m2 were randomized to high-intensity interval training, moderate-intensity continuous training, or control. The exercise intervention consisted of 12 weeks of training and three supervised sessions per week. The moderate-intensity group was trained continuously for 47 min at 60–70% of maximal heart rate. High-intensity interval training consisted of four interval bouts of 4 min at 85%–95% of maximal heart rate with 3 min breaks at 50%–60% of maximal heart rate between the intervals. Participants arrived at the laboratory at 7.30 am after overnight fasting. Blood samples collected after 12 h of fasting and 24 h of no intense physical activity. Serum triglyceride, low-density lipoprotein (LDL), and total cholesterol concentrations were measured by the clinical assay using Biosystem kits. The lab technician was blinded about study groups. For all analyses, statistical significance was assigned at P < 0.05.
Results: The results showed that cholesterol, LDL, and triglyceride levels decreased significantly in the moderate-intensity continuous training group (P = 0.001). In addition, while cholesterol and triglyceride levels significantly decreased in the high-intensity interval training group (P = 0.018 and P = 0.037, respectively), no significant changes were observed in the levels of cholesterol, LDL, and triglyceride in the control group.
Conclusion: Twelve weeks of exercise training, especially in high-intensity interval training, have led to improving lipid profiles, it can be said that regular and prolonged exercise can probably be a preventive factor in cardiovascular disease in overweight women.
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