EFFECTS OF HIGH INTENSITY INTERVAL TRAINING AND AEROBIC EXERCISE ON LIPID METABOLISM AND CHRONIC INFLAMMATION OFOBESE ADULTS

Junmin Wang¹, Tengyun Gong², Zongbai Li^{3, *}

¹Institute of Physical Education, Huaiyin Normal University, Huaian, Jiangsu Province, China 223300 - ²Scientific research department, Huaiyin Normal University, Huaian, Jiangsu Province, China 223300 ^{- 3}College of History and Culture, Hunan normal University, Changsha , 410081, Hunan, China

Objective: The aim is to investigate the effects of high-intensity interval training and moderate-intensity aerobic exercise on the body shape, blood lipids and chronic inflammation of obese adults. 

Methods: 40 obese adults were randomly divided into two groups: the high intensity interval training group (n=20) and aerobic training group (n=20). The aforesaid two groups had been respectively involved in exercise intervention for 12 weeks. Before and after the exercise intervention, all the subjects' morphological indexes were tested; blood samples were collected from ipsilateral elbow vein in the early morning to detect the indexes of blood lipid metabolism and inflammatory factors such as TNF-α, C-reactive protein (CRP), Visfatin and so on of the subjects. 

Results: Compared with the data before intervention, after intervention the body weight of subjects in high intensity interval training group and aerobic training group decreased by 5.55% and 5.44% respectively; waistline decreased by 4.75% and 4.70% respectively (P<0.05); body fat rate decreased by 4.87% (P<0.01) and 4.00% (P<0.05); BMI significantly decreased by 2.43% and 2.28% respectively (P<0.05). After intervention, TG (P<0.05), TC (P<0.01) and LDL-C (P<0.05) decreased significantly, while HDL-C (P<0.05) increased significantly both in high intensity interval training group and aerobic training group. After intervention, TNF-α, CRP decreased significantly (P<0.01) and Visfatindecreased significantly (P<0.05) in high intensity interval training group; TNF-α decreased significantly (P<0.01) and, Visfatin, CRP decreased significantly (P<0.05) in aerobic training group. There was no significant difference between the two groups. 

Conclusion: high intensity interval training can, by reducing body fat weight, improve body composition and lipid metabolism of obese adults, and thus significantly reduce blood inflammatory factors such as TNF-α, CRP and Visfatin, which has similar effects of medium-intensity continuous aerobic training. High-intensity interval training has a positive effect on improving obese adults’ health level.