Document Type : Research Paper I Open Access I Released under (CC BY-NC) license
Author
Department of Sport sciences, Bojnourd Branch, Islamic Azad University, Bojnourd, Iran.
Abstract
The purpose of this research was to investigate the effect of 8 and 12 weeks of high intensity interval training (HIIT) on the serum level of C-reactive protein (CRP), interleukin-6 (IL-6), homocysteine (HCY) and lipid profile of active middle-aged men.
For this purpose, 30 active middle-aged men, were randomly divided into two groups: HIIT training and control group. HIIT Training subjects do HIT training 3 session per week for 12 weeks with 90% of maximum heart rate. The Serum levels of CRP, IL-6, HCY, HDL, LDL, TC and TG were measured 12 hours before the first session of training protocol, and 48 hours after 8th and 12th weeks of HIIT.
Results show that HIIT had a significant effect on LDL, TC and TG Indices in active middle-aged men in both 8 and 12 weeks (P˂0/05). On the other hand, HIIT did not have a significant effect on CRP (P=0/848), IL-6 (P=0/080) and HCY (P=0/247) indices in 8 weeks, but it did have a significant effect on CRP (P=0/003), IL-6 (P=0/019) and HCY (P=0/012) indices in 12 weeks.
HIIT appears to produce favorable changes on lipid profile of middle-aged men over a period of 8 weeks, But it does not have the ability to improve their inflammatory indicators and create favorable changes in inflammatory indices, it is necessary to perform HIIT for more than 8 weeks and a period of 12 weeks will bring about favorable changes and It is likely to have an effective role in preventing middle-aged heart diseases.
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