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Irán
Introduction:Recently, the use of various high-intensity intermittent training (HIIT) that havequick recovery periods are of great importance. Therefore, the purpose of this research was toinvestigate the acute effect of HIIT training on the serum levels of inflammatory and muscledamage indices in overweight middle-aged men, as well as the kinetics of these markers at 1,24, and 48 h after HIIT training.Methods:Twenty-two middle-aged men (4060 years, BMI 2530 kg/m2) were divided into twotraining (n=12) and control (n=10) groups. The HIIT training program consisted of running ontreadmill for 30 s with an intensity of 100% maximum aerobic speed (MAV), 30 s active recoverywith 50% aerobic speed (4 sets, 4 repetitions and 5 min of rest between each round). Cortisol,IL-6, CRP, ALT, AST, CPK and LDH were evaluated in pre-test, one- hour, 24 and 48 h after HIITtraining.Results:Except for the CRP variable, Cortisol, IL-6, CPK, LDH, ALT and AST had a significantincrease in one- hour after HIIT compared to the pre-test (P<0.05). Also, IL-6 and CPK variableshad a significant increase in 24 h and only CPK had a significant increase in 48 h after HIIT trainingcompared to pre-test (P<0.05).Conclusion:Overall, due to long rest intervals and low activity time during HIIT, inflammatoryresponses and muscle damage are not severe. The recovery periods of inflammatory and muscledamage markers are faster, so this type of response can be considered an advantage for over-weight middle-aged men.
