The effect of resistance training with HMB supplementation on lipid profile and some physical fitness indicators of beginner bodybuilders

Background: Beta-hydroxy beta-methyl butyrate (HMB) is one of the dietary supplements that has been used in recent years to modulate homeostasis and increase lipolysis and lean mass in athletes. The aim of this study was to investigate the effect of resistance training with HMB supplementation on lipid profile and some indicators of physical fitness of beginner bodybuilders. Materials and methods: In the present study, 40 male bodybuilders aged 19-29 years with a mean age of 22.95±3.03 years voluntarily participated and were randomly divided into two groups: HMB and placebo. The HMB group and the placebo group took the HMB supplement and the polydextrose capsule for 14 days, respectively. The training program for both groups included resistance exercises with a dual pyramid pattern for 8 weeks and 3 sessions per week. Blood samples were measured in the preand post-test phase two days before and after the intervention. Results: The results of analysis of covariance showed that there was a significant difference between the two groups of HMB and placebo in the triglyceride variable due to the intervention (p <0.05). But for the other variables, including LDL, HDL, LDL / HDL, and cholesterol, this difference was not significant (p>0.05). There was also a significant difference between HMB and placebo groups in the variables of chest and leg press due to intervention (p<0.05). Conclusion: The results of the present study showed that eight weeks of resistance training with a double pyramid pattern with HMB supplementation increased strength and decreased triglycerides in beginner bodybuilders.