Exercise Training Adaptations in Metabolic Syndrome Individuals on Chronic Statin Treatment

Author:

Morales-Palomo Felix1,Ramirez-Jimenez Miguel1,Ortega Juan F1,Moreno-Cabañas Alfonso1,Mora-Rodriguez Ricardo1ORCID

Affiliation:

1. Exercise Physiology Lab at Toledo, University of Castilla-La Mancha, Toledo, Spain

Abstract

Abstract Background Statins reduce atherogenic dyslipidemia and cardiovascular disease (CVD) risk in metabolic syndrome (MetS) individuals. Exercise training could also contribute to reduce CVD by improving cardiorespiratory fitness and fat oxidation. However, statin use could interfere with training adaptations. Methods A total of 106 MetS individuals were divided into statin users (statin group, n = 46) and statin-naïve (control group, n = 60). Groups were matched by age, weight, and MetS components. Subjects completed 16 weeks of high intensity interval training (HIIT). Before and after HIIT, muscle biopsies were collected to assess mitochondrial content (citrate synthase [CS] activity) and the activity of the rate limiting β-oxidation enzyme (3-hydroxyacyl-CoA-dehydrogenase [HAD]). Fasting plasma glucose, insulin, TG, HDL-c, and LDL-c concentrations were measured. Exercise maximal fat oxidation (FOMAX) and oxygen uptake (VO2PEAK) were determined. Results Training improved MetS similarly in both groups (MetS z-score -0.26 ± 0.38 vs. -0.22 ± 0.31; P < 0.001 for time and P = 0.60 for time x group). Before training, the statin group had reduced muscle HAD activity and whole body FOMAX compared to the control group. However, 16 weeks of HIIT increased HAD and FOMAX in both groups (P < 0.03, time-effect). The statin group did not prevent the increases in CS with HIIT observed in the control group (38% vs 64%, respectively; P < 0.001, time-effect). Conversely, with training VO2PEAK improved less in the statin than in the control group (12% vs. 19%, respectively; P = 0.013, time × group effect). Conclusion Chronic statin use in MetS does not interfere with exercise training improvements in MetS components, FOMAX, or mitochondrial muscle enzymes (ie, CS and HAD). However, the statin group attenuated the improvements in VO2PEAK with training. Clinical Trial Information ClinicalTrials.gov identifier no. NCT03019796, January 13, 2017.

Funder

Spanish Ministry of Economy, Industry and Competivity

Publisher

The Endocrine Society

Subject

Biochemistry (medical),Clinical Biochemistry,Endocrinology,Biochemistry,Endocrinology, Diabetes and Metabolism

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