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Journal of Cardiovascular and Thoracic Research
ISSN: 2008-5117      eISSN: 2008-6830  
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Article History
Submitted: 22 Nov 2016
Revised: 05 Feb 2017
Accepted: 08 Feb 2017
First published online: 06 Mar 2017

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J Cardiovasc Thorac Res. 2017;9(1):21-28 doi: 10.15171/jcvtr.2017.03

Effects of a therapeutic lifestyle change diet and supplementation with Q10 plus L-carnitine on quality of life in patients with myocardial infarction: A randomized clinical trial

Original Article

Mohammad Hossein Sharifi 1, Mohammad Hassan Eftekhari 1 * , Mohammad Ali Ostovan 2, Rezaeianzadeh Abbas 3

1 School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
2 Department of Cardiology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
3 Colorectal Research Center, Shiraz University of Medical Sciences, Shiraz, Iran



Abstract
Introduction: Myocardial infarction (MI) has a deleterious effect on quality of life (QoL), which can affect cardiac prognosis after MI. Thus, new strategies have to be identified for improving the QoL. To our knowledge, no studies have been conducted on the impact of therapeutic lifestyle change (TLC) diet and L-carnitine plus Q10 supplementation on QoL after MI.
Methods:
The study aimed to measure 128 MI patients’ QoL using MacNew QoL questionnaire (global scales and physical, emotional, and social subscales) before and 3 months after the intervention. The patients were divided into 4 groups. Group A received TLC diet, group B orally received Q10 150 mg/d and L-carnitine 1200 mg/d, and group C received a combination of carnitine plus Q10 and TLC diet. Finally, group D, as the control group, only underwent the routine care.
Results:
The results showed a significant increase in MacNew questionnaire’s physical, emotional, and social subscales in the four groups after the intervention. The results of within-group analysis showed that the physical and emotional subscales changed significantly (P < 0.001 and P < 0.022, respectively). In the emotional subscale, TLC group showed a significant improvement compared to groups B and D (P < 0.019 and P < 0.001, respectively), but not group C (P < 0.681). In the physical subscale, Q10 plus L-carnitine group showed a significant improvement compared to groups A and D (P < 0.001 and P < 0.0001, respectively), but not group C (P < 0.860). In the global scale, combination of carnitine plus Q10 and TLC diet group demonstrated a considerable improvement compared to groups A, B, and D (P < 0.001, P < 0.001, and P < 0.001, respectively). Nevertheless, the results of within-group analysis revealed no significant differences among the four groups regarding the social subscale (P < 0.229).
Conclusion: Both TLC diet and supplementation with Q10 and L- carnitine had a positive effect on the physical and emotional subscales of MacNew questionnaire and may improve post-MI prognosis. Based on the results, combination of Q10 plus L-carnitine and TLC die can be a potential intervention for improving QoL and secondary prevention.






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