Combined effect of carbohydrate-restricted diet and high-intensity interval training on body composition in normal weight,, overweight and obese adults: a systematic review and meta-analysis

Document Type : Review article

Authors

1 Department of Physical Education and Sport Sciences, Faculty of Humanities, University of Kashan, Kashan, Iran

2 Department of Exercise Physiology, Faculty of Physical Education and Sport Sciences, University of Isfahan, Isfahan, Iran

Abstract

Introduction: The prevalence of obesity and overweight in adults is increasing, so high-intensity interval training (HIIT) and carbohydrate-restricted diet (CRD) may be an effective intervention to improve body composition and maximal oxygen consumption. Therefore, the aim of this study is to investigate the combined effect of high-intensity interval training and carbohydrate-restricted diet on body composition and aerobic fitness in normal weight, overweight, and obese adults.
Materials and Methods: A comprehensive search was conducted in the information databases of PubMed, Web of Science, SID, Magiran, and Google Scholar for articles published up to January 2023. A meta-analysis was conducted to investigate the combined effect of HIIT and CRD on body composition in adults. Standardized mean difference (SMD) or weighted mean difference (WMD) and 95% confidence interval were calculated using random effect model.
Results: The results of 13 studies with 173 subjects showed that HIIT and low-carbohydrate diet caused a significant decrease in body weight [-4.23, P=0.001], BMI [-1.14, P=0.001], body fat percentage [-3.18, P=0.001], fat mass [-2.94, P=0.001] becomes obese in normal weight, overweight, and obese adults. But these two interventions do not change the muscle mass [-0.1, P=0.8].
Conclusion: Using a low-carbohydrate diet along with HIIT can lead to weight loss and body composition improvement in normal weight, overweight and obese adults. Also, these two interventions simultaneously can exert optimal effects on aerobic performance.

Keywords

Main Subjects

References

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Medical Journal of Mashhad university of Medical Sciences
Volume 67, Issue 3
May and June 2024
Pages 925-942

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