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J Cyst Fibros. 2019 Jan 18. pii: S1569-1993(18)30812-9. doi: 10.1016/j.jcf.2019.01.002. [Epub ahead of print]

Visceral adipose tissue is associated with poor diet quality and higher fasting glucose in adults with cystic fibrosis.

Author information

1
Division of Endocrinology, Metabolism and Lipids, Department of Medicine, Emory University School of Medicine; Atlanta, GA, USA; Nutrition and Health Sciences Doctoral Program, Emory University Rollins School of Public Health, Atlanta, GA, USA.
2
Division of Endocrinology, Metabolism and Lipids, Department of Medicine, Emory University School of Medicine; Atlanta, GA, USA.
3
Division of Endocrinology, Metabolism and Lipids, Department of Medicine, Emory University School of Medicine; Atlanta, GA, USA; Nutrition and Health Sciences Doctoral Program, Emory University Rollins School of Public Health, Atlanta, GA, USA; Center for Cystic Fibrosis and Airways Disease Research; Atlanta, GA, USA; Atlanta VA Medical Center, Decatur, GA, USA.
4
Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA; Center for Cystic Fibrosis and Airways Disease Research; Atlanta, GA, USA.
5
Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA; Division of Pulmonary, Allergy/Immunology, Cystic Fibrosis and Sleep, Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA; Center for Cystic Fibrosis and Airways Disease Research; Atlanta, GA, USA.
6
Division of Endocrinology, Metabolism and Lipids, Department of Medicine, Emory University School of Medicine; Atlanta, GA, USA; Nutrition and Health Sciences Doctoral Program, Emory University Rollins School of Public Health, Atlanta, GA, USA; Center for Cystic Fibrosis and Airways Disease Research; Atlanta, GA, USA. Electronic address: jessica.alvarez@emory.edu.

Abstract

BACKGROUND:

Body fat distribution and diet quality influence clinical outcomes in general populations but are understudied in individuals with cystic fibrosis (CF). The aim of this pilot study was to assess body fat distribution and diet quality in relation to fasting glucose and lung function in adults with CF.

METHODS:

Subjects were 24 adults (ages 18-50) with CF and 25 age-matched controls. The Healthy Eating Index 2015 (HEI-2015) was calculated from 3-day food records and data were adjusted per 1000 kcal. Whole and regional body composition, including visceral adipose tissue (VAT), was assessed by dual energy X-ray absorptiometry.

RESULTS:

Subjects with CF reported more added sugar intake [26.1 (IQR 18.1) vs. 12.9 (12.5) g/1000 kcal, p < 0.001] and had lower HEI-2015 scores [48.3 (IQR 9.9) vs. 63.9 (27.3), p < 0.001] compared to controls. There were no differences in BMI, total body fat, or lean body mass (LBM) between subjects with CF and controls (p > 0.05 for all), although subjects with CF had higher VAT than control subjects [0.3 (IQR 0.3) vs 0.1 (0.3) kg, p = 0.02]. Among subjects with CF, VAT was positively associated with added sugar intake (p < 0.001) and fasting blood glucose (p = 0.04). Lung function was positively associated with BMI (p = 0.005) and LBM (p = 0.03) but not with adiposity indicators.

CONCLUSIONS:

These novel data link body fat distribution with diet quality and fasting glucose levels in adults with CF, whereas LBM was associated with lung function. This study highlights the importance of increasing diet quality and assessing body composition and fat distribution in the CF population.

KEYWORDS:

Body composition; Cystic fibrosis; Diet quality; Fat distribution; Healthy eating index; Nutrition

PMID:
30665857
DOI:
10.1016/j.jcf.2019.01.002

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