Regional Adipose Distribution and its Relationship to Exercise Intolerance in Older Obese Patients Who Have Heart Failure With Preserved Ejection Fraction

被引:134
作者
Haykowsky, Mark J. [1 ]
Nicklas, Barbara J. [2 ]
Brubaker, Peter H. [3 ]
Hundley, W. Gregory [4 ]
Brinkley, Tina E. [2 ]
Upadhya, Bharathi [4 ]
Becton, J. Thomas [4 ]
Nelson, Michael D. [1 ]
Chen, Haiying [5 ]
Kitzman, Dalane W. [2 ,4 ]
机构
[1] Univ Texas Arlington, Coll Nursing & Hlth Innovat, Arlington, TX 76019 USA
[2] Wake Forest Univ, Wake Forest Sch Med, Dept Internal Med, Sect Gerontol & Geriatr Med, Winston Salem, NC 27109 USA
[3] Wake Forest Univ, Wake Forest Sch Med, Dept Exercise & Hlth Sci, Winston Salem, NC 27109 USA
[4] Wake Forest Univ, Wake Forest Sch Med, Dept Internal Med, Cardiovasc Med, Winston Salem, NC 27109 USA
[5] Wake Forest Univ, Wake Forest Sch Med, Dept Biostat Sci, Winston Salem, NC 27109 USA
基金
美国国家卫生研究院;
关键词
adipose; aging; exercise; heart failure with preserved ejection fraction; obesity; physical function; LEFT-VENTRICULAR STRUCTURE; LOWER-EXTREMITY FUNCTION; FAT DISTRIBUTION; EPICARDIAL FAT; PHENOTYPE; CAPACITY; TISSUE; RISK; MITOCHONDRIAL; DETERMINANTS;
D O I
10.1016/j.jchf.2018.06.002
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
OBJECTIVES This study sought to test the hypothesis that older obese patients with heart failure with preserved ejection fraction (HFpEF) have significantly greater abdominal, cardiac, and intermuscular fat than healthy, age-matched controls, out of proportion to total body fat, and that these abnormalities are associated with objective measurements of physical function. BACKGROUND Recent studies indicate that excess total body adipose tissue contributes to exercise intolerance in patients with HFpEF. However, the impact of the pattern of regional (abdominal, cardiac, intermuscular) adipose deposition on exercise intolerance in patients with HFpEF is unknown. METHODS We measured total body adiposity (using dual-energy x-ray absorptiometry) and regional adiposity (using cardiac magnetic resonance), peak oxygen uptake (Vo(2)), 6-min walk distance (6MWD), short physical performance battery (SPPB), and leg press power in 100 older obese patients with HFpEF and 61 healthy controls (HCs) and adjusted for age, sex, race, and body surface area. RESULTS Peak Vo(2) (15.7 +/- 0.4 ml/kg/min vs. 23.0 +/- 0.6 ml/kg/min, respectively; p < 0.001), 6MWD (427 +/- 7 m vs. 538 +/- 10 m, respectively; p < 0.001), SPPB (10.3 +/- 0.2 vs. 10.9 +/- 0.2, respectively; p < 0.05), and leg power (117 +/- 5 W vs. 152 +/- 9 W, respectively; p = 0.004) were significantly lower in patients with HFpEF than HCs. Total fat mass, total percent fat, abdominal subcutaneous fat, intra-abdominal fat, and thigh intermuscular fat were significantly higher, whereas epicardial fat was significantly lower in patients with HFpEF than in HC. After we adjusted for total body fat, intra-abdominal fat remained significantly higher, while epicardial fat remained significantly lower in patients with HFpEF. Abdominal subcutaneous fat, thigh subcutaneous fat, and thigh intermuscular fat: skeletal muscle ratio were inversely associated, whereas epicardial fat was directly associated with peak Vo(2), 6MWD, SPPB, and leg power. Using multiple stepwise regression, we found intra-abdominal fat was the strongest independent predictor of peak Vo(2) and 6MWD. CONCLUSIONS In metabolic obese HFpEF, the pattern of regional adipose deposition may have important adverse consequences beyond total body adiposity. Interventions targeting intra-abdominal and intermuscular fat could potentially improve exercise intolerance. (Exercise Intolerance in Elderly Patients With Diastolic Heart Failure [SECRET]; NCT00959660) (C) 2018 by the American College of Cardiology Foundation.
引用
收藏
页码:640 / 649
页数:10
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