Relations of adiposity and effects of training on the left ventricle in obese youths

被引:27
作者
Humphries, MC [1 ]
Gutin, B [1 ]
Barbeau, P [1 ]
Vemulapalli, S [1 ]
Allison, J [1 ]
Owens, S [1 ]
机构
[1] Med Coll Georgia, Dept Radiol, Dept Pediat, Georgia Prevent Inst, Augusta, GA 30912 USA
关键词
pediatrics; body fat; physical training; visceral adipose tissue; left ventricular structure;
D O I
10.1097/00005768-200209000-00005
中图分类号
G8 [体育];
学科分类号
04 ; 0403 ;
摘要
Purpose: 1) To determine the relations of left ventricular (LV) structure and function to total body composition, visceral adipose tissue (VAT), and hemodynamics in obese children; 2) to determine the effects of 4-month of physical training (PT) on LV structure and function and hemodynamics; and 3) to explore determinants of individual variability in response to PT. Methods: Measurements included LV structure/function with echocardiography, total body composition with dual-energy x-ray absorptiometry, VAT with magnetic resonance imaging (MRI), and resting and exercising hemodynamics with a Dinamap monitor and Doppler-echocardiography. Youths were randomly assigned to engage in PT for the first or second 4- month periods of the 8-month intervention period. Results: Correlation and regression at baseline showed that elevated LV mass was associated with excess general and visceral adiposity, and elevated cardiac output. Although the PT had favorable effects on percent body fat and VAT, no significant changes were found in LV or hemodynamic variables. Over the 4-month period of the PT intervention, those who increased the most in VAT tended to increase the most in LV mass. Conclusion: General and visceral adiposity were associated with elevated LV mass. However, no evidence was provided that 4 months of PT had a significant effect on LV or hemodynamic variables.
引用
收藏
页码:1428 / 1435
页数:8
相关论文
共 32 条
[1]   Association between multiple cardiovascular risk factors and atherosclerosis in children and young adults [J].
Berenson, GS ;
Srinivasan, SR ;
Bao, WH ;
Newman, WP ;
Tracy, RE ;
Wattigney, WA .
NEW ENGLAND JOURNAL OF MEDICINE, 1998, 338 (23) :1650-1656
[2]   Fat distribution and cardiovascular risk factors in obese adolescent girls: Importance of the intraabdominal fat depot [J].
Caprio, S ;
Hyman, LD ;
McCarthy, S ;
Lange, R ;
Bronson, M ;
Tamborlane, WV .
AMERICAN JOURNAL OF CLINICAL NUTRITION, 1996, 64 (01) :12-17
[3]   Association of body fat distribution and cardiovascular risk factors in children and adolescents [J].
Daniels, SR ;
Morrison, JA ;
Sprecher, DL ;
Khoury, P ;
Kimball, TR .
CIRCULATION, 1999, 99 (04) :541-545
[4]   INDEXING LEFT-VENTRICULAR MASS TO ACCOUNT FOR DIFFERENCES IN BODY-SIZE IN CHILDREN AND ADOLESCENTS WITHOUT CARDIOVASCULAR-DISEASE [J].
DANIELS, SR ;
KIMBALL, TR ;
MORRISON, JA ;
KHOURY, P ;
MEYER, RA .
AMERICAN JOURNAL OF CARDIOLOGY, 1995, 76 (10) :699-701
[5]   Midwall left ventricular mechanics - An independent predictor of cardiovascular risk in arterial hypertension [J].
deSimone, G ;
Devereux, RB ;
Koren, MJ ;
Mensah, GA ;
Casale, PN ;
Laragh, JH .
CIRCULATION, 1996, 93 (02) :259-265
[6]  
DESPRES JP, 1997, EXERCISE SPORT SCI R, P271
[7]  
DEVEREUX RB, 1992, CARDIOVASC REV REP, V13, P24
[8]  
Feigenbaum H., 1994, ECHOCARDIOGR-J CARD, P181
[9]   Relations of body composition to left ventricular geometry and function in children [J].
Gutin, B ;
Treiber, F ;
Owens, S ;
Mensah, GA .
JOURNAL OF PEDIATRICS, 1998, 132 (06) :1023-1027
[10]   Body-composition measurement in 9-11-y-old children by dual-energy X-ray absorptiometry, skinfold-thickness measurements, and bioimpedance analysis [J].
Gutin, B ;
Litaker, M ;
Islam, S ;
Manos, T ;
Smith, C ;
Treiber, F .
AMERICAN JOURNAL OF CLINICAL NUTRITION, 1996, 63 (03) :287-292