Aerobic and lung performance in premature children with and without chronic lung disease of prematurity

被引:57
作者
Kriemler, S
Keller, H
Saigal, S
Bar-Or, O
机构
[1] McMaster Univ, Childrens Exercise & Nutr Ctr, Hamilton, ON, Canada
[2] McMaster Univ, Dept Pediat, Neonatol Unit, Hamilton, ON, Canada
来源
CLINICAL JOURNAL OF SPORT MEDICINE | 2005年 / 15卷 / 05期
关键词
low birthweight; exercise capacity; pulmonary function; exercise-induced bronchoconstriction; prematurity;
D O I
10.1097/01.jsm.0000180023.44889.dd
中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
摘要
Objective: This study intended to identify pulmonary and exercise-related effects of chronic lung disease of infancy (CLD) versus prematurity (PRE) without CLD in children 5 to 7 years old who were born prematurely (24-30 weeks of gestation) with very low and extremely low birthweight of 500 to 1500 g (VLBW, ELBW). Subjects: Seventeen CLD and 14 PRE were compared with 24 term controls (CON). The premature children had no overt manifestations of a neuromuscular disease. Methods: Pulmonary function at rest and following exercise, and aerobic exercise performance were measured. Results: Peak (V)overdotO(2) and maximal aerobic power were not different among the groups, but O-2 uptake at a given mechanical power was higher in the CLD than in PRE and in CON (P < 0.05). At rest, forced vital capacity was significantly lower in CLD than in PRE (P < 0.05) and CON (P < 0.0005), and FEV1 and FEF25-75 were lower in CLD than CON (P < 0.0005 and P < 0.005, respectively). Exercise-induced bronchoconstriction (EIB) was more prevalent among the 2 premature groups (P < 0.05). Conclusions: our children 5 to 7 years old born at VLBW or ELBW, with or without CLD, have some degree of pulmonary dysfunction at rest and following exercise and a higher prevalence of EIB with no reduction in maximal aerobic exercise performance. The findings suggest that the pulmonary limitations are associated with low birthweight even in the absence of CLD. The higher O-2 uptake at a given mechanical power in the CLD group may cause early fatigability during prolonged exercise, even when aerobic performance is normal.
引用
收藏
页码:349 / 355
页数:7
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