Boreham C A, Twisk J, Savage M J, Cran G W, Strain J J
University of Ulster at Jordanstown, Northern Ireland.
Med Sci Sports Exerc. 1997 Jun;29(6):788-93. doi: 10.1097/00005768-199706000-00009.
The purpose of this study was to analyze the relationships between physical activity (ACT), including sports participation (SP) and antecedent risk factors for coronary heart disease (CHD), in a representative sample of adolescents from Northern Ireland, a region of high coronary mortality. Biological and behavioral risk factors were measured in a random sample of 1015 school children aged 12 and 15 yr. ACT and SP were assessed by self-report questionnaire, and relationships with biological risk factors were analyzed with stepwise multiple linear regression after controlling for potential confounders. Results showed that in 15-yr-old males ACT was beneficially associated with systolic blood pressure (P < 0.05), lipid profile, and cardiorespiratory fitness (both P < 0.01). In 15-yr-old females, SP was associated beneficially with fatness and cardiorespiratory fitness. Odds ratios calculated from logistic regression revealed that for the older children, a relatively small drop (-20%) in ACT (boys) or SP (girls) was significantly related to the probability of exposure to multiple risk factors. Overall, relationships were stronger for males rather than females and for older rather than younger children. This study provides further evidence for beneficial associations between ACT, SP, and CHD risk status in adolescents.
本研究的目的是在北爱尔兰（冠心病死亡率较高的地区）青少年的代表性样本中，分析身体活动（ACT）（包括体育参与（SP））与冠心病（CHD）的前期危险因素之间的关系。对1015名12岁和15岁学童的随机样本测量了生物和行为危险因素。通过自我报告问卷评估ACT和SP，并在控制潜在混杂因素后，用逐步多元线性回归分析与生物危险因素的关系。结果显示，在15岁男性中，ACT与收缩压（P<0.05）、血脂谱和心肺适能均呈有益关联（均P<0.01）。在15岁女性中，SP与肥胖和心肺适能呈有益关联。根据逻辑回归计算的比值比显示，对于年龄较大的儿童，ACT（男孩）或SP（女孩）相对较小的下降（-20%）与暴露于多种危险因素的概率显著相关。总体而言，男性的关联比女性更强，年龄较大的儿童比年龄较小的儿童更强。本研究为ACT、SP与青少年CHD风险状况之间的有益关联提供了进一步证据。
