Effects of Adiposity on Physical Activity in Childhood: Iowa Bone Development Study
Effects of Adiposity on Physical Activity in Childhood: Iowa Bone Development Study
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DOI：
10.1249/mss.0b013e3181ef3b0a
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发表时间：
2011-03-01
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影响因子：
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通讯作者：
Levy, Steven M.
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文献类型：
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作者：
Kwon, Soyang;Janz, Kathleen F.;Levy, Steven M.
书名/作者声明：[by]T.L.肥胖对儿童体力活动的影响：爱荷华州骨发育研究。地中海医院。SCI。《体育运动》，第43卷，第3期，第443-448页，2011年。目的：这项研究的目的是检查肥胖水平是否与随后的儿童期体力活动(PA)水平有关。方法：研究参与者是参加爱荷华州骨发育研究的326名儿童。在大约5、8和11岁时，使用加速计和双能X射线吸收测量仪(DXA)测量动脉压和脂肪质量。还收集了相关变量的数据，如父母的教育程度、PA水平和家庭收入。性别相关的广义线性模型适用于检验8岁体脂百分比(%BF)和11岁强度加权中强度到高强度PA(IW-MVPA)之间的关系。结果：在调整了8岁IW-MVPA后，8岁到11岁检查的间隔、5岁到8岁的%BF和IW-MVPA的剩余变化分数、母亲的教育程度，8岁的%BF与11岁的IW-MVPA呈负相关(P<；0.05)。在女孩中，调整了8岁时的IW-MVPA、身体成熟度和家庭收入后，8岁时的%BF与11岁时的IW-MVPA呈负相关(P<0.05)。分类数据分析还显示，8岁时%BF高的男孩和女孩在11岁时处于IW-MVPA的最低四分位数相对于IW-MVPA最高四分位数的优势比(OR=4.38，男孩95%CI=1.05-18.24；女孩OR=4.48，95%CI=1.35-14.85)大约高四倍。结论：本研究提示肥胖水平可能是PA行为的决定因素。可能需要针对超重儿童的特定干预策略来促进PA。
KWON, S., K. F. JANZ, T. L. BURNS, and S. M. LEVY. Effects of Adiposity on Physical Activity in Childhood: Iowa Bone Development Study. Med. Sci. Sports Exerc., Vol. 43, No. 3, pp. 443-448, 2011. Purpose: The aim of this study was to examine whether adiposity level is associated with subsequent physical activity (PA) level in childhood. Methods: Study participants were 326 children participating in the Iowa Bone Development Study. PA and fat mass were measured using accelerometers and dual-energy x-ray absorptiometry (DXA) at approximately 5, 8, and 11 yr. Data for relevant variables such as parents' education and PA levels and family income were also collected. Gender-specific generalized linear models were fit to examine the association between percentage body fat (%BF) at age 8 and intensity-weighted moderate-to vigorous-intensity PA (IW-MVPA) at age 11. Results: After adjusting for IW-MVPA at age 8, the interval between the age 8 and 11 examinations, residualized change scores of %BF and IW-MVPA from age 5 to 8, and mother's education level, %BF at age 8 was negatively associated with IW-MVPA at age 11 among boys (P < 0.05). After adjusting for IW-MVPA at age 8, physical maturity, and family income, %BF at age 8 was negatively associated with IW-MVPA at age 11 among girls (P G 0.05). Categorical data analysis also showed that the odds ratio (OR) of being in the lowest quartile relative to the highest quartile of IW-MVPA at age 11 for boys and girls with high %BF at age 8 were approximately four times higher than the OR for those with low % BF at age 8 (OR = 4.38, 95% CI = 1.05-18.24 for boys; OR = 4.48, 95% CI = 1.35-14.85 for girls). Conclusions: This study suggests that adiposity level may be a determinant of PA behavior. Specific intervention strategies for overweight children may be needed to promote PA.