Department of Occupational Therapy, Boston University College of Health and Rehabilitation Sciences: Sargent College, Massachusetts 02215, USA.
Am J Phys Med Rehabil. 2012 Jul;91(7):625-30. doi: 10.1097/PHM.0b013e31824fa81e.
The objective of this study was to evaluate how weight classification relates to meeting task constraints. Using a cross-sectional design, three-dimensional motion data were collected while children crossed obstacles of various heights. Twelve normal-weight (≥5th and <85th percentile on growth charts) and 12 overweight or obese (≥85th percentile on growth charts) 4- to 13-yr-olds participated. During obstacle crossing, children who were overweight or obese took longer to reach maximum knee height and to achieve foot contact (all P = 0.04). Normal-weight children landed flat-footed after obstacle crossing whereas overweight and obese children landed heel first (P = 0.04). Children had higher coefficients of variation for ankle position at heel contact after crossing medium obstacles (P = 0.02). Slower rates of obstacle crossing and landing heel first after crossing obstacles could be behind higher risks of falls for children who are overweight or obese.
本研究旨在评估体重分类与满足任务约束之间的关系。采用横断面设计，在儿童跨越不同高度障碍物时收集三维运动数据。12 名正常体重（生长图表上≥第 5 百分位且＜第 85 百分位）和 12 名超重或肥胖（生长图表上≥第 85 百分位）4 至 13 岁儿童参与了研究。在跨越障碍物时，超重或肥胖的儿童达到最大膝关节高度和脚接触所需的时间更长（均 P = 0.04）。正常体重的儿童在跨越障碍物后平足着地，而超重和肥胖的儿童则脚跟先着地（P = 0.04）。儿童在跨越中等障碍物后脚跟接触时踝关节位置的变异系数更高（P = 0.02）。超重或肥胖儿童跨越障碍物的速度较慢，脚跟先着地，这可能是他们摔倒风险较高的原因。
