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首页> 外文期刊>Preventive Medicine: An International Journal Devoted to Practice and Theory >Evaluation of youth pedometer-determined physical activity guidelines using receiver operator characteristic curves.
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Evaluation of youth pedometer-determined physical activity guidelines using receiver operator characteristic curves.

机译：使用接收者操作员特征曲线评估青年计步器确定的体育锻炼指南。

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OBJECTIVE: Evidence-based pedometer guidelines have not been sufficiently validated in youth. The purpose of this paper was to evaluate the utility of current pedometer-determined physical activity guidelines for youth. METHODS: Participants (n=812, mean age 9.7 years) were from two Midwestern communities during Fall 2005. Participants completed 7 days of pedometer monitoring using a Digiwalker 200-SW. ROC analyses were utilized to assess the utility of the cutpoints in reference to weight status. The percentage of subjects meeting physical activity recommendations (steps/day) was determined using two published recommendations. RESULTS: The mean (SD) steps/day for boys, girls, and sexes combined were 12,709 (3,384), 10,834 (2562), and 11,665 (3028), respectively. Depending on the recommendation, approximately 55-75% of children did not meet the recommended number of steps/day. Sensitivity was high and specificity was low for both current guidelines evaluated. The ROC analysis indicated that lowering the steps/day cutpoint for boys and girls may increase accuracy. CONCLUSIONS: This study demonstrates that a large percentage of children from two Midwestern communities do not meet current pedometer-based physical activity recommendations. Because the percentage of children categorized as active or inactive depends on the criteria that are employed, it is recommended that researchers select cutpoints based on the preferred context of application.
机译：目的：基于证据的计步器指南尚未在青年中得到充分验证。本文的目的是评估当前由计步器确定的青少年体育锻炼指南的实用性。方法：参与者（n = 812，平均年龄9.7岁）来自2005年秋季的两个中西部社区。参与者使用Digiwalker 200-SW完成了7天的计步器监控。 ROC分析用于评估体重状态下切点的效用。使用两项已发布的建议来确定达到体育锻炼建议的受试者的百分比（步骤/天）。结果：男孩，女孩和性别的平均每日（SD）步数分别为12,709（3,384），10,834（2562）和11,665（3028）。根据建议，大约55-75％的儿童未达到建议的每日步数。对于当前评估的两个指南，敏感性高而特异性低。 ROC分析表明，降低男孩和女孩的步数/天的临界点可能会提高准确性。结论：这项研究表明，来自中西部两个社区的很大一部分儿童不符合当前基于计步器的体育锻炼建议。由于被归类为活跃或不活跃的儿童百分比取决于所采用的标准，因此建议研究人员根据首选的应用环境选择切点。

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