Calibration of the Online Youth Activity Profile Assessment for School-Based Applications.
Calibration of the Online Youth Activity Profile Assessment for School-Based Applications.
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DOI：
10.1123/jmpb.2020-0048
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发表时间：
2021-09-01
期刊：
影响因子：
--
通讯作者：
da Silva, Michael Pereira
中科院分区：
文献类型：
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作者：
Welk, Gregory J;Saint-Maurice, Pedro F;da Silva, Michael Pereira
衡量措施的可行性和有效性之间的平衡是身体活动研究的一个重要考虑因素——特别是在针对青少年的学校研究中。本研究扩展了先前测试的校准方法，以开发和测试青年活动概况（YAP）工具在线版本的新方程，该工具是一种专为学校应用而设计的自我报告工具。收集不同地区和季节的数据，以开发更稳健、更通用的方程。该研究共有来自美国两个不同州的 33 所学校（374 所小学（9-11 岁）、224 所初中（11-14 岁）和 119 所高中（14-18 岁））的 717 名青少年参与。参与者佩戴 Sensewear 监测器整整一周，然后在学校完成在线 YAP，报告学校和家里的身体活动 (PA) 和久坐行为 (SB)。使用基于 R 的分割程序处理加速度计数据，以计算 PA 和 SB 级别。使用分位数回归模型与一半样本来开发特定于项目的 YAP 校准方程，并与剩余一半样本进行交叉验证。平均绝对百分比误差 (MAPE) 的计算值范围为 15-25%，其中中学样本的误差略低。在同一样本上进行测试时，与以前的版本相比，新方程的精度有所提高。 YAP 的在线版本提供了一种高效且有效的方法来获取青少年 PA 和 SB 的学校水平估计值。
A balance between the feasibility and validity of measures is an important consideration for physical activity research - particularly in school-based research with youth. The present study extends previously tested calibration methods to develop and test new equations for an online version of the Youth Activity Profile (YAP) tool, a self-report tool designed for school applications. Data were collected across different regions and seasons to develop more robust, generalizable equations. The study involved a total of 717 youth from 33 schools (374 elementary (ages 9-11), 224 middle (ages 11-14), and 119 high school (ages 14-18)) in two different states in the U.S. Participants wore a Sensewear monitor for a full week and then completed the online YAP at school to report physical activity (PA) and sedentary behaviors (SB) in school and at home. Accelerometer data were processed using an R-based segmentation program to compute PA and SB levels. Quantile regression models were used with half of the sample to develop item-specific YAP calibration equations and these were cross validated with the remaining half of the sample. Computed values of Mean Absolute Percent Error (MAPE) ranged from 15-25% with slightly lower error observed for the middle school sample. The new equations had improved precision compared to the previous versions when tested on the same sample. The online version of the YAP provides an efficient and effective way to capture school level estimates of PA and SB in youth.