大学生自我报告与客观测量的久坐行为及身体活动的比较。
Comparison of Self-Reported and Objectively Measured Sedentary Behavior and Physical Activity in Undergraduate Students.
作者信息
Nelson Megan C, Taylor Katie, Vella Chantal A
机构信息
University of Idaho, Department of Movement Sciences, Exercise Physiology Research Laboratory, Moscow, ID.
Eastern Washington University, Department of Physical Education, Health and Recreation, Cheney, WA.
出版信息
Meas Phys Educ Exerc Sci. 2019;23(3):237-248. doi: 10.1080/1091367X.2019.1610765. Epub 2019 May 7.
OBJECTIVE
To investigate differences between estimates of sedentary behavior and physical activity (PA) from the International Physical Activity Questionnaire (IPAQ) and accelerometry in undergraduate students.
PARTICIPANTS
91 students participated in the study.
METHODS
Sedentary behavior and PA were objectively measured by an accelerometer for 7 days and then self-reported with the IPAQ. Partial correlations were used to assess associations among PA variables and participant characteristics between the methods. Agreement was assessed via the Bland-Altman method.
RESULTS
Correlation coefficients between self-reported and objectively measured PA ranged from 0.21 to 0.38 (≤0.05 for all). A higher proportion of students were classified as meeting PA guidelines via self-report compared to objective measurements. Bland-Altman plots revealed acceptable agreement between methods, however, bias was evident for all PA intensities. Sex and lean body mass impacted these differences.
CONCLUSIONS
Researchers should exercise caution when interpreting PA assessed via the IPAQ in undergraduate students.
目的
探讨国际体力活动问卷（IPAQ）与加速度计测量的大学生久坐行为和体力活动（PA）估计值之间的差异。
参与者
91名学生参与了该研究。
方法
使用加速度计客观测量久坐行为和PA 7天，然后通过IPAQ进行自我报告。采用偏相关分析评估两种方法之间PA变量与参与者特征之间的关联。通过Bland-Altman方法评估一致性。
结果
自我报告的PA与客观测量的PA之间的相关系数范围为0.21至0.38（均≤0.05）。与客观测量相比，通过自我报告被归类为符合PA指南的学生比例更高。Bland-Altman图显示两种方法之间具有可接受的一致性，然而，所有PA强度均存在明显偏差。性别和瘦体重影响了这些差异。
结论
研究人员在解释通过IPAQ评估的大学生PA时应谨慎。
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