Alkahtani Shaea A
Department of Exercise Physiology, College of Sport Sciences and Physical Activity, King Saud University, PO Box 1949, Riyadh, 11441, Saudi Arabia.
BMC Res Notes. 2016 Sep 8;9(1):436. doi: 10.1186/s13104-016-2242-9.
The Global Physical Activity Questionnaire (GPAQ) has been recommended for the international tracking of physical activity (PA). This study aimed to investigate the agreement between the GPAQ and accelerometry, as well as the test-retest reliability of the GPAQ in Saudi college-age men.
The participants included 62 male students, aged 20.0 ± 1.1 year, with a mean body mass index (BMI) of 24.1 ± 6.3 kg/m(2). This study used a cross-sectional comparison of measures design. Participants completed the GPAQ twice (2 weeks apart) and wore accelerometers for seven consecutive days.
The agreement between the GPAQ and accelerometry for moderate to vigorous PA (MVPA) was weak (r ≤ 0.32). Participants underreported sedentary time relative to accelerometer measurements (∆ = 3.4 h/day). BMI was statistically associated with increased bias between the two methods. However, correlations between the GPAQ test and retest for MVPA and sedentary time were moderate to strong (r = 0.44-0.78).
The GPAQ is reliable, but had low agreement with accelerometry for estimating MVPA, and very low agreement with accelerometry for estimating sedentary time in college-age Saudi men. Individual participant characteristics should be considered when using the GPAQ to estimate sedentary time. Adapting the current GPAQ to build a regional PA questionnaire is recommended.
全球体力活动问卷（GPAQ）已被推荐用于国际体力活动（PA）追踪。本研究旨在调查GPAQ与加速度计之间的一致性，以及GPAQ在沙特大学生年龄男性中的重测信度。
参与者包括62名男性学生，年龄为20.0±1.1岁，平均体重指数（BMI）为24.1±6.3kg/m²。本研究采用测量设计的横断面比较。参与者完成两次GPAQ（间隔2周），并连续7天佩戴加速度计。
GPAQ与加速度计在中等到剧烈体力活动（MVPA）方面的一致性较弱（r≤0.32）。相对于加速度计测量，参与者少报了久坐时间（差值=3.4小时/天）。BMI与两种方法之间偏差的增加在统计学上相关。然而，GPAQ重测与MVPA和久坐时间之间的相关性为中度到高度（r=0.44-0.78）。
GPAQ是可靠的，但在估计MVPA方面与加速度计的一致性较低，在估计沙特大学生年龄男性的久坐时间方面与加速度计的一致性非常低。在使用GPAQ估计久坐时间时应考虑个体参与者特征。建议调整当前的GPAQ以构建区域体力活动问卷。
