FAMILY: A Jockey Club Initiative for a Harmonious Society, School of Public Health, Li Ka Shing Faculty of Medicine, University of Hong Kong, Pokfulam, Hong Kong.
Int J Behav Nutr Phys Act. 2011 Aug 1;8:81. doi: 10.1186/1479-5868-8-81.
The International Physical Activity Questionnaire (IPAQ-SF) has been validated and recommended as an efficient method to assess physical activity, but its validity has not been investigated in different population subgroups. We examined variations in IPAQ validity in the Hong Kong Chinese population by six factors: sex, age, job status, educational level, body mass index (BMI), and visceral fat level (VFL).
A total of 1,270 adults (aged 42.9 ± SD 14.4 years, 46.1% male) completed the Chinese version of IPAQ (IPAQ-C) and wore an accelerometer (ActiGraph) for four days afterwards. The IPAQ-C and the ActiGraph were compared in terms of estimated Metabolic Equivalent Task minutes per week (MET-min/wk), minutes spent in activity of moderate or vigorous intensity (MVPA), and agreement in the classification of physical activity.
The overall Spearman correlation (ρ) of between the IPAQ-C and ActiGraph was low (0.11 ± 0.03; range in subgroups 0.06-0.24) and was the highest among high VFL participants (0.24 ± 0.05). Difference between self-reported and ActiGraph-derived MET-min/wk (overall 2966 ± 140) was the smallest among participants with tertiary education (1804 ± 208). When physical activity was categorized into over or under 150 min/wk, overall agreement between self-report and accelerometer was 81.3% (± 1.1%; subgroup range: 77.2%-91.4%); agreement was the highest among those who were employed full-time in physically demanding jobs (91.4% ± 2.7%).
Sex, age, job status, educational level, and obesity were found to influence the criterion validity of IPAQ-C, yet none of the subgroups showed good validity (ρ = 0.06 to 0.24). IPAQ-SF validity is questionable in our Chinese population.
国际体力活动问卷（IPAQ-SF）已被验证并推荐为评估体力活动的有效方法，但在不同人群亚组中其有效性尚未得到研究。我们通过六个因素研究了 IPAQ 在香港华人人群中的有效性变化：性别、年龄、工作状态、教育程度、体重指数（BMI）和内脏脂肪水平（VFL）。
共有 1270 名成年人（年龄 42.9 ± SD 14.4 岁，46.1%为男性）完成了中文版本的 IPAQ（IPAQ-C），并在之后的四天内佩戴了加速度计（ActiGraph）。比较了 IPAQ-C 和 ActiGraph 在每周代谢当量任务分钟（MET-min/wk）、中高强度活动（MVPA）所花费的分钟数以及体力活动分类的一致性。
IPAQ-C 和 ActiGraph 之间的总体斯皮尔曼相关系数（ρ）较低（0.11 ± 0.03；亚组范围为 0.06-0.24），在高 VFL 参与者中最高（0.24 ± 0.05）。自我报告和 ActiGraph 衍生的 MET-min/wk 之间的差异（总体为 2966 ± 140）在接受过高等教育的参与者中最小（1804 ± 208）。当体力活动分为 150min/wk 以上或以下时，自我报告和加速度计之间的总一致性为 81.3%（± 1.1%；亚组范围：77.2%-91.4%）；在全职从事体力要求高的工作的人中，一致性最高（91.4% ± 2.7%）。
性别、年龄、工作状态、教育程度和肥胖被发现影响 IPAQ-C 的标准效度，但没有一个亚组表现出良好的效度（ρ=0.06-0.24）。在我们的中国人群中，IPAQ-SF 的有效性值得怀疑。
