BACKGROUND Combining the strengths of physical activity (PA) diaries and questionnaires may be needed to improve the unsatisfying measurement quality of existing PA questionnaires. This study investigated the construct validity of a short PA questionnaire (Physical Activity Questionnaire for 24 h [PAQ24]) with a recall period of one day. METHODS In this cross-sectional study, participants completed the PAQ24 on seven consecutive days while wearing an accelerometer (GENEActiv). Thereafter, the Global Physical Activity Questionnaire (GPAQ) was completed. Spearman correlation coefficients and Bland-Altman analysis were used to assess construct validity. RESULTS Overall, 50 active adults (11 women, mean age = 25.1 ± 2.5) participated. Relative agreements between Total PA of PAQ24 and accelerometer were 0.37 ≤ ρ ≤ 0.72 for each day with satisfying agreement on five out of seven days. Weekly relative agreement for Total PA was moderate (ρ = 0.44). Relative agreements between PAQ24 and GPAQ were ρ = 0.43 for Total PA. Daily and weekly absolute agreements were poor indicated by wide limits of agreement. CONCLUSIONS In contrast to weekly Total PA, the majority of daily results of the PAQ24 showed satisfying construct validity. A short recall period may improve the measurement quality of PA questionnaires, but measurement errors and the costs of multiple administrations must be considered in future studies.

中文翻译：

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我们必须减少召回时间吗？在年轻活跃的成年人中进行日常体育锻炼问卷（PAQ24）的有效性。

背景技术可能需要结合体育锻炼（PA）日记和问卷的强度来改善现有PA问卷的测量质量。这项研究调查了一个简短的PA问卷（24小时的体育活动问卷[PAQ24]）的构造效度，召回期为一天。方法在这项横断面研究中，参与者戴着加速度计（GENEActiv）连续7天完成了PAQ24。此后，完成了《全球体育锻炼问卷》（GPAQ）。使用Spearman相关系数和Bland-Altman分析来评估构建的有效性。结果总体上，有50位活跃的成年人（11位女性，平均年龄= 25.1±2.5）参加了比赛。PAQ24的总PA与加速度计之间的相对协议为0.37≤ρ≤0。每天72天，并在7天中的5天中达成满意的协议。总PA的每周相对一致性是中等的（ρ= 0.44）。对于总PA，PAQ24和GPAQ之间的相对协议为ρ= 0.43。每天和每周的绝对协议差强人意，表明协议范围广泛。结论与每周总PA相比，PAQ24的大多数日常结果显示令人满意的构建体有效性。较短的召回期可以提高PA问卷的测量质量，但是在以后的研究中必须考虑测量误差和多次给药的成本。结论与每周总PA相比，PAQ24的大部分每日结果显示令人满意的构建体有效性。较短的召回期可以提高PA问卷的测量质量，但是在以后的研究中必须考虑测量误差和多次给药的成本。结论与每周总PA相比，PAQ24的大部分每日结果显示令人满意的构建体有效性。较短的召回期可以提高PA问卷的测量质量，但是在以后的研究中必须考虑测量误差和多次给药的成本。