Shanghai Jiao Tong University School of Nursing, No.227, South Chongqing Rd, Shanghai, 200025, China.
Department of Biomedical Engineering, National University of Singapore, Singapore, Singapore.
BMC Nephrol. 2021 Jan 8;22(1):17. doi: 10.1186/s12882-021-02230-3.
Valid instruments for measuring physical activity at the low end of the physical activity range and producing quantitative results are required among dialysis patients who are extremely inactive. This study aimed to translate and adapt a Chinese version of the low physical activity questionnaire (LoPAQ) and to examine its reliability and validity among hemodialysis patients.
This was a cross-sectional study. The LoPAQ was translated into Chinese and culturally adapted following the standardized questionnaire adaptation process. Participants wore an ActiGraph for seven consecutive days and were asked to complete the Chinese version of the LoPAQ (C-LoPAQ) following the ActiGraph monitoring period. The criterion validity of the C-LoPAQ was examined with accelerometers using Spearman's correlation coefficients. Bland-Altman plots were adopted to determine the absolute agreement between methods. The test-retest reliability was analyzed using the intraclass correlation coefficient (ICC).
Eighty-five hemodialysis patients had valid accelerometers and C-LoPAQ data. The total walking time reported on LoPAQ was correlated with step counts by ActiGraph (rho = 0.47, p < 0.01). A moderate correlation was also observed between the C-LoPAQ and the ActiGraph-measured physical activity for total calories (rho = 0.44, p < 0.01). There was a fair correlation between ActiGraph-measured sedentary time and C-LoPAQ-measured inactive time (rho = 0.22, p < 0.05). The test-retest reliability coefficients of C-LoPAQ ranged from 0.30 to 0.66.
The C-LoPAQ demonstrated moderate validity for measuring low levels of physical activity, especially walking, and total kilocalories of physical activity among hemodialysis patients in China.
极度不活跃的透析患者需要能够测量低活动范围的体力活动并产生定量结果的有效工具。本研究旨在翻译和改编中文版低体力活动问卷（LoPAQ），并检验其在中国血液透析患者中的信度和效度。
这是一项横断面研究。LoPAQ 被翻译成中文，并按照标准化问卷改编过程进行文化适应性改编。参与者佩戴加速度计连续 7 天，并在加速度计监测期后完成中文版 LoPAQ（C-LoPAQ）。使用 Spearman 相关系数检验 C-LoPAQ 的效标效度。采用 Bland-Altman 图确定两种方法之间的绝对一致性。采用组内相关系数（ICC）分析测试-重测信度。
85 名血液透析患者有有效的加速度计和 C-LoPAQ 数据。LoPAQ 报告的总步行时间与加速度计测量的步数呈正相关（rho = 0.47，p < 0.01）。C-LoPAQ 与加速度计测量的总卡路里的身体活动之间也存在中度相关性（rho = 0.44，p < 0.01）。加速度计测量的久坐时间与 C-LoPAQ 测量的不活动时间之间存在适度相关性（rho = 0.22，p < 0.05）。C-LoPAQ 的测试-重测信度系数范围为 0.30 至 0.66。
C-LoPAQ 在中国血液透析患者中测量低水平体力活动（尤其是步行和总千卡体力活动）具有中等有效性。
