Rosa Clara Suemi da Costa, Gracia-Marco Luis, Barker Alan R, Freitas Ismael Forte, Monteiro Henrique Luiz
UNESP, Rio Claro, Bauru, Brazil.
Blood Purif. 2015;40(3):250-5. doi: 10.1159/000437040. Epub 2015 Sep 26.
To compare the short version of International Physical Activity Questionnaire (IPAQ) and the accelerometer measurement of physical activity (PA) in patients undergoing hemodialysis.
Sample consisted of 40 patients (19 men) aged 45 ± 16 years. Patients reported their PA using the IPAQ during a face-to-face interview, and wore an Actigraph GT3-X accelerometer for 1 week to obtain minutes per day of light PA, moderate-to-vigorous PA (MVPA) and total PA as well as raw counts per day (vector magnitude).
All PA-related variables were significantly correlated among instruments (r = 0.34-0.47) when analyzed as a group. However, when analyzed separately by gender, the relationships were present for women only (r = 0.46-0.62). IPAQ significantly underestimated light PA (IPAQ vs. accelerometer: 180.0 vs. 251.1 min/day, p = 0.019), but no differences were found between methods for MVPA and total PA.
Modest correlations were found between self-reported PA time by IPAQ (short version) and accelerometer, but only in women. However, the IPAQ may underestimate light PA, which is the main form of PA in this population.
比较国际体力活动问卷简版（IPAQ）与加速度计测量接受血液透析患者的体力活动（PA）情况。
样本包括40名年龄为45±16岁的患者（19名男性）。患者在面对面访谈中使用IPAQ报告其体力活动情况，并佩戴Actigraph GT3-X加速度计1周，以获取每天的轻度体力活动、中度至剧烈体力活动（MVPA）和总体力活动的分钟数以及每天的原始计数（矢量大小）。
作为一个整体分析时，所有与体力活动相关的变量在各测量工具之间均显著相关（r = 0.34 - 0.47）。然而，按性别分别分析时，仅在女性中存在这种关系（r = 0.46 - 0.62）。IPAQ显著低估了轻度体力活动（IPAQ与加速度计对比：180.0对251.1分钟/天，p = 0.019），但在中度至剧烈体力活动和总体力活动的测量方法之间未发现差异。
IPAQ（简版）自我报告的体力活动时间与加速度计测量结果之间存在适度相关性，但仅在女性中如此。然而，IPAQ可能低估了轻度体力活动，而轻度体力活动是该人群体力活动的主要形式。
