Weekly Physical Activity from IPAQ (Arabic) Recalls and from IDEEA Activity Meters

Objective: Determine the Test reliability and the objective validity of the International Physical Activity Questionnaire (IPAQ). Methods: IPAQ was evaluated for test-retest reliability within 6 - 8 days of its first administration. Criterion validity was tested comparing IPAQ data with those from an activity meter (Intelligent Device for Energy Expenditure and Activity, IDEEA). Results: The test-retest correlation (n = 71) for items of IPAQ ranged from r = 0.63 to r = 0.74 and was r = 0.79 for the total weekly PA in MET*min per week. Average PA (in MET*min/week) measured with the IDEEA meter, decreased from normal (15,840), to 14,278 in overweight (BMI > 25- < 30) and further to 12,803 in obese subjects (>30. BMI). The weekly energy expenditure measured by IDEEA correlated significantly (r = 0.61, r2 = 0.38) with the IPAQ data, providing an objective criterion for validity of IPAQ. The mean values of weekly PA estimated from IPAQ (in MET*min/week) differed significantly in the high (15,690) vs. the low (11,398) activity groups but not between the moderate (12,056) compared to the low PA group. The IPAQ criteria used to categorize subjects as moderately active, erred by including too many low PA subjects. IDEEA measurements in sedentary subjects overestimated their energy expenditure. Conclusions: IPAQ can be reliably used to distinguish low and high PA groups and yields relatively low estimates (−18%) of weekly PA in these groups compared to those measured with the activity meter. Stricter criteria are needed to distinguish moderate from low PA groups. Overweight and obese subjects showed significantly lower levels of PA than normal BMI subjects. IDEEA overestimates low levels of PA.

七天体力活动回顾问卷中文版信度与效度研究

目的:评价七天体力活动回顾问卷中文版的信度和效度。方法:汉化七天体力活动回顾问卷后,募集社会志愿者20名,用间隔2周重复测定,计算2次问卷得分之间的组内相关系数的方法评价问卷的重测信度。志愿者91名参加效度评价,以症状限制性运动平板试验获得的最大代谢当量、Bruce方案2级运动心率作为参照标准,用计算问卷测得的每日代谢当量值与参照指标之间的Spearman相关系数的方法来评价问卷的效度。结果:2次问卷得分之间的组内相关系数为0.941,P<0.01,各条目2次得分之间的组内相关系数在0.877—1.000之间,P<0.01。问卷得分与运动试验最大代谢当量之间呈正相关,r=0.409,P<0.01,与Bruce2级运动心率之间为负相关,r=-0.416,P<0.01。结论:七天体力活动回顾问卷中文版具有良好的重测信度和结构效度,简单并易于实施,适合推广用于国人体力活动情况的测量。

维持性血液透析患者体力活动水平的追踪研究

目的探讨维持性血液透析患者3个时点历时共1年的体力活动水平变化情况。方法采用纵向研究设计,使用7 d体力活动回顾问卷(7-day Physical Activity Recall Questionnaire,PAR)对维持性血液透析患者每半年进行体力活动水平追踪调查,历时1年共3次。取维持性血液透析患者3个时点中每日能量消耗值最高的时点二,与既往研究中健康人群每日能量消耗值相比较。结果完整进行了3次调查的患者共155例。1年时间中,维持性血液透析患者的体力活动水平与健康人群相比显著降低,并在1年时间中维持这一较低的水平,没有明显线性变化趋势,3个时点的每日能量消耗值分别为(141.13±8.25)、(142.94±10.09)、(141.40±7.90)kJ/(kg.d);患者参与的体力活动种类以轻度体力活动为主,重度、极重度体力活动参与率均低于3%。结论维持性血液透析患者的体力活动水平在1年时间中相对较稳定,但是较健康人群显著降低,而且种类单一。今后有必要对此类患者开展体力活动方面的健康教育,以提高维持性血液透析患者体力活动水平,改善其生活质量。