Validation of the Spanish version of the physical activity questionnaire used in the Nurses' Health Study and the Health Professionals' Follow-up Study
Validation of the Spanish version of the physical activity questionnaire used in the Nurses' Health Study and the Health Professionals' Follow-up Study
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DOI：
10.1079/phn2005745
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发表时间：
2005-10-01
影响因子：
3.2
通讯作者：
Martinez, JA
中科院分区：
文献类型：
--
作者：
Martínez-González, MA;López-Fontana, C;Martinez, JA
目的：以三轴加速度计(RT3 Triaxial Research Tracker)为参照，通过自编的西班牙语人群体力活动调查问卷(护士健康研究和卫生专业人员随访研究)，对能量消耗和久坐生活方式的估计进行效度检验。设计和地点：验证性研究，计算自填式问卷收集的体力活动水平和久坐生活方式与三轴加速度计测量的非参数相关系数。研究对象：研究人群由40名肥胖女性组成，她们是SUN(Sguimiento University De Navarra)项目(西班牙大学校友的前瞻性队列研究)的参与者。结果：自填式问卷调查得出的闲暇时间体力活动与加速度计估算的卡数(-1)呈中等相关(Spearman‘s Rho=0.507，95%可信区间(CI)0.232，0.707)。由问卷获得的久坐生活方式与体力活动之比与直接估计值(Rt3)之间的Spearman相关系数为-0.578(95%CI-0.754，-0.325)。卡帕指数为0.25(P=0.002)，用于评估对久坐不动的生活方式的二分法估计。只有2.5%的参与者被问卷错误分类，比RT3的估计值高出两个五分位数。结论：在效度次优的情况下获得的中等关联值和极低的误分率表明该问卷对20-50岁的西班牙语女性体力活动的评估是有效的。
Objective: The objective of this analysis was to test the validity of the estimates of energy expenditure and sedentary lifestyle obtained through a self-administered questionnaire of physical activity for Spanish-speaking people adapted from US questionnaires (Nurses' Health Study and Health Professionals' Follow-up Study) using a triaxial accelerometer (RT3 Triaxial Research Tracker) as the reference.Design and setting: Validation study, calculating the non-parametric correlation coefficients between the level of physical activity and sedentary lifestyle collected by the self-administered questionnaire and the triaxial accelerometer measurements. Percentage of misclassification and kappa coefficients were also calculated.Subjects: The study population consisted of a sample of 40 obese women who were participants of the SUN (Seguimiento Universidad de Navarra) project (a prospective cohort study among Spanish university alumni). They were selected because of their peculiar metabolic characteristics, in the search for a sub-optimal scenario for validity.Results: Physical activity during leisure time (estimated as MET-h week(-1)) derived from the self-administered questionnaire moderately correlated with kcal day(-1) assessed through the accelerometer (Spearman's rho=0.507, 95% confidence interval (CI) 0.232, 0.707). The Spearman correlation between the ratio of sedentary lifestyle to physical activity obtained through the questionnaire and the direct estimation (RT3) was -0.578 (95% CI -0.754, -0.325). The kappa index was 0.25 (P=0.002) when assessing the cross-classification into quintiles and 0.41 for the dichotomous estimation of a sedentary lifestyle. Only 2.5% of participants were misclassified by the questionnaire more than two quintiles apart from the estimates of the RT3.Conclusions: The moderate values obtained for correlation in a sub-optimal scenario for validity and the low percentage of extreme misclassification suggest the validity of the questionnaire to assess physical activity in Spanish-speaking women aged 20-50 years.