Ken-Dror Gie, Lerman Yehuda, Segev Shlomo, Dankner Rachel
Department of Epidemiology and Preventive Medicine, Sackler Faculty of Medicine, Tel Aviv University.
Harefuah. 2004 Aug;143(8):566-72, 623.
The physical activity questionnaire is typically chosen for population studies because it is practical and does not interfere with the behavior of the surveyed individual. This instrument can be adapted for the particular studied population, and in terms of accuracy it is both reliable and valid.
To develop a valid and appropriate measure to assess physical fitness according to the level of physical activity throughout the day, and to estimate the relation between a subjective questionnaire measurement evaluating physical activity, to predicted VO2max, as an objective measure of physical fitness.
Three hundred healthy subjects, 150 men and 150 women, aged 25-65 years old participated in this study. All subjects were routinely examined in the Sheba Medical Center Executive Screening Survey. They were asked to complete a self-administered questionnaire and report on the level of physical activity at work, the level of sports activity and the level of leisure time non-sport activity. The index calculated from the questionnaire was compared to the result from a sub-maximal exercise test, which they performed in The Executive Screening Survey, to composite a valid questionnaire to estimate physical fitness.
A high and statistically significant correlation (r = 0.64, P < 0.01) was found between the indexes of physical activity calculated from the questionnaire to the predicted VO2max, measured from the sub-maximal exercise test. The reliability of the questionnaire was examined by test-retest and a high and statistically significant correlation (r = 0.89, P < 0.01) was found between the first and the proceeding one month administration of the questionnaire. The final modal to predict VO2max included a total index of physical activity, gender, BMI, age and resting heart rate. Overall this model predicted 58% of the VO2max.
The self-administered questionnaire developed in this study has high construct validity and a significant correlation to predicted VO2max, with high sensitivity in both sexes and among active and non-active subjects. It is therefore an appropriate tool to be used in epidemiological studies.
体力活动问卷通常被选用于人群研究，因为它很实用，且不会干扰被调查个体的行为。该工具可针对特定研究人群进行调整，在准确性方面既可靠又有效。
制定一种有效且合适的测量方法，根据全天体力活动水平评估身体健康状况，并估计评估体力活动的主观问卷测量值与预测的最大摄氧量（VO2max）之间的关系，最大摄氧量作为身体健康状况的客观测量指标。
300名健康受试者，150名男性和150名女性，年龄在25至65岁之间，参与了本研究。所有受试者均在舍巴医疗中心行政筛查调查中接受常规检查。他们被要求完成一份自我管理的问卷，并报告工作中的体力活动水平、体育活动水平和休闲时间非体育活动水平。将从问卷中计算出的指数与他们在行政筛查调查中进行的次最大运动测试结果进行比较，以合成一份有效问卷来估计身体健康状况。
从问卷中计算出的体力活动指数与次最大运动测试测量的预测VO2max之间存在高度且具有统计学意义的相关性（r = 0.64，P < 0.01）。通过重测检验问卷的可靠性，在问卷首次发放和一个月后的再次发放之间发现了高度且具有统计学意义的相关性（r = 0.89，P < 0.01）。预测VO2max的最终模型包括体力活动总指数、性别、体重指数、年龄和静息心率。总体而言，该模型预测了58%的VO2max。
本研究中开发的自我管理问卷具有较高的结构效度，与预测的VO2max具有显著相关性，在男性和女性以及活跃和不活跃受试者中均具有较高的敏感性。因此，它是流行病学研究中适用的工具。
