Joseph Rodney P, Keller Colleen, Adams Marc A, Ainsworth Barbara E
1Postdoctoral Fellow,College of Nursing and Health Innovation,Arizona State University,Phoenix,Arizona,USA.
2Professor,College of Nursing and Health Innovation,Arizona State University,Phoenix,Arizona,USA.
Prim Health Care Res Dev. 2016 May;17(3):265-76. doi: 10.1017/S1463423615000390. Epub 2015 Jul 16.
To evaluate the validity of the Stanford Brief Activity Survey (SBAS) and Exercise Vital Sign (EVS) questionnaire against accelerometer-determined time in moderate-to-vigorous physical activity (MVPA) among African-American (AA) women.
Limited research has evaluated the validity of brief physical activity (PA) questionnaires among AA women. Since the validity of PA questionnaires may differ among members of varying racial/ethnic groups, research is needed to explore the validity of self-report PA measures among AA women.
A total of 30 AA women [M age = 35.5 ± 5.3; M body mass index (BMI) = 31.1 ± 7.8] wore ActiGraph GT3X+ accelerometers (ActiGraph, LLC, Pensacola FL, USA) for seven days and completed both the SBAS and EVS at two different assessment periods (T1 and T2). Criterion validity was calculated using Spearman's rank order correlations between each questionnaire score and accelerometer-measured MVPA. Sensitivity, specificity, and positive and negative predictive values were calculated using accelerometer-measured MVPA as the criterion to determine the ability of each questionnaire to predict whether or not a participant was meeting the 2008 US PA Guidelines.
Spearman correlation coefficients between questionnaire scores and minutes of accelerometer-measured MVPA were low (EVS, r = 0.27 at T1 and r = 0.26 at T2; SBAS, r = 0.10 at T1 and r = 0.28 at T2) and not statistically significant (P's > 0.05). The EVS had sensitivity, specificity, and negative and positive predictive values of 27, 89, 59, and 68% at T1 and 33, 74, 38, and 70% at T2, respectively. The SBAS had sensitivity, specificity, and negative and positive predictive values were 18, 79, 33, and 62% at T1 and 67, 58, 43, and 79% at T2. While both questionnaires may be useful in identifying AA women who do not meet the 2008 PA Guidelines, using the questionnaires to identify AA women meeting the PA Guidelines should be done with caution.
评估斯坦福简短活动调查问卷（SBAS）和运动生命体征（EVS）问卷相对于加速度计测定的非裔美国（AA）女性中度至剧烈身体活动（MVPA）时间的有效性。
针对AA女性简短身体活动（PA）问卷有效性的研究有限。由于PA问卷的有效性在不同种族/族裔群体成员中可能存在差异，因此需要开展研究以探索AA女性自我报告PA测量方法的有效性。
共有30名AA女性[平均年龄=35.5±5.3岁；平均体重指数（BMI）=31.1±7.8]佩戴ActiGraph GT3X+加速度计（美国佛罗里达州彭萨科拉市ActiGraph有限责任公司）7天，并在两个不同评估期（T1和T2）完成SBAS和EVS。使用每个问卷得分与加速度计测量的MVPA之间的斯皮尔曼等级相关性计算效标效度。以加速度计测量的MVPA为标准计算敏感性、特异性以及阳性和阴性预测值，以确定每个问卷预测参与者是否符合2008年美国PA指南的能力。
问卷得分与加速度计测量的MVPA分钟数之间的斯皮尔曼相关系数较低（EVS，T1时r=0.27，T2时r=0.26；SBAS，T1时r=0.10，T2时r=0.28），且无统计学意义（P>0.05）。EVS在T1时的敏感性、特异性、阴性和阳性预测值分别为27%、89%、59%和68%，在T2时分别为33%、74%、38%和70%。SBAS在T1时的敏感性、特异性、阴性和阳性预测值分别为18%、79%、33%和62%，在T2时分别为67%、58%、43%和79%。虽然两份问卷在识别未达到2008年PA指南的AA女性方面可能有用，但使用问卷识别达到PA指南的AA女性时应谨慎。
