Warner Erica T, Wolin Kathleen Y, Duncan Dustin T, Heil Daniel P, Askew Sandy, Bennett Gary G
Department of Epidemiology, Human Development and Health, Harvard School of Public Health, Boston, MA, USA.
Am J Health Behav. 2012 Mar;36(2):168-78. doi: 10.5993/AJHB.36.2.3.
To examine whether agreement between self-reported and accelerometer-measured physical activity varies by BMI category in a low-income black sample.
Participants completed a questionnaire and wore an accelerometer for 4-6 days. Using one- and 10-minute bouts, accelerometers measured light, moderate, and vigorous physical activity time.
Correlations varied by obesity (nonobese: one-minute r=0.41; 10-minute r=0.47; obese: one-minute r=0.21; 10-minute r=0 .14). Agreement was highest among nonobese persons (one-minute kappa = 0.48, 10-minute kappa = 0.023; obese: one-minute kappa = -0.024, 10- minute kappa = -0.020).
We found compromised questionnaire performance among obese participants.
在低收入黑人样本中,研究自我报告的身体活动与通过加速度计测量的身体活动之间的一致性是否因体重指数(BMI)类别而异。
参与者完成一份问卷,并佩戴加速度计4至6天。加速度计以1分钟和10分钟的时间段来测量轻度、中度和剧烈身体活动时间。
相关性因肥胖程度而异(非肥胖者:1分钟相关性r = 0.41;10分钟相关性r = 0.47;肥胖者:1分钟相关性r = 0.21;10分钟相关性r = 0.14)。非肥胖者之间的一致性最高(1分钟卡帕值= 0.48,10分钟卡帕值= 0.023;肥胖者:1分钟卡帕值= -0.024,10分钟卡帕值= -0.020)。
我们发现肥胖参与者的问卷表现较差。