Bennett Gary G, Wolin Kathleen Y, Puleo Elaine, Emmons Karen M
Department of Society, Human Development and Health, Harvard School of Public Health, Dana-Farber Cancer Institute, Boston, MA, USA.
Med Sci Sports Exerc. 2006 Apr;38(4):768-73. doi: 10.1249/01.mss.0000210200.87328.3f.
We sought to characterize pedometer-determined physical activity among a predominantly racial and ethnic minority sample of adults residing in low-income housing.
Data were collected from 433 participants at baseline in a randomized colon cancer prevention intervention trial conducted within low-income housing communities. Using random effects models to control for clustering within housing sites, we examined variation in daily steps by several sociodemographic characteristics.
Participants recorded a mean of 5326 (+/- 3871 SD) daily steps over a 5-d sampling period. Significantly lower levels of pedometer-determined physical activity were found among older-aged participants (P < 0.0001), women (P = 0.02), those who were overweight and obese (P = 0.03), those reporting no weekly exercise (P = 0.04), as well as among nonworking individuals (P < 0.0001). No significant differences were found by education or income. In multivariable analyses, age, gender, body mass index, and employment status remained significantly associated with steps.
These findings suggest a high prevalence of physical inactivity among low-income housing residents. These data, derived from a well-characterized sample, provide useful estimates for the investigation of pedometers as measures of total accumulated physical activity among lower-income, racial and ethnic minority populations.
我们试图描述居住在低收入住房中的以种族和族裔少数群体为主的成年人样本中,通过计步器确定的身体活动情况。
在低收入住房社区内进行的一项随机结肠癌预防干预试验中,在基线时从433名参与者收集数据。使用随机效应模型来控制住房地点内的聚类情况,我们通过几种社会人口学特征检查了每日步数的差异。
在为期5天的采样期内,参与者平均每天记录5326步(标准差为±3871步)。在老年参与者(P<0.0001)、女性(P = 0.02)、超重和肥胖者(P = 0.03)、报告每周无运动者(P = 0.04)以及无工作者(P<0.0001)中,发现计步器确定的身体活动水平显著较低。在教育程度或收入方面未发现显著差异。在多变量分析中,年龄、性别、体重指数和就业状况仍然与步数显著相关。
这些发现表明低收入住房居民中身体不活动的患病率很高。这些数据来自一个特征明确的样本,为研究计步器作为低收入、种族和族裔少数群体总体累积身体活动的测量方法提供了有用的估计。