Department of Epidemiology, University of Washington School of Public Health, Seattle, Washington, USA.
Am J Prev Med. 2009 Dec;37(6):488-94. doi: 10.1016/j.amepre.2009.07.013.
The health benefits of an active lifestyle are well established. However, Americans in general and American Indians specifically are not sufficiently active to achieve these health benefits.
This study presents the descriptive epidemiology of physical activity in a community-based sample of American-Indian adults.
Data came from Education and Research Towards Health (EARTH), a cross-sectional study conducted between December 2003 and April 2006 of 5207 American-Indian adults in South Dakota and Arizona. Physical activity was assessed using a culturally tailored, computer-assisted instrument. Both type and intensity of activities were measured; minutes per week averaged over the past year was the primary outcome. Individuals were categorized as being sufficiently active, not sufficiently active, or inactive using a cut point of more or less than 150 minutes/week. Information on age, gender, and BMI was also collected.
More than one third of participants were not sufficiently active (<150 minutes/week) and 18% reported no leisure-time activity. Sufficient activity was less often reported by women than men (41% vs 56%) and by participants from the Southwest than those from the Northern Plains (44% vs 50%). Of all activity categories, the most time was spent on household activities among all participants. There were clear trends in physical (in)activity across BMI strata; time spent in sedentary activities increased while leisure-time activity decreased with BMI.
American-Indian adults in this cohort exhibited levels of physical (in)activity similar to those of other racial/ethnic groups in the U.S., suggesting a need for specific interventions to increase activity levels across the population.
积极的生活方式对健康有益，这已得到充分证实。然而，美国人，尤其是美国印第安人，还没有足够活跃以获得这些健康益处。
本研究展示了基于社区的美国印第安成年人样本中身体活动的描述性流行病学。
数据来自于教育和研究促进健康（EARTH），这是一项在 2003 年 12 月至 2006 年 4 月期间在南达科他州和亚利桑那州进行的横断面研究，共纳入 5207 名美国印第安成年人。使用经过文化调整的计算机辅助工具评估身体活动。测量活动的类型和强度；过去一年每周的平均分钟数是主要结果。使用每周 150 分钟或以上的切点将个体分为足够活跃、不够活跃或不活跃。还收集了年龄、性别和 BMI 信息。
超过三分之一的参与者不够活跃（<150 分钟/周），18%的人没有休闲时间活动。女性比男性（41%比 56%）和来自西南部的参与者比来自北部平原的参与者（44%比 50%）更不常报告足够的活动。在所有活动类别中，所有参与者花费最多时间的是家务活动。身体（不）活动在 BMI 分层中存在明显趋势；随着 BMI 的增加，久坐活动的时间增加，而休闲时间活动减少。
在本队列中，美国印第安成年人的身体（不）活动水平与美国其他种族/族裔群体相似，这表明需要针对整个人群进行具体干预以提高活动水平。
