Dept of Family and Preventive Medicine, University of Utah, Salt Lake City, UT, USA.
J Phys Act Health. 2010 Sep;7(5):571-6. doi: 10.1123/jpah.7.5.571.
Only 25% of US adults achieve adequate physical activity (PA). Obtaining a PA history is an appropriate first step when evaluating this behavior. The Physical Activity Vital Sign (PAVS) is a clinical tool designed to screen for PA in adults.
To determine how responses to the PAVS questions associate with BMI, overweight, and obesity, we performed a cross-sectional study utilizing the PAVS, and measured height and weight. Data were collected from adults at 2 clinics within the Utah Health Research Network.
Adjusting for demographic factors, BMI decreased 0.91 units for every reported day of PA during a typical week (P < .001), and the odds of obesity was significantly decreased by 0.73 for every day of PA reported in a typical week, (P = .001).
Response to the PAVS question of typical behavior is highly correlated with BMI. Although response to the PAVS question of behavior last week is not correlated, this question may prompt accurate recall to the typical week question and help guide patient counseling. Our results support the construct validity for the use of the PAVS as a clinical screening tool and suggest the need for additional research to characterize the properties of the PAVS.
仅有 25%的美国成年人达到了足够的身体活动（PA）水平。当评估这种行为时，获取 PA 历史是一个适当的第一步。身体活动生命体征（PAVS）是一种临床工具，旨在筛查成年人的 PA。
为了确定 PAVS 问题的回答与 BMI、超重和肥胖之间的关联，我们进行了一项横断面研究，使用 PAVS 测量了身高和体重。数据来自犹他州健康研究网络内的 2 家诊所的成年人。
在调整人口统计学因素后，每周报告的 PA 天数每增加一天，BMI 降低 0.91 个单位（P<0.001），每周报告的 PA 天数每增加一天，肥胖的几率显著降低 0.73（P=0.001）。
对 PAVS 典型行为问题的回答与 BMI 高度相关。虽然对 PAVS 上周行为问题的回答没有相关性，但这个问题可能会提示准确回忆到典型周问题，并有助于指导患者咨询。我们的结果支持将 PAVS 用作临床筛查工具的结构有效性，并表明需要进一步研究来描述 PAVS 的特性。
