Department of Population Health and Disease Prevention, Program in Public Health, University of California, Irvine, Health Sciences/Public Health, Irvine, CA 92697-3957. Email:
Department of Statistics, University of California, Irvine.
Prev Chronic Dis. 2018 Aug 9;15:E101. doi: 10.5888/pcd15.170560.
Increases in physical activity can lead to decreases in the prevalence of chronic diseases. Parks provide an ideal setting for physical activity. We investigated the effect of a fitness equipment installation on the intensity of park users' physical activity at a community park.
We used the System for Observing Play and Recreation in a Community to record physical activity in Eastgate Park in Garden Grove, California, in August 2015 (preintervention [n = 1,650 person-periods]) and in February 2016 (postintervention [n = 1,776 person-periods]). We quantified physical activity in target areas of the park during 15-minute observation periods in 2 ways: 1) we categorized each user's activity level during the period (sedentary, walking, vigorous), and 2) we converted activity levels to numeric metabolic equivalent task (MET) scores and calculated the period-average score across users. We used mixed-effects regression models to assess 1) the proportional odds of higher activity level at postintervention and 2) the association between intervention status (pre vs post) and mean period-average MET scores.
In the immediate zone around the fitness equipment, the odds ratio for a higher activity level was 1.58 (95% confidence interval [CI], 1.14-2.18; P = .006) and the mean period-average MET score was 0.33 (95% CI, -0.07 to 0.74; P = .11) units higher at postintervention. Across the park as a whole, the odds ratio for a higher activity level was 1.41 (95% CI, 1.21-1.63; P < .001), and the mean period-average MET score was 0.34 (95% CI, 0.12-0.56; P = .003) units higher at postintervention.
Installing fitness zones appears to be an effective intervention for increasing physical activity of park users. Further studies need to be conducted to understand the sustained impact of fitness zones over time.
增加身体活动可以降低慢性病的患病率。公园为身体活动提供了理想的场所。我们研究了在社区公园安装健身器材对公园使用者身体活动强度的影响。
我们使用社区活动观察系统在加利福尼亚州花园格罗夫的伊斯特盖特公园（Eastgate Park）记录 2015 年 8 月（干预前[n=1650 人-期]）和 2016 年 2 月（干预后[n=1776 人-期]）的身体活动。我们以两种方式量化公园目标区域的身体活动：1）我们在 15 分钟的观察期内对每个用户的活动水平进行分类（久坐、散步、剧烈），2）我们将活动水平转换为数值代谢当量任务（MET）评分，并计算用户的平均期内评分。我们使用混合效应回归模型评估 1）干预后更高活动水平的比例优势，2）干预状态（干预前与干预后）与平均期内平均 MET 评分之间的关联。
在健身器材周围的直接区域，更高活动水平的比值比为 1.58（95%置信区间[CI]，1.14-2.18；P=0.006），干预后平均期内平均 MET 评分高 0.33（95%CI，-0.07 至 0.74；P=0.11）个单位。在整个公园范围内，更高活动水平的比值比为 1.41（95%CI，1.21-1.63；P<0.001），干预后平均期内平均 MET 评分高 0.34（95%CI，0.12-0.56；P=0.003）个单位。
安装健身区似乎是增加公园使用者身体活动的有效干预措施。需要进一步研究以了解健身区随时间推移的持续影响。
