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首页> 外文期刊>Preventive Medicine: An International Journal Devoted to Practice and Theory >Efficacy and feasibility of lowering playground density to promote physical activity and to discourage sedentary time during recess at preschool: A pilot study
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Efficacy and feasibility of lowering playground density to promote physical activity and to discourage sedentary time during recess at preschool: A pilot study

机译：降低游乐场密度以促进体育活动并减少学前班休假期间的久坐时间的功效和可行性：一项试点研究

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Objective: This pilot study examined if lowering playground density is feasible and effective in improving preschoolers' activity and sedentary levels during recess. Method: Between November and December 2011, a within-subject design was used to study preschoolers' activity via accelerometry during recesses in the usual conditions (baseline) and with lower playground density (intervention). During the intervention, preschools scheduled extra recesses so that the number of classes usually sharing the playground was halved. Effects were investigated, using two-level linear regression models, in 128 4- to 6-year-old children (69 boys) from 4 preschools in Ghent, Belgium. The four preschool principals filled in a questionnaire after the intervention. Results: At baseline, available play space was on average 7.4 (SD=1.7) m 2/child; during the intervention this increased to 16.7 (SD=5.1) m 2/child. The intervention was effective in decreasing sedentary time (-1min; -5.1%) and increasing light-to-vigorous (+1min; +5.1%) and moderate-to-vigorous physical activity (+0.8min; +4.8%) during recess. None found it difficult to implement the intervention. All agreed it was possible to use this strategy in the future. Conclusions: Although it was feasible to implement this intervention, improvements in preschoolers' activity levels were small. This intervention could especially be important for preschools with higher playground density.
机译：目的：这项前瞻性研究研究了降低游乐场密度是否在改善学龄前儿童活动和休息期间的久坐水平方面是否可行和有效。方法：在2011年11月至2011年12月之间，采用受试者内部设计，通过在正常情况下（基准线）和较低运动场密度（干预）的课间休息时间通过加速度计对学龄前儿童的活动进行研究。在干预过程中，学前班安排了额外的课余时间，使通常共享操场的班级数量减少了一半。使用两级线性回归模型，对比利时根特4所幼儿园的128名4至6岁儿童（69名男孩）进行了调查。干预后，四名学前校长填写了调查表。结果：在基线，可用的游戏空间平均为7.4（SD = 1.7）m 2 /儿童;在干预期间，这一比例增加到16.7（SD = 5.1）m 2 /儿童。干预有效地减少了休息期间的久坐时间（-1min; -5.1％）和增加轻度至健壮（+ 1min; + 5.1％）和中度至剧烈体育锻炼（+ 0.8min; + 4.8％） 。没有人发现很难实施干预措施。所有人都同意将来可以使用此策略。结论：尽管实施这种干预措施是可行的，但学龄前儿童的活动水平改善很小。这种干预对于游乐场密度较高的学龄前儿童尤其重要。

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