Rodríguez-Gutiérrez Eva, Torres-Costoso Ana, Jiménez-López Estela, Mesas Arthur Eumann, Díaz-Goñi Valentina, Guzmán-Pavón María José, Beneit Nuria, Martínez-Vizcaíno Vicente
Health and Social Research Center, Universidad de Castilla-La Mancha, 16071 Cuenca, Spain.
Research Network on Chronicity, Primary Care and Health Promotion (RICAPPS), 16071 Cuenca, Spain.
J Clin Med. 2024 Dec 17;13(24):7679. doi: 10.3390/jcm13247679.
: To examine the associations between gradients of average daily temperature and sunlight hours with daily steps over a 35-week period in school-aged children and to evaluate whether there were differences by sex. : We conducted a follow-up study involving 655 children (50.8% girls, mean age 10.45 ± 0.95 years) from six public primary schools in Cuenca, Spain. We measured daily steps using Xiaomi Mi Band 3 Smart Bracelets (Xiaomi Corporation, Beijing, China) from October 2022 to June 2023 (over 35 weeks). We collected the average daily temperature from the local weather station in Cuenca and the sunlight hours during the same period. We used ANCOVA models and LOESS regression to examine the associations between gradients of average daily temperature and daily hours of sunlight with daily steps. Additionally, we performed a multiple linear regression model. : Our findings revealed significant variations in daily steps across the 35 weeks. The relationship between environmental factors and daily steps was non-linear in both girls and boys. The optimal values for higher activity levels were an average temperature of 14 °C and 13 h of sunlight. Furthermore, a 1 °C increase in temperature was associated with an increase of 74 ± 130 steps/day, while an increase of one hour of sunlight was associated with an increase of 315 ± 237 steps/day. However, the sunlight hours may act as a moderating factor. : Our study showed a non-linear association between average daily temperature and the sunlight hours with daily steps over a 35-week period. Appropriate strategies may be needed to promote physical activity during periods of extreme temperatures or sunlight exposure.
研究学龄儿童在35周内平均每日气温和日照时长梯度与每日步数之间的关联，并评估性别差异。
我们对西班牙昆卡市六所公立小学的655名儿童（50.8%为女孩，平均年龄10.45±0.95岁）进行了一项随访研究。2022年10月至2023年6月（共35周），我们使用小米手环3智能手环（小米公司，中国北京）测量每日步数。我们收集了昆卡当地气象站的平均每日气温以及同一时期的日照时长。我们使用协方差分析模型和局部加权回归来研究平均每日气温梯度和日照时长与每日步数之间的关联。此外，我们还进行了多元线性回归模型分析。
我们的研究结果显示，在这35周内每日步数存在显著差异。女孩和男孩的环境因素与每日步数之间的关系均为非线性。较高活动水平的最佳值是平均温度14°C和日照时长13小时。此外，温度每升高1°C，每日步数增加74±130步，而日照时长每增加1小时，每日步数增加315±237步。然而，日照时长可能起到调节作用。
我们的研究表明，在35周内平均每日气温和日照时长与每日步数之间存在非线性关联。在极端温度或日照暴露期间，可能需要采取适当策略来促进身体活动。
