PDF(Pubmed)
Abstract：
UNASSIGNED: Physical activity (PA) is associated with numerous health benefits. Vigorous PA (VPA) may have a greater impact on public health than lower-intensity PA. The incorporation of a specific recommendation on VPA could complement and improve existing recommendations for average daily moderate-vigorous PA (MVPA). Physical education classes could have a positive impact on children\'s adherence to average daily physical activity recommendations. The aim was to investigate the association between MVPA and VPA in children, as well as adherence to recommendations, and obesity and the presence of physical education classes.
UNASSIGNED: A cross-sectional study of physical activity was conducted in a sample of 8 and 9-year-old children in Andalusia (Spain). GENEActiv accelerometers were used, placed on the non-dominant wrist for at least eight consecutive days (24-h protocol). School days with and without physical education class, and weekend days were defined. ROC curves were used to calculate the threshold associated with obesity for average daily MVPA and VPA for recommendations.
UNASSIGNED: A total of 360 schoolchildren were included in the analyses (184 girls). An average of 7.7 (SD 1.4) valid days per participant were evaluated, with 19.9 (SD 10.5) and 11.4 (SD 5.1) minutes of VPA performed by boys and girls respectively. 25.8% of the participants were classified with central obesity. The optimal threshold determined with ROC analysis was 12.5 and 9.5 minutes of average daily VPA for boys and girls, respectively (RecVPA), and 75 minutes of average daily MVPA for both sexes (RecMVPA). The RecVPA showed stronger association with obesity. On school days with physical education class, compared to days without this class, children showed increased VPA and MVPA engagement and better compliance with recommendations, with smaller differences in adherence according to sex or obesity.
UNASSIGNED: On days with physical education class, more physical activity was accumulated at all intensities and greater adherence to the recommendations than on days without this class. VPA had a stronger correlation with the absence of obesity than lower-intensity activity. It was also observed that boys were physically more active and had higher adherence to the recommendations than girls.
UNASSIGNED: A cross-sectional study of physical activity was conducted in a sample of 8 and 9-year-old children in Andalusia (Spain). GENEActiv accelerometers were used, placed on the non-dominant wrist for at least eight consecutive days (24-h protocol). School days with and without physical education class, and weekend days were defined. ROC curves were used to calculate the threshold associated with obesity for average daily MVPA and VPA for recommendations.
UNASSIGNED: A total of 360 schoolchildren were included in the analyses (184 girls). An average of 7.7 (SD 1.4) valid days per participant were evaluated, with 19.9 (SD 10.5) and 11.4 (SD 5.1) minutes of VPA performed by boys and girls respectively. 25.8% of the participants were classified with central obesity. The optimal threshold determined with ROC analysis was 12.5 and 9.5 minutes of average daily VPA for boys and girls, respectively (RecVPA), and 75 minutes of average daily MVPA for both sexes (RecMVPA). The RecVPA showed stronger association with obesity. On school days with physical education class, compared to days without this class, children showed increased VPA and MVPA engagement and better compliance with recommendations, with smaller differences in adherence according to sex or obesity.
UNASSIGNED: On days with physical education class, more physical activity was accumulated at all intensities and greater adherence to the recommendations than on days without this class. VPA had a stronger correlation with the absence of obesity than lower-intensity activity. It was also observed that boys were physically more active and had higher adherence to the recommendations than girls.
摘要：
■体力活动（PA）与许多健康益处相关。活力PA（VPA）对公共卫生的影响可能比低强度PA更大。纳入关于VPA的具体建议可以补充和改进关于平均每日中等强度PA（MVPA）的现有建议。体育课可以对儿童坚持平均每日体育活动建议产生积极影响。目的是调查儿童MVPA和VPA之间的关联，以及对建议的坚持，肥胖和体育课的存在。
■在安达卢西亚（西班牙）的8岁和9岁儿童的样本中进行了身体活动的横断面研究。使用了GENEActiv加速度计，放置在非优势腕上至少连续八天（24小时方案）。有体育课和没有体育课的学校日子，定义了周末。ROC曲线用于计算平均每日MVPA和VPA的与肥胖相关的阈值以用于推荐。
■总共360名学童（184名女孩）被纳入分析。评估每位参与者平均7.7(SD1.4)有效天数，男孩和女孩分别进行19.9（SD10.5）和11.4（SD5.1）分钟的VPA。25.8%的参与者被归类为中心性肥胖。用ROC分析确定的最佳阈值是男孩和女孩的平均每日VPA的12.5和9.5分钟，分别(RecVPA)，和75分钟的平均每日MVPA（RecMVPA）。RecVPA显示与肥胖的相关性更强。在学校的体育课上，与没有这门课的日子相比，儿童表现出增加的VPA和MVPA参与和更好地遵守建议，根据性别或肥胖，依从性差异较小。
■在上体育课的日子里，在所有强度下积累了更多的体力活动，并且与没有此类课程的天数相比，对建议的依从性更高。与低强度活动相比，VPA与没有肥胖的相关性更强。还观察到，男孩的身体更加活跃，对建议的遵守程度高于女孩。
■在安达卢西亚（西班牙）的8岁和9岁儿童的样本中进行了身体活动的横断面研究。使用了GENEActiv加速度计，放置在非优势腕上至少连续八天（24小时方案）。有体育课和没有体育课的学校日子，定义了周末。ROC曲线用于计算平均每日MVPA和VPA的与肥胖相关的阈值以用于推荐。
■总共360名学童（184名女孩）被纳入分析。评估每位参与者平均7.7(SD1.4)有效天数，男孩和女孩分别进行19.9（SD10.5）和11.4（SD5.1）分钟的VPA。25.8%的参与者被归类为中心性肥胖。用ROC分析确定的最佳阈值是男孩和女孩的平均每日VPA的12.5和9.5分钟，分别(RecVPA)，和75分钟的平均每日MVPA（RecMVPA）。RecVPA显示与肥胖的相关性更强。在学校的体育课上，与没有这门课的日子相比，儿童表现出增加的VPA和MVPA参与和更好地遵守建议，根据性别或肥胖，依从性差异较小。
■在上体育课的日子里，在所有强度下积累了更多的体力活动，并且与没有此类课程的天数相比，对建议的依从性更高。与低强度活动相比，VPA与没有肥胖的相关性更强。还观察到，男孩的身体更加活跃，对建议的遵守程度高于女孩。
