德国西南部小学生的久坐时间：时长及相关因素
Sedentary time among primary school children in south-west Germany: amounts and correlates.
作者信息
Hoffmann Belinda, Kettner Sarah, Wirt Tamara, Wartha Olivia, Hermeling Lina, Steinacker Jürgen M, Kobel Susanne
机构信息
Division of Sports- and Rehabilitation Medicine, Center of Medicine, Ulm University Hospital, Leimgrubenweg 14, 89075 Ulm, Germany.
出版信息
Arch Public Health. 2017 Oct 12;75:63. doi: 10.1186/s13690-017-0230-8. eCollection 2017.
BACKGROUND
Sedentary behaviour in children is related to different health consequences such as overweight and cardio-metabolic diseases that can track into adulthood. Previous studies have shown that children spend hours being sedentary, but no data of sedentary time (ST) among German children has been available, yet. Therefore, this study investigated objectively measured amounts and correlates of ST in a sample of German primary school children.
METHODS
Children's physical activity (PA) was objectively assessed for 6 days using a multi-sensor device (Actiheart®; CamNtech, Cambridge, UK). Activity levels were categorized on the basis of energy expenditure (MET) into sedentary, light PA (LPA), and moderate to vigorous PA (MVPA). ST excluding sleeping hours was assessed for 231 children (7.1 ± 0.6 years, male: 45.9%) and analysed for independent groups. Examined factors (parental education, household income, and migration background) were assessed by parental questionnaire. Children's weight, height and gender were collected in schools. Weight status was calculated on the basis of BMI percentiles.
RESULTS
On average, children spent 3.5 ± 1.5 h daily being sedentary, excluding sleeping hours. Significantly higher ST was found in girls ( = -4.6; < 0.01), in children with migration background ( = -6.9; < 0.01), at the weekend ( = -2.8; < 0.01), and among inactive children ( = 6.8; < 0.01). Additionally, significant correlations with ST in this sample were identified for MVPA (B = -0.99; [-1.09;-0.88], < 0.01), LPA (B = -0.89; [-0.97;-0.82], < 0.01), migration background (B = -17.64; [5.24;30.04], < 0.01), gender (B = -13.48; [-25.94;-1.01], < 0.05) and household income (B = -4.80; [-9.07; -0.53], < 0.05).
CONCLUSION
Girls, children with migration background, and inactive children were identified as potential risk groups. A higher income was associated with less ST. In general, ST was higher at the weekend. Furthermore, as PA was found to be negatively correlated to ST, these activities may replace each other. Therefore, these findings should be considered in future health interventions.
TRIAL REGISTRATION
German Clinical Trials Register (DRKS), DRKS-ID: DRKS00000494 DATE: 25/08/2010.
背景
儿童久坐行为与超重和心血管代谢疾病等不同的健康后果相关，这些问题可能持续到成年期。先前的研究表明，儿童会花数小时久坐，但目前尚无德国儿童久坐时间（ST）的数据。因此，本研究对德国小学生样本中客观测量的久坐时间量及其相关因素进行了调查。
方法
使用多传感器设备（Actiheart®；英国剑桥CamNtech公司）对231名儿童（7.1±0.6岁，男性占45.9%）的身体活动（PA）进行了6天的客观评估。根据能量消耗（MET）将活动水平分为久坐、轻度身体活动（LPA）和中度至剧烈身体活动（MVPA）。排除睡眠时间后，对231名儿童的久坐时间进行评估，并对独立组进行分析。通过家长问卷评估研究因素（父母教育程度、家庭收入和移民背景）。在学校收集儿童的体重、身高和性别信息。根据BMI百分位数计算体重状况。
结果
平均而言，儿童每天排除睡眠时间后久坐3.5±1.5小时。女孩（t = -4.6；P < 0.01）、有移民背景的儿童（t = -6.9；P < 0.01）、周末（t = -2.8；P < 0.01）以及不活跃儿童（t = 6.8；P < 0.01）的久坐时间显著更长。此外，在该样本中，久坐时间与MVPA（B = -0.99；[-1.09；-0.88]，P < 0.01）、LPA（B = -0.89；[-0.97；-0.82]，P < 0.01）、移民背景（B = -17.64；[5.24；30.04]，P < 0.01）、性别（B = -13.48；[-25.94；-1.01]，P < 0.05）和家庭收入（B = -4.80；[-9.07；-0.53]，P < 0.05）存在显著相关性。
结论
女孩、有移民背景的儿童和不活跃儿童被确定为潜在风险群体。较高收入与较少的久坐时间相关。总体而言，周末的久坐时间更高。此外，由于发现身体活动与久坐时间呈负相关，这些活动可能相互替代。因此，在未来的健康干预中应考虑这些发现。
试验注册
德国临床试验注册中心（DRKS），DRKS编号：DRKS00000494 日期：2010年8月25日
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