Husu Pauliina, Vähä-Ypyä Henri, Vasankari Tommi
The UKK Institute for Health Promotion Research, Tampere, Finland.
BMC Public Health. 2016 Apr 16;16:338. doi: 10.1186/s12889-016-3006-0.
Regular physical activity (PA) forms the basis for healthy growth and development. High volume of sedentary behavior (SB) on the other hand is harmful for health. The purpose of the study was to describe objectively measured PA and SB in Finnish school children. Furthermore, the study aimed at analyzing the association between PA, SB and perceived health status.
The participants of this cross-sectional study were 7- to 14-year-old girls and boys (n = 1029), whose PA and SB during waking hours were measured with Hookie AM 20-accelerometer (Traxmeet Ltd, Espoo, Finland) for seven days. Perceived health status was assessed by a questionnaire. Association between PA, SB and health status was analyzed by logistic regression analysis using SPSS (Inc, Chicago IL).
Participants (age 10.3 ± 1.9, 52 % girls) with sufficient accelerometer data (at least 4 days with ≥ 10 h/day) were included into the study (n = 851, 88 %). The average measurement time was 13 h 27 min per day. Participants spent on average 54 % (7 h 18 min) of waking hours sedentary, mainly sitting. They stood still on average 9 % of the time (1 h 15 min). Light PA covered on average 18 % (2 h 24 min) and moderate-to-vigorous PA 19 % (2 h 30 min). Younger participants and boys were more active than the older ones and girls. Most (63 %) of the participants perceived their health status as excellent. In an adjusted logistic regression analysis greater sedentary time decreased the odds for excellent perceived health status (p = 0.001). In contrast higher number of steps per day (p = 0.019) increased the odds.
Participants spent over half of their waking hours sedentary. Less SB and more steps were associated with excellent perceived health. There is a need for dose-response analyses between objectively measured PA and SB and specific health outcomes in children and adolescents. Also patterns of objectively measured PA and SB should be studied in more detail.
规律的体育活动（PA）是健康成长和发育的基础。另一方面，大量的久坐行为（SB）对健康有害。本研究的目的是描述芬兰学童客观测量的体育活动和久坐行为。此外，该研究旨在分析体育活动、久坐行为与感知健康状况之间的关联。
这项横断面研究的参与者为7至14岁的女孩和男孩（n = 1029），他们清醒时的体育活动和久坐行为通过Hookie AM 20加速度计（芬兰埃斯波的Traxmeet有限公司）测量7天。感知健康状况通过问卷调查进行评估。使用SPSS（美国伊利诺伊州芝加哥的SPSS公司）通过逻辑回归分析来分析体育活动、久坐行为与健康状况之间的关联。
有足够加速度计数据（至少4天，每天≥10小时）的参与者（年龄10.3±1.9岁，52%为女孩）被纳入研究（n = 851，88%）。平均测量时间为每天13小时27分钟。参与者清醒时平均有54%（7小时18分钟）的时间处于久坐状态，主要是坐着。他们平均有9%的时间（1小时15分钟）静止站立。轻度体育活动平均占18%（2小时24分钟），中度至剧烈体育活动占19%（2小时30分钟）。较年轻的参与者和男孩比年长的参与者和女孩更活跃。大多数（63%）参与者认为他们的健康状况极佳。在调整后的逻辑回归分析中，更长的久坐时间降低了感知健康状况极佳的几率（p = 0.001）。相反，每天步数更多（p = 0.019）则增加了几率。
参与者清醒时超过一半的时间处于久坐状态。更少的久坐行为和更多的步数与极佳的感知健康状况相关。需要对儿童和青少年中客观测量的体育活动和久坐行为与特定健康结果之间进行剂量反应分析。此外，应更详细地研究客观测量的体育活动和久坐行为模式。
