Intervention Study on Increasing Physical Activity and Reducing Sedentary Behaviour of Vocational Students: Student Surveys, Body Composition Measurements and Accelerometer Data 2015-2017

The intervention study investigated the effectiveness of the 'Let's Move It' programme aiming to increase physical activity (PA) and reduce sedentary behaviour (SB) among students in vocational schools. It was conducted as a cluster-randomised parallel group trial. This dataset consists of 1) students' responses from four self-report surveys conducted over the study period, 2) accelerometer data on the students' moderate and vigorous physical activity (MVPA), sedentary time and breaks in sedentary time measured during three seven-day periods over the study period, 3) the students' body composition measurements made at the beginning and end of the study period, and 4) physical activity diary data. The main themes in the surveys were the students' PA habits and motivation, SB habits, well-being, health behaviour, health status, and personality. The research was funded by the Ministry of Education and Culture (OKM/81/626/2014) and the Ministry of Social Affairs and Health (201310238). Students were divided into control and intervention groups. The intervention group participated in a variety of measures, such as six Let's Move It group sessions and pause exercises. They also had a possibility to use gym balls and were provided with online material and a workbook. Teachers in the schools played an active role and data were also collected from them (see FSD3446). The four online questionnaire surveys mainly repeat the same questions. Health status was surveyed with questions on health issues, stress, smoking, eating and sleeping. Other questions charted the amount and kind of physical activity, motivation and barriers for taking exercise, measures taken for enhancing the PA motivation, future PA intentions, perceived PA impact, sedentary behaviour (sitting) and motivation for reducing SB. The surveys were conducted before the start of the programme (initial survey), and then three weeks, six weeks and 14 months after the start of the programme (intervention surveys). Accelerometer data on MVPA, sedentary time and breaks in sedentary time were collected through students wearing an accelerometer (3-axis Hookie AM 20) fixed to an elastic belt and placed on their hip for seven consecutive days during waking hours, except during shower and other water activities. There were three such seven-day periods: before the start of the programme, at the end of the programme and six months after the end of the programme. The students also filled in paper questionnaires daily (physical activity diaries) during those seven-day periods, specifying whether they were mainly at school, working or in practical training, or at home that day, whether they had any illnesses or injuries preventing physical activity or were engaged in water activities. Body composition measurements were made with TANITA bioimpedance measurement device (Tanita scale measurements) at two time points: before the start of the programme and six months after the end of the programme. The measurements include weight, height, body fat, body fat mass, body fat-free mass, body mass index (BMI), basal metabolic rate, total body water, bone mass, impedance, visceral fat, metabolic age, muscle mass, ECW, ICW, as well as specific measurements for torso and right and left legs and arms. Background variables included the respondent's gender, year of birth, study year, field of study, whether worked during studies, and parents' education.

本研究系一项干预性研究，旨在探讨旨在提升学生身体活动（PA）并减少久坐行为（SB）的“让我们动起来”（Let's Move It）项目的有效性。该研究采用集群随机平行分组试验的方式进行。本数据集包含以下内容：1）研究期间进行的四次自我报告调查的学生回答；2）研究期间测量的学生在三个连续七天期间的中等强度和剧烈身体活动（MVPA）、久坐时间和久坐时间中断的加速度计数据；3）研究开始和结束时进行的学生的身体成分测量；4）身体活动日记数据。调查的主要主题包括学生的身体活动习惯与动机、久坐行为习惯、福祉、健康行为、健康状况和个性。研究由教育部与文化部（OKM/81/626/2014）以及社会事务与健康部（201310238）资助。学生被分为对照组和干预组。干预组参与了多种措施，包括六次“让我们动起来”小组会议和暂停练习。他们还有机会使用健身球，并获得了在线材料和练习册。学校的教师发挥了积极作用，并从他们那里收集了数据（参见FSD3446）。四次在线问卷调查主要重复相同的问题。健康状况的调查通过关于健康问题、压力、吸烟、饮食和睡眠的问题进行。其他问题则记录了身体活动的数量和类型、锻炼的动机和障碍、增强身体活动动机的措施、未来的身体活动意图、感知的身体活动影响、久坐行为（坐着）以及减少久坐行为的动机。调查在项目开始之前（初始调查）以及项目开始后三周、六周和14个月进行（干预调查）。中等强度和剧烈身体活动、久坐时间和久坐时间中断的加速度计数据通过学生在清醒时间内佩戴固定在弹性腰带上的加速度计（3轴Hookie AM 20）收集，并将其放置在臀部，除洗澡和其他水上活动外，连续七天。共有三个这样的七天周期：项目开始前、项目结束时和项目结束后六个月。学生在那些七天期间每天填写纸质问卷（身体活动日记），具体说明他们那天主要在学校、工作或实习，或在家，是否患有任何影响身体活动的疾病或伤害，或是否参与了水上活动。身体成分测量使用TANITA生物电阻测量设备（Tanita scale measurements）在两个时间点进行：项目开始前和项目结束后六个月。测量包括体重、身高、体脂、体脂质量、去脂体质量、身体质量指数（BMI）、基础代谢率、总体水分、骨质量、阻抗、内脏脂肪、代谢年龄、肌肉质量、ECW、ICW，以及躯干、左右腿和手臂的特定测量。背景变量包括受访者的性别、出生年份、学习年份、研究领域、是否在学习期间工作，以及父母的受教育程度。