Formative Evaluation of a Home-based Physical Activity Intervention for Adolescent Girls - The HERizon Project: A Randomised Controlled Trial
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 42
- 试验地点
- 4
- 主要终点
- Physical activity
研究概览
简要总结
This mixed methods study was the feasibility phase of a broader intervention of research (The HERizon Project) that aims to develop a theory-based physical activity intervention targeting adolescent girls in the UK and Ireland. The design was a two-arm randomised controlled trial, comprising of (i) the HERizon six week remote intervention arm and (ii) a wait-list control arm. Block randomisation with country-level stratification was used to allocate the participants on entry. The primary outcome of the study was change in moderate to vigorous physical activity levels. Secondary outcomes included cardiorespiratory fitness, muscular strength and endurance, exercise motivation, perceived competence, self-esteem and body appreciation. Assessments were conducted pre-intervention (April/May, 2020) and repeated immediately post-intervention (June/July, 2020). As the study ran during the COVID-19 pandemic, all participants began the intervention in full national lockdowns, with all local schools and amenities being closed. Restriction began to be lifted in the last week of June in Ireland and in the first week of July in the UK, with some local amenities opening and small outside group gathering being permitted. Due to the nature of the study, participants and project deliverers could not be blinded to the assigned intervention.
详细描述
Design. This physical activity study will be evaluated using a two-arm randomised controlled trial with an intervention group and a wait-list control group. Assessments will be conducted at baseline and 6 weeks from baseline. Assessments will occur remotely in the participants' homes in April/May (baseline) and May/June (end point).
Recruitment. We aim to recruit 40 participants by convenience sampling through links with secondary school teachers, LJMU communications with staff and students, and via social media. The participant information sheet will be emailed to all potential participants. The email will ask potential participants to read the attached information sheet and they will be encouraged to ask the researchers questions. Participants will have up to one week to decide if they would like to participate in the study. Online consent forms will be used to obtain written informed consent for both the participant and their parent/ guardian. Participants will be given a link where they can sign the document online or they can sign a paper form and scan a copy back to the researcher. Participants will also be asked to provide verbal consent before any phone interviews and to tick a box confirming their consent before completing any questionnaires.
Randomisation. Using a computer-based randomisation tool, participants will be assigned to one of the two arms (intervention or wait list control). To make allocation more time efficient, randomisation will occur prior to baseline assessment. Once the follow up assessment has taken place for the intervention group, the wait-list control participants can begin the six-week physical activity programme.
Intervention. Due to the current COVID-19 pandemic, all aspects of this research project will be conducted virtually and adhere to the UK Government advice at the time the intervention begins. Assessments will be carried out as self-assessments by the participants in both the wait-list control and the intervention group in their own homes at two time points (week 0 and 6). The goals of this physical activity programme are to 1) inform participants of specific behaviours change skills related to adopting and maintaining a physically active life during and after the COVID-19 pandemic (e.g. self-monitoring, goal setting and overcoming challenges), and 2) increase adolescent girls' habitual physical activity (steps per day). To achieve these goals the following elements will be implemented:
- Exercise Sessions: Participants will be given the choice of different types of home-based virtual exercise videos, e.g. boxercise, dance classes, Pilates, bodyweight resistance exercise, Joe Wicks Body Coach YouTube channel, or design their own using a home-based exercise booklet with a choice of body weight exercises (booklet attached in appendix). Participants will be asked to complete 3 sessions of 30 minutes per week. The researcher will host an online group fitness class each week which participants are also invited to join. This option is to allow participants to engage in the social elements of physical activity but from the comfort of their own homes. It is also thought that having a scheduled set time to join a class may increase motivation and improve adherence, however this is optional. Participants will have the flexibility to choose whatever type of exercise suits their preferences and abilities. Using a printed or online template (participant preference), participants are asked to record what activity they did, the duration and a reflection of how they found the workout e.g. more motivated in the morning, burpees really difficult, enjoy a mix of aerobic and resistance training.
- Behaviour Change Calls: Weekly by phone call or video conference (at the preference of the participant e.g. Skype or Zoom) by a trained Prof Doc psychology candidate. Behaviour change support is based on self-determination principles (autonomy, competence and relatedness). Each call will be based on a pre-planned session outline and will be goal orientated, participant centred and focused on PA. Calls are expected to last 15-20 minutes per participant.
- No Reply SMS: Sent to the participant's mobile phone twice per week by a trained Prof Doc psychology candidate from an online messaging software (this option will be used as given the current situation researchers cannot access LJMU phones. This service is password protected and participants phone numbers will not be stored online). All messages will be standardised (not personally tailored) and will be focused on behaviour change techniques or reminders.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 13 Years 至 16 Years（Child）
- 性别
- Female
- 接受健康志愿者
- 是
入选标准
- •13-16 years
- •Living in the UK and Ireland
- •Ability to participate in moderate intensity physical activity according to the Physical Activity Readiness Questionnaire
排除标准
- •Currently pregnant
- •Severe psychological or neurological condition
- •No access to a phone or computer
结局指标
主要结局
Physical activity
时间窗: 6 weeks
Moderate to vigorous physical activity was assessed using the 8-item sub-scale World Health Organisation Health Behaviours of School Children questionnaire which has been validated with adolescents. This was used to collect self-reported physical activity over the previous seven-day period at baseline and post-intervention. Girls self-reported the estimated hours they spent engaging in physical activity before school, during school, after school and at weekends. The total hours spent in moderate to vigorous physical activity were then averaged across the week to find daily averages. The government guidelines are 60 minutes per day of physical activity on average across the week.
次要结局
- Muscular strength(6 weeks)
- Exercise motivation(6 weeks)
- Sedentary behaviour(6 weeks)
- Muscular endurance(6 weeks)
- Cardiorespiratory fitness(6 weeks)
- Body image(6 weeks)
- Daily step count(6 weeks)
- Competence(6 weeks)
- Self-esteem(6 weeks)