Effects of an Active Choice Intervention on Physical Activity Intentions and Behaviour Among Physically Inactive Adults: A Four-Arm Web-Based Experiment
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 564
- 试验地点
- 1
- 主要终点
- Intention
研究概览
简要总结
This web-based experimental study aims to ascertain whether promoting an active (i.e. conscious and autonomous) choice process about physical activity results in better behavioural outcomes (e.g. physical activity) and psychological outcomes (e.g. physical activity intention) compared to promoting a passive choice process in physically inactive adults.
详细描述
In this web-based experimental study, the investigators will use a pre-test post-test four-arm parallel design to compare the effect of promoting an active choice process versus a passive choice process about physical activity on behavioural outcomes (e.g. physical activity behaviour, perceived increase in physical activity) and psychological outcomes (e.g. physical activity intention, commitment) among physically inactive adults.
Participants will be randomized to one of four groups. Participants in group GA+ will be encouraged to make a very active choice by weighing advantages and disadvantages of physical activity, considering personal values, identifying barriers and engaging in action and coping planning. The intervention for group GA is similar, but lacks the action and coping planning exercises. In the other two groups, a passive choice process will be promoted by only providing information: Group G will read the national physical activity guideline and group GI will read the guideline and information about possible advantages and disadvantages and barriers to physical activity. Behavioural and psychological outcomes will be assessed at the first measurement and follow-up measurement. Regression analyses will be performed to examine intergroup differences. In addition, sensitivity analyses and a process evaluation will be performed.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Basic Science
- 盲法
- Single (Participant)
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Low levels of physical activity (i.e. physically active for at least 30 minutes on <5 days a week and engaging in <150 minutes of physical activity in total throughout an average week)
排除标准
- •Pregnancy
- •Wheelchair user
- •Not being able to walk a minimum of 100 meters
研究组 & 干预措施
Guideline + Active Choice (GA)
Participants received a web-based intervention consisting of information (including the national physical activity guideline) and several assignments. Assignments included: completing a decision balance sheet; indicating the importance of personal values and the time, effort and energy spent on these personal values; identifying barriers to physical activity.
干预措施: Guideline + Active Choice (GA) (Behavioral)
Guideline + Information (GI)
Participants received the national physical activity guideline, and information about pros and cons of physical activity, and possible barriers to physical activity.
干预措施: Guideline + information (GI) (Behavioral)
Guideline (G)
Comparison arm. Participants received the national physical activity guideline.
干预措施: Guideline (G) (Behavioral)
Guideline + Active Choice + action&coping planning (GA+)
Participants received a web-based intervention consisting of information (including the national physical activity guideline) and several assignments. Assignments included: completing a decision balance sheet; indicating the importance of personal values and the time, effort and energy spent on these personal values; action planning; identifying barriers to physical activity; coping planning.
干预措施: Guideline + Active Choice + action&coping planning (GA+) (Behavioral)
结局指标
主要结局
Intention
时间窗: Directly after the intervention (Day 0)
Intention to become more physically active (yes/no), assessed by a questionnaire
Physical activity
时间窗: Change from baseline at approximately 18 days
Physical activity levels (MET minutes per week), assessed by the short form of the International Physical Activity Questionnaire (IPAQ)
次要结局
- Satisfaction about one's plan(Directly after the intervention (Day 0))
- Perceived change in physical activity compared to baseline(Change from baseline at approximately 18 days)
- Intention strength(Change from day 0, at approximately 18 days)
- Active choice(Directly after the intervention (Day 0))
- Perceived advantages and disadvantages of physical activity(During intervention (Day 0))
- Perceived barriers to physical activity(During intervention (Day 0))
- Plans to cope with perceived barriers(During intervention (Day 0))
- Self-efficacy(Change from day 0, at approximately 18 days follow-up)
- Value of health(During intervention (Day 0))
- Alignment of choice with personal values(Directly after the intervention (Day 0))
- Plans to change physical activity(During intervention (Day 0))
- Factors supporting physical activity(Follow-up; approximately 18 days after the intervention (day 0))
- Barriers to physical activity(Follow-up; approximately 18 days after the intervention (day 0))
- Sitting time(Change from baseline at approximately 18 days)
- Autonomous choice(Directly after the intervention (Day 0))
- Commitment(Change from day 0, at approximately 18 days follow-up)
- Values influencing physical activity(During intervention (Day 0))
- Commitment(Directly after the intervention (Day 0))
- Self-efficacy(Directly after the intervention (Day 0))
研究者
Lorraine Landais
Principal Investigator
Amsterdam UMC, location VUmc