Structuring Financial Incentives to Increase Physical Activity
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 620
- 试验地点
- 1
- 主要终点
- Step count goal -- Intervention
研究概览
简要总结
The purpose of this study is to evaluate the effectiveness of different structures of long term financial incentives on increasing physical activity performed by subjects, as measured by the number of steps walked per day.
Investigators are interested in studying whether physical activity increases during an intervention period (with incentives) and a post-intervention period (with no incentives).
详细描述
The proposed study is a field experiment. Adults within the ages of 25 and 60 years of age, and with a body mass index of 22 or higher will be eligible to participate.
The study will consist of (1) a two-week baseline period, (2) a 36-week intervention period, and (3) a 12-week follow-up period.
At the beginning of the study, subjects will be given a wearable fitness device and their daily step count will be monitored for two weeks; this is the baseline period. After the two-week baseline period, the subjects will be randomly assigned to one of the five different conditions (Control, Gain, Loss, Gain Streak, or Loss Streak) and will be given the goal to increase their baseline step counts by 2,500 steps.
=====
HYPOTHESES -- Investigators expect the following:
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Other
- 盲法
- Double (Investigator, Outcomes Assessor)
入排标准
- 年龄范围
- 25 Years 至 60 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Singapore citizens and permanent residents
- •Adults with BMI greater than 22
- •Ownership of a smartphone or tablet
- •Only one member per household can participate in the study
排除标准
- •Women who are pregnant or breast feeding, or who intend to become pregnant over next year
- •Subjects who are already participating in another physical activity program or study
- •Subjects who are unable to participate for a total of 1 year
- •Subjects who are unwilling to wear the fitness device
- •Subjects who already walk more than 10,000 steps a day (self-reported per-day-average over seven days)
- •Subjects who have any of the following health conditions:
- •high blood pressure
- •high cholesterol
- •heart attack
- •heart failure
- •chronic obstructive pulmonary disease
- •kidney disease
- •diabetes (type 2)
研究组 & 干预措施
Control
Subjects in the Control treatment are not given any financial incentive to achieve the goal.
Gain Treatment
Financial Incentive: Each subject in the Gain treatment will earn a certain amount of money for each day the goal is achieved. The money earned will be added to a virtual account that the subject has, and will be paid to the subject at the end of the intervention period.
干预措施: Financial Incentive (Behavioral)
Loss Treatment
Financial Incentive: Each subject in the Loss treatment will be given a certain amount of money in his/her virtual account at the beginning of every week. For each day that the subject does not achieve the goal, a small portion of that money will be deducted from the virtual account. The balance that is left in the virtual account will be paid to the subject at the end of the intervention period.
干预措施: Financial Incentive (Behavioral)
Gain Streak Treatment
Financial Incentive: Each subject in the Gain Streak treatment get an increasing amount of money added to his/her virtual account for every continuous day that they achieve the goal. The maximum cumulative amount per week is same as in the other treatment conditions. The payment is reset at the beginning of each week, or if the subject misses the goal on any day. The money in the virtual account will be paid to the subject at the end of the intervention period.
干预措施: Financial Incentive (Behavioral)
Loss Streak Treatment
Financial Incentive: Each subject in the Loss Streak treatment will be given a certain amount of money in his/her virtual account at the beginning of every week. An increasing amount of money will be deducted for each consecutive day the subject does not achieve the goal. The payment is reset at the beginning of each week, or when the subject achieves the goal (i.e., deductions are reset when the streak is broken). The balance that is left in the virtual account will be paid to the subject at the end of the intervention period.
干预措施: Financial Incentive (Behavioral)
结局指标
主要结局
Step count goal -- Intervention
时间窗: 36-week intervention period following the baseline period.
Proportion of participant-days on which the goal (baseline +2,500 steps) was achieved during the intervention period.
Change in mean daily steps -- Intervention
时间窗: 36-week intervention period following the baseline period.
Change in mean daily steps during the intervention period.
次要结局
- Weight (in kilograms) Loss -- Intervention(36-week intervention period following the baseline period.)
- Weight (in kilograms) Loss -- Post-intervention(48-week period following the baseline period.)
- Step count goal -- Post-intervention(12-week post-intervention period.)
- Sleep Pattern -- Intervention(36-week intervention period following the baseline period.)
- Change in mean daily steps -- Post-intervention(12-week post-intervention period.)
- Sleep Pattern -- Post-intervention(12-week post-intervention period.)
- Change in Waist Measurement (in inches) -- Intervention(36-week intervention period following the baseline period)
- Change in Waist Measurement (in inches) -- Post-intervention(48-week period following the baseline period.)
研究者
Prof Ho Teck Hua
Professor
National University of Singapore