Clinical trial NCT01855776: A Randomized Trial of Economic Incentives to Promote Walking Among Full Time Employees
Official title: A Randomized Trial of Economic Incentives to Promote Walking Among Full Time Employees
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Physical Activity
Keywords: Physical Activity/Walking
Full-time employees
RCT
Incentives
Wireless pedometer
Lead sponsor: Duke-NUS Graduate Medical School
Sponsor class: OTHER
Collaborators: name: Health Promotion Board, Singapore
First posted: 2013-05-16
Enrollment: 800
Sex: ALL
Minimum age (years): 21
Maximum age (years): 65
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: FACTORIAL

Brief summary: This study aims to assess the uptake, effectiveness, and cost-effectiveness of a scalable walking programme for full-time employees both with and without incentives.

Detailed description: The first part of this study comprises an in-home face-to-face survey with 950 full-time employees in Singapore. The survey aims to identify what an optimal programme might look like and to quantify the potential uptake of the programme, if offered. Stated preference conjoint analysis, which assesses individual preferences for attributes of specific programmes, will be used.

The second part of this study is a Randomised Controlled Trial (RCT) of a 12-month walking programme. Up to 800 full-time employees will be recruited and allocated to one of four research arms: Control Group, Programme Only Group, Cash Incentive Group and Charitable Incentive Group. Participants in the intervention arms will be asked to track their physical activities using Fitbit Zip, a wireless pedometer, which automatically uploads the data to a custom website. Those in the incentive arms will earn money or raise money for charities if they meet weekly exercise targets. Those in the control and Programme Only groups with receive a weekly payment for participation. Incentives and participation payment will be provided from months 1 - 6, after which they will be withdrawn.

The key outcome variable of the RCT is defined as bouts (in minutes) of moderate to vigorous physical activity ("MVPA bouts") as measured via accelerometry. Data will be collected at baseline and month 6 and 12 assessments.

Findings from the RCT will also be used to determine the cost to employers of implementing each programme and the incremental cost-effectiveness of the incentive programmes compared to the basic programme without incentives. The primary hypotheses are that the basic programme will have lower costs per person than the cash or charity programmes, but that the incentive programmes will be more cost-effective relative to the less expensive and less effective basic programme.

Eligibility criteria: Inclusion Criteria:

* Full-time employees living in Singapore
* Aged between 21-65

Exclusion Criteria:

* report difficulty doing 10 minutes of aerobic activities without stopping
* report difficulty walking up 10 stairs without stopping
* report difficulty performing basic activities of daily living
* have any medical conditions that limit their ability to walk as a means of physical activity
* self-identify medical conditions that limit ability to walk AND do not have medical consent
* answer 'YES' to any PAR-Q questions

Primary outcomes:
measure: Changes in MVPA (Moderate-to-Vigorous Physical Activity) bouts of participants from baseline to months 6 and 12
timeFrame: Baseline, 6 and 12 months
Secondary outcomes:
measure: Change in VO2Max of participants from baseline to months 6, and 12.
timeFrame: Baseline, 6 and 12 months
Other outcomes:
Locations:
city: Singapore
country: Singapore
facility: Duke-NUS Graduate Medical School
Study officials:
affiliation: Duke-NUS Graduate Medical School
name: Eric Finkelstein, Ph.D., M.H.A.
role: PRINCIPAL_INVESTIGATOR
References:
citation: Sloan RA, Kim Y, Sawada SS, Asakawa A, Blair SN, Finkelstein EA. Is Less Sedentary Behavior, More Physical Activity, or Higher Fitness Associated with Sleep Quality? A Cross-Sectional Study in Singapore. Int J Environ Res Public Health. 2020 Feb 19;17(4):1337. doi: 10.3390/ijerph17041337.
citation: Sloan RA, Kim Y, Sahasranaman A, Muller-Riemenschneider F, Biddle SJH, Finkelstein EA. The influence of a consumer-wearable activity tracker on sedentary time and prolonged sedentary bouts: secondary analysis of a randomized controlled trial. BMC Res Notes. 2018 Mar 22;11(1):189. doi: 10.1186/s13104-018-3306-9.
citation: Finkelstein EA, Haaland BA, Bilger M, Sahasranaman A, Sloan RA, Nang EEK, Evenson KR. Effectiveness of activity trackers with and without incentives to increase physical activity (TRIPPA): a randomised controlled trial. Lancet Diabetes Endocrinol. 2016 Dec;4(12):983-995. doi: 10.1016/S2213-8587(16)30284-4. Epub 2016 Oct 4.