The objective of this randomized control trial is to examine whether incentives-for-steps (i.e. $1 per day step count goals are reached) increase daily step counts among physically inactive hospital employees.
A 24-week, parallel arm, randomized control trial will be employed to examine the impact of incentives on physical activity among physically inactive Hamilton Health Science Corporation employees. Participants will be randomly allocated (1:1) into control (i.e. wellness program and accelerometer) or intervention groups (i.e. wellness program, accelerometer, incentives), where only intervention participants will receive reward points for completing daily step count goals. After randomization, a baseline 'run-in' assessment phase will occur one week prior to the study intervention (T0). During this 'run-in' period, participants will wear a Bluetooth enabled StepsCount Piezo accelerometer, which will track participants' daily steps and moderate to vigorous physical activity (MVPA), and synchronize their accelerometer (i.e. upload information) to the Change4Life program for seven days. Participants will also be asked to complete the Behavioural Regulation to Exercise Questionnaire (BREQ-3) and the Self-Efficacy for Exercise Scale. Throughout the 24-week study, all participants will be asked to wear the accelerometer and synchronize it to the Change4Life program daily. Date, steps per day, and bout minutes of MVPA per day (bouts include 10 or more continuous minutes of MVPA) will be collected when the accelerometer is synchronized. Daily synchronization from the accelerometer to the Change4Life program must be completed by 10 am the next morning. Participants will be instructed to increase their daily step counts by 1,000 and 2,000 steps above baseline (T0) over the course of the first six weeks of the study. On week 7, participants will be asked to increase daily steps per day to 3,000 over baseline, and maintain that level of activity for the duration of the study. Outcome measures will be assessed at baseline (T0), intervention end point (T2), and follow up (T3).
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
SINGLE
Enrollment
99
All participants have access to Change4Life, a web-based health education and behaviour change program. Individuals are rewarded with very modest incentives (uncertain chance; less than 1 in 100 chance of earning) when they complete learning modules or health tasks.
All participants will be asked to wear the StepsCount Piezo accelerometer, which tracks steps and bout minutes of MVPA per day, synchronize the device to the Change4Life program, and reach daily step count goals for 24 weeks.
During the first 12 weeks, participants will be eligible to earn $1 in vouchers (e.g., grocery, cinema) when daily goals are reached. The total amount available over the 3-month intervention period will be $90 (9,000 points). During weeks 13 to 24, participants will not receive daily reward points for completing step count goals.
Faculty of Kinesiology and Physical Education, University of Toronto
Toronto, Ontario, Canada
Steps
Steps per day will be objectively assessed using the Bluetooth enabled, medical grade, StepsCount Piezo accelerometer
Time frame: Daily for 24 weeks
10 Minute Bouts of Moderate to Vigorous Physical Activity
10 minutes bouts of moderate to vigorous physical activity per day will be objectively assessed using the Bluetooth enabled, medical grade, StepsCount Piezo accelerometer.
Time frame: Daily for 24 weeks
Motivation to Exercise - Behavioural Regulation to Exercise Questionnaire; BREQ-3
Participants will be asked to complete the Behavioural Regulation to Exercise Questionnaire (BREQ-3; Markland \& Tobin, 2004; Wilson et al., 2006), a 24-item questionnaire designed to measure self-determined motivation to exercise. This questionnaire will be administered online at baseline (T0; week 0), intervention end point (T2; week 12), and follow up assessments (T3; week 24).
Time frame: Baseline (T0; week 0), intervention end point (T2; week 12), and follow up assessments (T3; week 24).
Walking Self-Efficacy - Self-Efficacy for Exercise Scale; SEE Scale
Participants will be asked to complete a modified version of the Self-efficacy for Exercise (SEE) Scale (Resnick \& Jenkins, 2000), a 9-item questionnaire designed to measure self-reported confidence to exercise (i.e. walk). This questionnaire will be administered online at baseline (T0; week 0), intervention end point (T2; week 12), and follow up assessments (T3; week 24).
Time frame: Baseline (T0; week 0), intervention end point (T2; week 12), and follow up assessments (T3; week 24).
10 Minute Bouts of Moderate to Vigorous Physical Activity
Participants will also be asked to complete a modified version of the International Physical Activity Questionnaire - Short Form (IPAQ-SF), a six-item questionnaire designed to measure moderate and vigorous physical activity, as well as time spent walking (Booth, 2000; Craig et al., 2003). This questionnaire will be administered online at intervention end point (T2; week 12), and follow up assessments (T3; week 24).
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Time frame: Intervention end point (T2; week 12), and follow up assessments (T3; week 24).