Obesity, Overweight
Conditions
Brief summary
The purpose of this study is to conduct a randomized controlled trial to compare the weight losses produced by the Weight Watchers Online program (WWO) and WWO plus the Philips ActiveLink physical activity system, over a 1-year period, compared to a control group.
Interventions
BEHAVIORALWeight Watchers Online Program
Access to the Weight Watchers Online program available via the Internet on personal computers, tablet computers, and smartphones.
DEVICEPhilips ActiveLink
Provision of a key-chain sized physical activity monitor that interfaces with the Weight Watchers website to promote exercise and give feedback on progress towards exercise goals.
BEHAVIORALEating and Activity Newsletter
General information on healthy eating and physical activity habits and the medical consequences of overweight/obesity and weight loss.
Sponsors
WW International Inc
University of Tennessee
The Miriam Hospital
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Investigator)
Eligibility
Sex/Gender
ALL
Age
18 Years to 70 Years
Healthy volunteers
No
Inclusion criteria
* Body mass index (BMI) between 27 and 40 kg/m2 * All ethnic groups will be recruited * English speaking * Have access to the Internet via a computer, and basic computer skills
Exclusion criteria
* Report health problems that make weight loss or unsupervised exercise unsafe or unreasonable * Report a heart condition, chest pain during periods of activity or rest, or loss of consciousness on the Physical Activity Readiness Questionnaire * Are currently pregnant or breastfeeding, or intend to become pregnant in the next 12 months * Are planning to move outside of the state within the next 12 months * Report any cognitive or physical limitations that preclude use of a personal computer * Have participated in a study conducted by the WCDRC or UT in the past 2 years * Have followed a commercial weight-loss program within the previous 6 months or who are currently following a commercial weight loss program * Weight loss of ≥ 5% of initial body weight in the last 6 months * History of clinically diagnosed eating disorder excluding Binge Eating Disorder. * Previous surgical procedure for weight loss * Currently taking weight loss medication * Treatment of cancer within the last 6 months
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Change in body weight, measured in kilograms | 3, 6, 9, and 12 months after randomizaiton |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Engagement with the electronic intervention system | 3, 6, 9, and 12 months after randomization | The frequency with with participants interact with the Weight Watchers Online and control group websites. |
| Blood pressure | 3, 6, 9, and 12 months after randomization | — |
Countries
United States
Outcome results
None listed