NCT02907164

Brief Summary

The investigators are interested in using social norms to motivate people to sign up for a 100-day exercise challenge and exploring how to make social norms messages more effective.

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
15,000

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Sep 2016

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

September 1, 2016

Completed
2 days until next milestone

First Submitted

Initial submission to the registry

September 3, 2016

Completed
17 days until next milestone

First Posted

Study publicly available on registry

September 20, 2016

Completed
2 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2016

Completed
1 month until next milestone

Study Completion

Last participant's last visit for all outcomes

January 1, 2017

Completed
Last Updated

September 20, 2016

Status Verified

September 1, 2016

Enrollment Period

3 months

First QC Date

September 3, 2016

Last Update Submit

September 15, 2016

Conditions

Physical Activity

Outcome Measures

Primary Outcomes (2)

  • Percentage of people who sign up for the challenge

    Whether or not each person signs up for the challenge during the registration period

    During the registration period, 50 days

  • Activity level

    Number of steps taken each day, as recorded in participants' online portal

    Through study completion, 100 days

Secondary Outcomes (5)

  • Body Mass Index (BMI)

    Most recent BMI as entered by participant, an expected average of 2 months after study start

  • cholesterol

    Most recent cholesterol as entered by participant, an expected average of 2 months after study start

  • blood pressure

    Most recent blood pressure as entered by participant, an expected average of 2 months after study start

  • stress

    Most recent stress as entered by participant, an expected average of 2 months after study start

  • Email open and click rates

    Through study completion, 100 days

Study Arms (4)

Group 1: Control

ACTIVE COMPARATOR

People receive emails encouraging them to sign up for the challenge. The email does not mention the number of people who have signed up.

Behavioral: Email invitation

Group 2: Norm

EXPERIMENTAL

People receive emails encouraging them to sign up for the challenge. The email mentions the number of people who have signed up.

Behavioral: Email invitationBehavioral: Social norm

Group 3: Norm and health motive

EXPERIMENTAL

People receive emails encouraging them to sign up for the challenge. The email mentions the number of people who have signed up AND highlights that the challenge helps people to stay fit in a fun way.

Behavioral: Email invitationBehavioral: Social normBehavioral: Intrinsic, health motive

Group 4: Norm and reward motive

EXPERIMENTAL

People receive emails encouraging them to sign up for the challenge. The email mentions the number of people who have signed up AND highlights that the challenge helps people to stay active and earn rewards.

Behavioral: Email invitationBehavioral: Social normBehavioral: Extrinsic, reward motive

Interventions

Email invitationBEHAVIORAL

Receive emails encouraging them to sign up

Group 1: ControlGroup 2: NormGroup 3: Norm and health motiveGroup 4: Norm and reward motive
Social normBEHAVIORAL

Receive information about how many people have signed up

Group 2: NormGroup 3: Norm and health motiveGroup 4: Norm and reward motive
Intrinsic, health motiveBEHAVIORAL

Receive information about how the challenge helps people to stay fit in a fun way

Group 3: Norm and health motive
Extrinsic, reward motiveBEHAVIORAL

Receive information about how the challenge helps people to stay active and earn rewards

Group 4: Norm and reward motive

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • All benefits-eligible employees at partner university for whom the Human Resource office has an email address on record

You may not qualify if:

  • Employees who sign up for the challenge prior to the implementation of the interventions will NOT be included in the analysis.
  • (The interventions are implemented one week after the registration period has started. The partner university has to send invitation emails to all benefits-eligible employees with an email address on record, including those who already signed up. However, employees who already signed up cannot be affected by the interventions and thus will be excluded from the analysis.)

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Hengchen Dai

St Louis, Missouri, 63108, United States

Location

MeSH Terms

Conditions

Motor Activity

Condition Hierarchy (Ancestors)

Behavior

Study Officials

  • Hengchen Dai, Ph.D

    Washington University School of Medicine

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
PARTICIPANT
Purpose
SUPPORTIVE CARE
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Assistant Professor of Organizational Behavior

Study Record Dates

First Submitted

September 3, 2016

First Posted

September 20, 2016

Study Start

September 1, 2016

Primary Completion

December 1, 2016

Study Completion

January 1, 2017

Last Updated

September 20, 2016

Record last verified: 2016-09

Locations

US(1)