Enduring Exercise Habits: Trending Norms

• ClinicalTrials.gov Identifier: NCT03627871
• Recruitment Status: Completed
• First Posted: August 14, 2018
• Last Update Posted: June 11, 2020
• Sponsor: University of Pennsylvania
• Information provided by (Responsible Party): University of Pennsylvania

Study Description

Brief Summary:

Learning that most people engage in an activity can be a powerful motivator to adoption. But are there instances in which people can similarly find motivation from learning that only a minority of others engage in a behavior? Evidence suggests this may be possible when the message is that the size of the minority has been growing in recent years. In this study, we first examine how gym members' exercise patterns shift when they are informed that the minority versus the majority of (a subpopulation of) other Americans exercise frequently. We also test how gym members are affected by learning that the number of frequent exercisers has increased in recent years.

Condition or disease	Intervention/treatment	Phase
Healthy	Behavioral: Majority Norm; Behavioral: Trending Minority Norm; Behavioral: Minority Norm; Behavioral: Control; Behavioral: Trending Majority Norm	Not Applicable

Detailed Description:

Gym members register online to participate in a 28-day workout program. Upon registration, participants are assigned to one of five conditions (a 2 x 2 study design plus a control group). Participants are assigned to receive information about majority exercise norms or minority exercise norms, and are informed that these norms are trending up or receive no information about trends in these norms. Participants are then prompted to create a workout schedule. Over the 28-day intervention period, participants are sent text messages with information about exercise depending on their condition (i.e., majority trending exercise norms, majority exercise norms with no information about trends, minority trending exercise norms or minority norms with no information about trends), workout reminders before their scheduled workouts, and weekly emails with additional exercise information related to their assigned condition and their schedule. Participants assigned to the control condition are prompted to create a workout schedule and receive text message reminders, information about exercise that is unrelated to social norms, and weekly emails with exercise information unrelated to social norms or trends and their workout schedule. All participants earn points for participating and for each day that they go to the gym which can be redeemed for an Amazon cash gift card after the end of the intervention period.

Study Design

• Study Type: Interventional (Clinical Trial)
• Actual Enrollment: 2000 participants
• Allocation: Randomized
• Intervention Model: Parallel Assignment
• Masking: None (Open Label)
• Primary Purpose: Supportive Care
• Official Title: Enduring Exercise Habits: Trending Norms
• Actual Study Start Date: January 31, 2018
• Actual Primary Completion Date: February 28, 2019
• Actual Study Completion Date: February 28, 2019

Arms and Interventions

Arm	Intervention/treatment
Experimental: Trending majority norm; Participants receive information about exercise-related norms that apply to the majority of the population and are told this norm has been increasing recently.	Behavioral: Trending Majority Norm; Participants receive information about exercise norms that apply to the majority of the population and have recently been trending up.
Experimental: Non-trending majority norm; Participants receive information about exercise-related norms that apply to the majority of the population but are not told about recent trends.	Behavioral: Majority Norm; Participants receive information about exercise norms that apply to the majority of the population but are given no information about trends in this norm.
Experimental: Trending minority norm; Participants receive information about exercise-related norms that apply to a minority of the population and are told this norm has been increasing recently	Behavioral: Trending Minority Norm; Participants receive information about exercise norms that apply to the minority of the population and have recently been trending up.
Experimental: Non-trending minority norm; Participants receive information about exercise-related norms that apply to a minority of the population but are not told about recent trends.	Behavioral: Minority Norm; Participants receive information about exercise norms that apply to the minority of the population but are given no information about trends in this norm.
Experimental: Control; Participants receive information about exercise unrelated to social norms or recent trends.	Behavioral: Control; Participants receive information about exercise that is unrelated to social norms or trends in social norms.

Outcome Measures

Primary Outcome Measures :

1. Gym visits per week [ Time Frame: During the 28-day intervention period ]
   Number of times the participant goes to the gym
2. Gym visits per week [ Time Frame: During the 4-weeks post-intervention ]
   Number of times the participant goes to the gym
3. Gym visits per week [ Time Frame: During the 10-weeks post-intervention ]
   Number of times the participant goes to the gym
4. Whether or not a participant visits the gym in a given week [ Time Frame: During the 28-day intervention period ]
   Binary variable capturing whether or not a participant had any gym visits in a given week
5. Whether or not a participant visits the gym in a given week [ Time Frame: During the 4-weeks post-intervention ]
   Binary variable capturing whether or not a participant had any gym visits in a given week
6. Whether or not a participant visits the gym in a given week [ Time Frame: During the 10-weeks post-intervention ]
   Binary variable capturing whether or not a participant had any gym visits in a given week

Secondary Outcome Measures :

1. Gym visits per week [ Time Frame: During the 52-weeks post-intervention ]
   Number of times the participant goes to the gym
2. Whether or not a participant visits the gym in a given week [ Time Frame: During the 52-weeks post-intervention ]
   Binary variable capturing whether or not a participant had any gym visits in a given week

Eligibility Criteria

• Ages Eligible for Study: 18 Years and older (Adult, Older Adult)
• Sexes Eligible for Study: All
• Accepts Healthy Volunteers: Yes

Criteria

Inclusion Criteria:

• Has 24 Hour Fitness gym membership

Exclusion Criteria:

-

Contacts and Locations

Locations

United States, Pennsylvania

University of Pennsylvania

Philadelphia, Pennsylvania, United States, 19104

Sponsors and Collaborators

University of Pennsylvania

More Information

• Responsible Party: University of Pennsylvania
• ClinicalTrials.gov Identifier: NCT03627871
• Other Study ID Numbers: 827107-1237
• First Posted: August 14, 2018
• Last Update Posted: June 11, 2020
• Last Verified: June 2020

Individual Participant Data (IPD) Sharing Statement:

• Plan to Share IPD: No

• Studies a U.S. FDA-regulated Drug Product: No
• Studies a U.S. FDA-regulated Device Product: No

Keywords provided by University of Pennsylvania:

exercise; social norms; interest in exercising more