Good Intentions Study

The Impact of Multiple Behavior Change on the Effectiveness of Implementation Intentions to Promote Fitness Center Visitation

Status

Terminated

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT03498781

Enrollment

Registered

2018-04-17

Start date

2018-04-25

Completion date

2018-11-21

Last updated

2022-02-02

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Obesity, Overweight

Keywords

Exercise

Brief summary

The purpose of this study is to explore the effects of an intervention designed to help increase physical activity and decrease screen time.

Detailed description

The purpose of this study is to investigate attendance, exercise, and screen time habits in fitness center members. Because they are the population under investigation, recruitment will take place via the fitness center facilities. This population is under investigation because much of this population is sedentary and does not exercise at recommended levels, despite access to physical fitness facilities. This research will investigate methods to encourage physical activity in this population.

Interventions

OTHERExercise-only

Participants will write goals related to exercise, the most desired outcome of reaching their goals, anticipated obstacles/barriers which may prevent them from achieving their goals, and if-then statements proactively describing how to overcome or avoid obstacles.

OTHERControl

Participants will be asked to identify stress-reduction techniques which they can use in their daily lives and will be encouraged to practice them as necessary.

Study design

Allocation

RANDOMIZED

Intervention model

FACTORIAL

Primary purpose

OTHER

Masking

NONE

Intervention model description

This study will be a between group factorial design. The between subjects variable will be group assignment. The within subjects variable will be time.

Eligibility

Sex/Gender

ALL

Age

18 Years to 65 Years

Healthy volunteers

Yes

Inclusion criteria

* Body mass index from 18-45 kg/m2

Exclusion criteria

* have any medical conditions that prevent participant from safely taking part in physical activity * currently a smoker * are pregnant, breastfeeding, or plan to become pregnant * have visited fitness centers more than eight times in the past two months * exercise outside of fitness centers more than once a week for one hour at a time in the past month * do not engage in more than 14 hours a week of screen-based activities * do not have a primarily sedentary job

Design outcomes

Primary

Measure	Time frame	Description
Fitness center attendance	Week 0, 8, 16	Change in fitness center attendance as measured by number of visits per week

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026