Interrupting Prolonged Sitting With ACTivity (InPACT) at Home Optimization Study

NCT ID: NCT06493214

Last Updated: 2025-11-21

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 38 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2024-08-20
• Study Completion Date: 2025-07-15

Brief Summary

Adherence refers to how well a person follows a recommended and agreed-upon course of action. Adherence is necessary for desired clinical outcomes and can include attending appointments, making lifestyle changes, and following home-based regimens for themselves or someone for whom they care for. Adherence to home exercise programs can be as low as 50%, directly impacting program effectiveness. There are many reasons why an individual may struggle to adhere, which may include perceived barriers such as not having enough time, reduced self-efficacy, the belief that the program is ineffective, or seeing early positive results so they then feel they do not need to continue with the program. For children, low skill level and lack of parental support are additional barriers to program adherence. A Sequential Multiple Assignment Randomized Trial (SMART) intervention is an intervention design that guides the adaptation of treatments over time. Adaptation refers to the use of dynamic information about a person (or family) to decide whether and how to intervene. SMART interventions are intended to address the unique and changing needs of individuals. The proposed study will examine the feasibility of using a 12-week (60-day) adaptive intervention design to optimize child adherence to a home exercise program. To advance equitable adherence to home exercise programs, there is a pressing need to develop strategies that support all children and families. The proposed study will provide new knowledge regarding the utility of adaptive interventions to optimize participation engagement in behavioral interventions in community contexts.

Detailed Description

Experimental protocol: In Stage 1 of the intervention, 30 child participants will enroll in a home exercise program called InPACT at Home. The objective is for each participant to complete three 8-minute exercise videos per day, five days a week (30-45 minutes total daily). Participants will receive a calendar with links to the daily videos on a private YouTube channel. The response rate will be evaluated at the end of week 4, consistent with the original InPACT at Home pilot feasibility trial timeframe. Participants who do not complete Stage 1 will still be eligible to participate in Stage 2, focusing on adherence. Stage 2 involves ten participants continuing with InPACT at Home, while the remaining 20 will be randomly assigned to additional support groups. These groups include daily text message reminders (pings) for ten participants and personalized activity calendars based on individual physical activity preferences for the other ten. The response rate will again be assessed at the end of week 8. In Stage 3, seven participants initially assigned to InPACT at Home + Pings will be randomly reassigned to receive further support through either Tailoring (Condition A) or Coaching (Condition B). Similarly, seven participants initially assigned to InPACT at Home + Tailoring will be re-randomized to receive additional support via either Pings (Condition D) or Coaching (Condition E). Seven participants initially receiving no support will be re-randomized to receive either Pings (Condition G) or Tailoring (Condition H). The primary objective of this pilot project is to assess the feasibility of the study design, ensuring that the response rate does not influence randomization. The study duration is 60 days.

Intervention Components: The InPACT at Home intervention consists of a structured calendar of activities and high-quality exercise videos. Additional supports include personalization of the activity calendar to individual preferences, daily text message reminders to parents, and coaching sessions aimed at overcoming household barriers to participation. Previous research has validated the feasibility of InPACT at Home, while other studies support the effectiveness of the chosen support mechanisms.

Measurements: Consented participants will undergo pre- and post-intervention assessments including physical activity enjoyment, habitual physical activity levels, anxiety and depression symptoms, emotion regulation, and parent support for physical activity. These measures will inform a larger SMART study evaluating the impact of InPACT at Home on child social-emotional health.

Measurement Tools:

• Physical Activity Enjoyment Scale: A validated questionnaire assessing enjoyment during physical activity.
• Physical Activity Questionnaire for Children (PAQ-C): Assesses pre- and post-intervention physical activity levels.
• Patient Health Questionnaire-9 (PHQ-9) and General Anxiety Disorder-7 (GAD-7): Measure depression and anxiety symptoms, respectively.
• Difficulties in Emotion Regulation Scale-Short Form: Evaluates emotion regulation abilities.
• Parental Support of Physical Activity Questionnaire: Assesses parental support for child physical activity.
• Ratings of Perceived Exertion Scale: Measures perceived exertion during exercise sessions using a 10-point scale.

Measurements taken during the Experimental Conditions:

Feasibility will be determined by attrition rates and adherence to the intervention. Attrition will track participants who drop out, while dose will monitor those completing at least 40 of the 60 exercise videos. Video completion will be recorded on activity calendars signed off by parents, and view duration will be assessed using YouTube analytics. Objective physical activity data will be collected using FitBit monitors worn during activity breaks.

Statistical Considerations: Sample size for this pilot study is based on current budgetary constraints (n=30). Data from this study will generate pilot data to calculate effect sizes for a larger trial examining adherence and program effectiveness.

Conditions

Adherence, Treatment; Physical Inactivity

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: SEQUENTIAL
• Primary Study Purpose: PREVENTION
• Blinding Strategy: NONE

Study Groups

Calendars + Pings + Coaching

Intervention is administered online (electronic calendars and text message pings) and virtually (coaching).

Group Type: EXPERIMENTAL

Physical activity

Intervention Type: BEHAVIORAL

Participants will be asked to complete three eight-minute InPACT at Home exercise videos per day, five days a week, for 12 weeks.

Calendars + Pings + Tailored Calendar

Intervention is administered online (electronic calendars and text message pings).

Group Type: EXPERIMENTAL

Physical activity

Intervention Type: BEHAVIORAL

Participants will be asked to complete three eight-minute InPACT at Home exercise videos per day, five days a week, for 12 weeks.

Calendars + Pings + Pings

Intervention is administered online (electronic calendars and text message pings).

Group Type: EXPERIMENTAL

Physical activity

Intervention Type: BEHAVIORAL

Participants will be asked to complete three eight-minute InPACT at Home exercise videos per day, five days a week, for 12 weeks.

Calendar + Tailored calendars + Pings

Intervention is administered online (electronic calendars and text message pings).

Group Type: EXPERIMENTAL

Physical activity

Intervention Type: BEHAVIORAL

Participants will be asked to complete three eight-minute InPACT at Home exercise videos per day, five days a week, for 12 weeks.

Calendar + Tailored calendars + Coaching

Intervention is administered online (electronic calendars) and virtually (coaching).

Group Type: EXPERIMENTAL

Physical activity

Intervention Type: BEHAVIORAL

Participants will be asked to complete three eight-minute InPACT at Home exercise videos per day, five days a week, for 12 weeks.

Calendar + Tailored calendars

Intervention is administered online (electronic calendars).

Group Type: EXPERIMENTAL

Physical activity

Intervention Type: BEHAVIORAL

Participants will be asked to complete three eight-minute InPACT at Home exercise videos per day, five days a week, for 12 weeks.

Calendars + Pings

Intervention is administered online (electronic calendars and text message pings).

Group Type: EXPERIMENTAL

Physical activity

Intervention Type: BEHAVIORAL

Participants will be asked to complete three eight-minute InPACT at Home exercise videos per day, five days a week, for 12 weeks.

Calendars + Tailored calendar

Intervention is administered online (electronic calendars).

Group Type: EXPERIMENTAL

Physical activity

Intervention Type: BEHAVIORAL

Participants will be asked to complete three eight-minute InPACT at Home exercise videos per day, five days a week, for 12 weeks.

Calendars

Intervention is administered online (electronic calendars).

Group Type: EXPERIMENTAL

Physical activity

Intervention Type: BEHAVIORAL

Participants will be asked to complete three eight-minute InPACT at Home exercise videos per day, five days a week, for 12 weeks.

Interventions

Physical activity

Participants will be asked to complete three eight-minute InPACT at Home exercise videos per day, five days a week, for 12 weeks.

Intervention Type: BEHAVIORAL

Eligibility Criteria

Inclusion Criteria

This study will include both males and females aged 8 to 12 years and their parent/guardian from various locations in Michigan. The investigators have chosen this age group because this is a critical age with physical activity participation declines (75% from the age of 9 to 15 years). To be included in the study, participants must:

1. Have access to a computer and internet at home.

2. Be proficient in English.

Exclusion Criteria

Children will not be eligible for the study if they meet any of the following conditions:

1. Currently taking medications (e.g., iron, metformin, chemotherapeutic agents) that could impact their ability to engage in physical activity.

2. Previously diagnosed with conditions that could impact their ability to engage in physical exercise (e.g., uncontrolled asthma).

3. Answering "YES" to any question on the Physical Activity Readiness Questionnaire (PAR-Q)22 indicating the participant has a heart condition, high BP, experienced chest pains or dizziness during daily activities, or require a doctor's recommendation for supervision during exercise.

4. Diagnosed with a physical or mental disability that would make it difficult to answer questions or follow directions without the help of an adult.

5. Parent or caregiver has a physical or mental disability that would make it difficult for them to answer questions or assist their child with project-related activities, such as completing questionnaires in the laboratory.

6. Potential participants who are ineligible will be told so on their screening call and will not be enrolled.

• Minimum Eligible Age: 8 Years
• Maximum Eligible Age: 12 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

University of Michigan

OTHER

Sponsor Role: lead

Responsible Party

Rebecca Hasson

Associate Professor

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Rebecca E Hasson, PhD

Role: PRINCIPAL_INVESTIGATOR

University of Michigan

Locations

University of Michigan

Ann Arbor, Michigan, United States

Countries

United States

Provided Documents

Document Type: Informed Consent Form: Informed Consent Form

View Document

Document Type: Informed Consent Form: Informed Assent Form

View Document

Other Identifiers

HUM00253411

Identifier Type: -

Identifier Source: org_study_id