A Tailored Feasibility Study to Increase Physical Activity and to Reduce Sedentary Time

March 8, 2019 updated by: University Medicine Greifswald
The purpose of this study was (i) to develop a brief counseling letter intervention aiming to reduce sedentary time and to increase physical activity during leisure time among adults aged 42 to 64 years and (ii) to provide information on the feasibility.

Study Overview

Status

Completed

Intervention / Treatment

Detailed Description

The study aimed to assess the feasibility of a brief counseling letter intervention to increase physical activity and to reduce sedentary time in leisure time.

Following the Intervention Mapping Protocol we developed the counseling letter intervention. The intervention is based on the Health Action Process Approach, comprising 3 tailored letters based on separate assessments, delivered over 6 month.

All participants consented (i) to participate in an examination at the university hospital including standardized measurements of blood pressure, waist and hip circumference, body height and weight as well as blood sample taking, (ii) to fill in a paper-pencil questionnaire, and (iii) to wear an accelerometer for 7 days at baseline and at 12-month follow-up.

A general population sample of cardiovascular healthy adults was randomly allocated to a control and an intervention group. At 5 time points (baseline, 3-month, 6-month, 7-month, and 12-month follow-up) participants of both study groups completed standardized questionnaires.

Study Type

Interventional

Enrollment (Actual)

176

Phase

  • Not Applicable

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

42 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • age between 42 and 65 years
  • resident in a pre-defined zip-code area

Exclusion Criteria:

  • cardiovascular event (myocardial infarction, stroke) or vascular intervention
  • self-reported body-mass-index over 35 kg/m²

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Other
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Counseling letter (intervention group)
Participants of the intervention group received a brief counseling letter intervention aiming to reduce sedentary time and to increase physical activity. The intervention comprised up to three tailored letters based on separate questionnaires.
The intervention is based on the Health Action Process Approach. The first letter provides information on knowledge regarding sedentary time and physical activity as well as intervenes on self-efficacy depending on the mindset of participants (non-intender, intender, actor). The second letter focuses on benefits and barriers of physical activity as well as the role of social support for physical activity. In case of actional stage, the third letter intervenes on self-efficacy again and suggests action and coping planning. Otherwise, the letter includes ipsative feedback according to the second letter.
Other Names:
  • Feasibility of brief counseling letter intervention
No Intervention: No counseling letter (control group)
Participants of the control group did not received the brief counseling letter intervention.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Adherence: Drop-out rates in control and intervention group
Time Frame: up to 12 month
Measures: Analyses of drop-out rates (%) in control and intervention group
up to 12 month

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Feasibility: Comprehensibility on intervention material via paper-pencil-assessment
Time Frame: 12 month
Measures: questions regarding the comprehensibility on intervention material (via paper-pencil-assessment)
12 month
physical activity by self-report
Time Frame: Change from Baseline Physical Activity at 12 months
Measures: paper-pencil-assessment (International Physical Activity Questionnaire-Long version, IPAQ-L)
Change from Baseline Physical Activity at 12 months
physical activity by accelerometry
Time Frame: Change from Baseline Physical Activity at 12 months
Measures: objective measurement of physical activity by accelerometry
Change from Baseline Physical Activity at 12 months
sedentary time by self-report
Time Frame: Change from Baseline Sedentary Time at 12 months
Measures: paper-pencil-assessment (last 7-d sedentary behavior questionnaire, SIT-Q-7d)
Change from Baseline Sedentary Time at 12 months
sedentary time by accelerometry
Time Frame: Change from Baseline Sedentary Time at 12 months
Measures: objective measurement of physical activity by accelerometry
Change from Baseline Sedentary Time at 12 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Study Chair: Sabina Ulbricht, Dr., Institute of Social Medicine and Prevention, University Medicine Greifswald, Greifswald, Germany

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

February 1, 2015

Primary Completion (Actual)

September 1, 2016

Study Completion (Actual)

September 1, 2016

Study Registration Dates

First Submitted

November 15, 2016

First Submitted That Met QC Criteria

December 7, 2016

First Posted (Estimate)

December 12, 2016

Study Record Updates

Last Update Posted (Actual)

March 12, 2019

Last Update Submitted That Met QC Criteria

March 8, 2019

Last Verified

March 1, 2019

More Information

Terms related to this study

Other Study ID Numbers

  • FKZ 81Z5400152

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

Undecided

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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