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Completed

NCT Number: NCT03539237

Closing the Gap Between Self-reported and Accelerometer-based Physical Activity

This study examines the effect of a video-based intensity level demonstration on self-reported physical activity in individuals aged between 40 and 75 years. Aim of the video demonstration is to achieve a better concordance of physical activity reports with accelerometer-based measurements.

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Key information

Conditions

Physical Activity Behavior Motor Activity

Age range

40 year–75 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Institute of Social Medicine and Prevention, University Medicine Greifswald

Greifswald, Germany

About this study

This study examines whether the demonstration of different intensity levels of physical activity by video in the context of a tablet PC (personal computer)-based survey can achieve a higher degree of concordance between self-reported and accelerometer-measured physical activity compared to an assessment without video demonstration. The recruitment of the study participants in the age range between 40 and 75 years takes place in a shopping center in the city Greifswald in Germany.

Informed consent consists of: (i) activity recording over 7 days using an accelerometer, (ii) completion of standardized questionnaires, (iii) participation in a standardized measurement of weight and height as well as waist and hip circumference.

Participants are asked to wear an accelerometer during the day for a period of 7 days. Subsequently, a questionnaire about the frequency, duration and intensity of physical activity in the last 7 days will be answered in the DZHK (Deutsches Zentrum für Herz-Kreislauf-Forschung)- examination center. Prior to the physical activity assessment the study participants are randomly assigned to the study conditions "Video" or "No Video" (ratio 1:1). Optionally, participants may receive feedback on their physical activity measured by accelerometer upon completion of the study.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

-

Exclusion criteria

  • cognitive impairment
  • inadequate language skills

Treatment and study plan

Video demonstration of physical activity intensity levels

Other

In the video demonstration, an approximately 50 year old male explains 1) light-intensity, 2) moderate-intensity, and 3) vigorous-intensity physical activity referring to differences in heart rate, breathing frequency and capability to talk normally. Simultaneously, on a treadmill he demonstrates the body signs of the three intensity levels. He gives examples and points out that there are individual differences in the intensity evaluation of comparable activities.

Primary outcomes

  1. Difference between physical activity measured by self-report and by accelerometry

    Time frame: The accelerometer is worn for 7 days and then the IPAQ-SF is retrospectively answered for these 7 days.

    Measures: assessement via tablet PC (International Physical Activity Questionnaire-Short Form, IPAQ-SF) and objective measurement by accelerometry

Sponsors and collaborators

Lead sponsor

University Medicine Greifswald

Other

Collaborators

  • Deutsches Zentrum für Herz-Kreislauf-Forschung (DZHK)

Registry information

Official study title

Effect of an Intensity Level Video Demonstration on the Gap Between Self-reported and Accelerometer-measured Physical Activity in Individuals Aged 40 to 75 Years

Acronym: GAP

Important dates

Study start
2018
Primary completion
2018
Study completion
2018
First posted
May 29, 2018
Registry last updated
Jan 4, 2019

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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