NCT03539237

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

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

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 379 (actual)
• Sponsor: University Medicine Greifswald · Academic / Other
• Sex: All
• Age: 40 Years – 75 Years
• Healthy volunteers: Accepted

Summary

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.

Detailed description

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.

Conditions

• Physical Activity

Interventions

Type	Name	Description
OTHER	Video demonstration of physical activity intensity levels	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.

Timeline

• Start date: 2018-05-23
• Primary completion: 2018-11-28
• Completion: 2018-11-28
• First posted: 2018-05-29
• Last updated: 2019-01-04

Locations

1 site across 1 country: Germany