Skip to main content
OpenTrials
Not Yet Recruiting

NCT Number: NCT07087457

The Effect of Transtheoretical Model-Based Exercise Interventions on Increasing Physical Activity in Office Workers

This study aims to evaluate the effect of human and digital stimulus exercise interventions based on the transtheoretical model on increasing physical activity levels in sedentary office workers. In the study, which is planned to be conducted with a randomized crossover design, participants will be randomly assigned to different intervention conditions (human and digital stimulus). Interventions will be structured in accordance with the behavior change stages of individuals and will be implemented over a certain period of time. Within the scope of the study, physiological indicators such as heart rate variability will be evaluated along with physical activity level. This study is aimed to contribute to the development of evidence-based intervention models to support the physical activity habits of individuals working in an office environment.

Translated with DeepL.com (free version)

Not Yet Recruiting

Trial opening soon.

Get Notified

Key information

Conditions

Office Workers Behavior Motor Activity Sedanter Sedentary Behavior

Age range

18 year–64 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

  • Office workers scoring <600 METdk/week according to the FAA survey Employees who agreed to participate in the study. Employees who are in reflection and preparation stages of TTM change.

Exclusion criteria

  • Part-time workers, Pregnant women, People with health problems that may increase the risk of walking (musculoskeletal system disorders, people with advanced heart failure diagnosis (based on self-report), rheumatologic, etc.) Workers who are in not thinking, moving and sustaining stages of TTM change.

Treatment and study plan

The digital stimulus command

Behavioral

The digital stimulus command: Providing information on the harms of inactivity and sedentary lifestyle on online, digital platforms. The individual will take the HRV measurement in a sitting position for 5 minutes every morning (before consuming tobacco products for smokers) as taught and will send the screenshot of the data to the researcher via WhatsApp. Ensuring that the digital stimulus commands that will remind the activity in line with TTM are followed by reminders sent to the computer screen or mobile phones. Taking a break from sitting when the command "It's time for activity" comes (taking a total of 6 breaks in the working hours of 08:30 - 17:30, 1 every 60 minutes recording the activity as "completed" in the digital diary and survey form) *Activities of office workers other than the time they spend sitting; Recording the number of steps and activities in the office, its surroundings and in daily life in a digital diary.

5 day 30-minute walking program

Behavioral

5 day 30-minute walking program. This group was also defined as the human stimulus group because, in addition to the digital stimulus command, they will be invited by the researcher and will participate in the walking program with the researcher. This group will first receive the activity program and simultaneously will also receive the digital stimulus command interventions.

Primary outcomes

  1. 1. Physical Activity Assessment

    Time frame: At baseline, in the washout period after intervention A (6th week) and after intervention B (11th week)

    International Physical Activity Questionnaire Short Form: The questionnaire consists of seven questions covering all types of physical activity. Physical activity levels are categorized as physically inactive, low physical activity, and adequate physical activity.

  2. Transtheoretic Model Scale for physical activity

    Time frame: At baseline, in the washout period after intervention A (6th week) and after intervention B (11th week)

    This scale has four dimensions.

    • Exercise Stages of Change: The scale consists of a single question with five options. Based on participants' responses, the exercise stage of change they are in is determined.
    • Exercise Change Processes: The scale consists of 28 items, 10 sub-dimensions, and two main processes (cognitive and behavioral). Cognitive processes include increased awareness, dramatic help/emotional revitalization, environmental reappraisal, self-reappraisal, and social liberation. Behavioral processes include contrast/opposition, helping relationships, reinforcement management, self-liberation, and stimulus control.
    • Exercise Self-Efficacy: This scale aims to assess an individual's strengths regarding exercise behavior.
    • Exercise Decision-Making Balance: Explains the cognitive factors and motivational factors that play a role in the decision-making process for the individual's exercise behavior.

Secondary outcomes

  1. Heart Rate Variability

    Time frame: At baseline, during the washout period after intervention A (week 6), and after intervention B (week 11)

    Heart Rate Variability is an important physiological indicator related to the interactions between the sympathetic and parasympathetic divisions of the autonomic nervous system. HRV, a control system used to regulate unconscious actions such as heart function, respiration, digestion, blood pressure, urination, and pupil dilation/contraction, is used to analyze the autonomic nervous system. In our study, we will use the Polar H10 Chest Strap, a widely used research tool, to determine HRV. In a validation study, linear HRV measurements obtained from the Polar H10 chest strap demonstrated strong agreement compared to ECG recordings.

Study contacts

Contact information is provided by the study sponsor or research team.

Sebahat GÖZÜM, Prof.Dr.

CONTACT

[email protected]

+902423106916

Sponsors and collaborators

Lead sponsor

Akdeniz University

Other

Registry information

Official study title

The Effect of Human and Digital Stimulus Exercise Interventions Based on the Transtheoretical Model on Increasing Physical Activity Levels in Sedentary Office Workers: A Randomized Crossover Study

Acronym: FIT-MOS

Important dates

Study start
2025
Primary completion
2025
Study completion
2026
First posted
Jul 28, 2025
Registry last updated
Jul 28, 2025

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.

Related clinical trials

Published trials that share one or more normalized conditions with this study.