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| ID | Type | Description | Link |
|---|---|---|---|
| 2017/27/B/HS6/00092 | Other Grant/Funding Number | National Science Centre, Poland | |
| 2021/43/O/HS6/00712/ | Other Grant/Funding Number | National Science Centre, Poland |
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| Name | Class |
|---|---|
| National Science Centre, Poland | OTHER_GOV |
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This study would investigate the effects of forming action plans on a reduction of sedentary behaviors. Participants will be randomly assigned to either active control group (education on sedentary behaviors and physical activity) or the intervention group (forming action plans referring to replacing sedentary activities with physical activity. The effects of the intervention will be evaluated at the 2-month follow-up and at the 8-month follow-up.
The effects of three sessions (3 education sessions versus 3 education sessions+ forming plans to replace sedentary behavior with physical activity) will be investigated among participants from three age groups: adolescents (12-17 years old), adults (18-60 years old), and older adults (>60 years old). Compared to education only, forming plans about how to replace time spent on sedentary activities with physical activity is expected to result in a significantly larger change (a reduction) of sedentary time at the follow-up. Accelerometers will be used to evaluate short-term and mid-term changes in total sedentary time and the relative proportion of time spent on sedentary behavior vs light-intensity and moderate-to-vigorous- intensity physical activity.
Additionally, the study will observe changes in if the cognitions included in the Health Action Process Approach model (HAPA), such risk perception, self-efficacy, outcome expectancies, intention, action control, as well as changes in behavioral habit, presence of sedentary behavior cues in physical environment, and physical activity behavior. The observations will be conducted three times, at the baseline (before the intervention), the 2-month follow up, and at the 8-month follow-up.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Planning + Education | Experimental | 3 education sessions + 1 planning session (integrated into the 3rd education session); delivered face-to-face over 3 weeks (after the baseline measurement), individually. Planning: The planning materials and forms have sections: (a) instructions of what should be included in a good plan (the when, where, and how components), (b) formulating action and coping plans. Action plans (referring to when, when, and how the individual will act) as well as coping plans (referring to how to overcome potential difficulties) will be formed. After forming the plans individually, experimenters will discuss the plans with the participants. |
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| Education | Active Comparator | 3 education sessions; delivered face-to-face over 3 weeks (after the baseline measurement), individually. The education includes extended physical activity and sedentary behavior education using participant-educator discussions and printed materials. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Planning + Education | Behavioral | Planning: Participants will fill in the planning forms that efer to replacing sedentary behavior with physical activity. The following behavior change techniques are included in the planning intervention protocol: action planning, barrier identification, prompting self-talk, relapse prevention/coping planning. Applications of all behavior change techniques would include references to planning. |
| Measure | Description | Time Frame |
|---|---|---|
| Sedentary behavior | minutes of sedentary behavior per day assessed with ActiGraph wGT3X-BT accelerometer | change from the baseline sedentary behavior at 8 months |
| Measure | Description | Time Frame |
|---|---|---|
| The composition of waking time | the proportion of time spent on sedentary behavior (minutes per day) to time spent on light-intensity physical activity (minutes per day) and moderate-to-vigorous physical activity (minutes per day) assessed with ActiGraph wGT3X-BT accelerometer | change from the baseline composition of waking time at 8 months |
| Measure | Description | Time Frame |
|---|---|---|
| Sedentary behavior habit | Self-Reported Habit Scale; mean item score ranging from 1 to 4, higher scores indicate stronger sedentary behavior habit | change from the baseline sedentary behavior habit at 8 months |
| Self-efficacy for reducing sedentary behavior |
Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Aleksandra Luszczynska, PhD | Contact | +48694441765 | aluszczynska@swps.edu.pl | |
| Ewa Kulis, MA | Contact | +48723527172 | ekulis@swps.edu.pl |
| Name | Affiliation | Role |
|---|---|---|
| Aleksandra Luszczynska, PhD | SWPS University of Social Sciences and Humanities | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| SWPS University of Social Sciences and Humanities | Recruiting | Wroclaw | Lower Silezia | 53-328 | Poland |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 25207647 | Background | Gardner B. A review and analysis of the use of 'habit' in understanding, predicting and influencing health-related behaviour. Health Psychol Rev. 2015;9(3):277-95. doi: 10.1080/17437199.2013.876238. Epub 2014 Jan 21. | |
| Background | Schwarzer R, Luszczynska A. Health action process approach. In: Norman P, Conner M, editors. Predicting and changing health behavior. Maidenead, UK: McGraw-Hill; 2015. | ||
| 25886356 |
| Label | URL |
|---|---|
| Study protocol in Polish | View source |
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De-identified individual participant data for all primary, secondary, and additional outcome measures will be made available.
Respective data will be made available together with the submission of the manuscript reporting the findings for the main outcome (not later that within 2 years after the completion of data collection).
Data will be uploaded on Open Science Framework, available to researchers who will have a respective link.
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| ID | Term |
|---|---|
| D057185 | Sedentary Behavior |
| D009043 | Motor Activity |
| ID | Term |
|---|---|
| D001519 | Behavior |
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| ID | Term |
|---|---|
| D004522 | Educational Status |
| ID | Term |
|---|---|
| D012959 | Socioeconomic Factors |
| D011154 | Population Characteristics |
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Participants will be randomly assigned to an active control group (education on sedentary behavior and physical activity) or to a planning intervention (education on sedentary behavior and physical activity + education on how to form behavior change plans + forming a plan to change sedentary behavior using a planning sheet)
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| Education | Behavioral | The education would include extended sedentary behavior and physical activity education, delivered face-to-face by the experimenters. The education includes: (1) the behavioral guidelines, tailored to age and health status of the participants, (2) the examples of exercises and their metabolic equivalent, and (3) the education about ways to break sedentary behavior with active breaks. |
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| Physical activity |
minutes of light, moderate and vigorous intensity physical activity per day measured with ActiGraph wGT3X-BT accelerometer |
| change from the baseline physical activity at 8 months |
9 self-efficacy questionnaire items; mean item score ranging from 1 to 4, higher scores indicate stronger self-efficacy
| change from the baseline self-efficacy at 8 months |
| Risk perception | 3 questionnaire items to assess risk perception; mean item score ranging from 1 to 4, higher scores indicate higher risk perception | change from the baseline risk perception at 8 months |
| Outcome expectancies | 18 items assessing positive (9 items) and negative (9 items) outcome expectancies; item score ranging from 1 to 4, higher scores indicate more positive outcome expectancies | change from the baseline outcome expectancies at 8 months |
| Action control | 10 questionnaire items assessing action control; mean item score ranging from 1 to 4, higher scores indicate stronger action control | change from the baseline outcome expectancies at 8 months |
| Intention | 3 questionnaire items assessing intention to reduce sedentary behavior; mean item score ranging from 1 to 4, higher scores indicate stronger intention to reduce sedentary behavior | change from the baseline intention at 8 months |
| Self-reported planning | 4 questionnaire items assessing action planning; mean item score ranging from 1 to 4, higher scores indicate a higher level of self-reported planning | change from the baseline planning at 8 months |
| Environmental cues for sedentary behavior | 10 questionnaire items assessing physical environment cues for sedentary behavior and its reduction; the total sum score ranging from 0 to 10; higher scores indicate more environmental cues for sedentary behavior | change from the baseline planning at 8 months |
| Body mass index (BMI) | Certified and standardized body weight scales (Beurer; European Union safety certificate; measurement error < 5%) and measuring rods will be used. Body mass index will be calculated using the following formula: body weight [in kg] divided by a square of body height (in meters). Body weight will be recorded in kilograms and body height will be recorded in meters. | change from the baseline planning at 8 months |
| Background |
| Sallis JF, Spoon C, Cavill N, Engelberg JK, Gebel K, Parker M, Thornton CM, Lou D, Wilson AL, Cutter CL, Ding D. Co-benefits of designing communities for active living: an exploration of literature. Int J Behav Nutr Phys Act. 2015 Feb 28;12:30. doi: 10.1186/s12966-015-0188-2. |
| 26690644 | Background | Maher JP, Conroy DE. A dual-process model of older adults' sedentary behavior. Health Psychol. 2016 Mar;35(3):262-72. doi: 10.1037/hea0000300. Epub 2015 Dec 21. |
| 26048006 | Background | Keller C, Siegrist M. The weight management strategies inventory (WMSI). Development of a new measurement instrument, construct validation, and association with dieting success. Appetite. 2015 Sep;92:322-36. doi: 10.1016/j.appet.2015.05.037. Epub 2015 Jun 3. |
| 24229317 | Background | Berli C, Loretini P, Radtke T, Hornung R, Scholz U. Predicting physical activity in adolescents: the role of compensatory health beliefs within the Health Action Process Approach. Psychol Health. 2014;29(4):458-74. doi: 10.1080/08870446.2013.865028. Epub 2013 Dec 20. |
| 27410961 | Background | Luszczynska A, Hagger MS, Banik A, Horodyska K, Knoll N, Scholz U. Self-Efficacy, Planning, or a Combination of Both? A Longitudinal Experimental Study Comparing Effects of Three Interventions on Adolescents' Body Fat. PLoS One. 2016 Jul 13;11(7):e0159125. doi: 10.1371/journal.pone.0159125. eCollection 2016. |
| 39577821 | Derived | Krzywicka P, Kulis E, Szczuka Z, Siwa M, Banik A, Wietrzykowska D, Kornafel A, Zaleskiewicz H, Misiakowska J, Boberska M, Knoll N, Radtke T, Luszczynska A. Adding planning strategies to an experiential and conceptual knowledge-based intervention: Does it help to reduce sedentary time? Psychol Sport Exerc. 2025 Mar;77:102782. doi: 10.1016/j.psychsport.2024.102782. Epub 2024 Nov 20. |