Sedentary Behavior
Conditions
Keywords
Planning, Physical Activity
Brief summary
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.
Detailed description
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.
Interventions
BEHAVIORALPlanning + Education
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.
BEHAVIORALEducation
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.
Sponsors
National Science Centre, Poland
University of Social Sciences and Humanities, Warsaw
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
SINGLE (Subject)
Intervention model description
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)
Eligibility
Sex/Gender
ALL
Age
12 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* not meeting physical activity guidelines proposed by the World Health Organization
Exclusion criteria
* any existing diseases with contraindications for moderate intensity physical activity, confirmed by patient's primary care physician or a specialist in cardiovascular diseases/endocrinology/rehabilitation medicine providing care for the patient during the recruitment and follow-ups
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Sedentary behavior | change from the baseline sedentary behavior at 8 months | minutes of sedentary behavior per day assessed with ActiGraph wGT3X-BT accelerometer |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| The composition of waking time | change from the baseline composition of waking time at 8 months | 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 |
| Physical activity | change from the baseline physical activity at 8 months | minutes of light, moderate and vigorous intensity physical activity per day measured with ActiGraph wGT3X-BT accelerometer |
Other
| Measure | Time frame | Description |
|---|---|---|
| Outcome expectancies | change from the baseline outcome expectancies at 8 months | 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 |
| Action control | change from the baseline outcome expectancies at 8 months | 10 questionnaire items assessing action control; mean item score ranging from 1 to 4, higher scores indicate stronger action control |
| Intention | change from the baseline intention at 8 months | 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 |
| Sedentary behavior habit | change from the baseline sedentary behavior habit at 8 months | Self-Reported Habit Scale; mean item score ranging from 1 to 4, higher scores indicate stronger sedentary behavior habit |
| Environmental cues for sedentary behavior | change from the baseline planning at 8 months | 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 |
| Body mass index (BMI) | change from the baseline planning at 8 months | 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. |
| Self-reported planning | change from the baseline planning at 8 months | 4 questionnaire items assessing action planning; mean item score ranging from 1 to 4, higher scores indicate a higher level of self-reported planning |
| Self-efficacy for reducing sedentary behavior | change from the baseline self-efficacy at 8 months | 9 self-efficacy questionnaire items; mean item score ranging from 1 to 4, higher scores indicate stronger self-efficacy |
| Risk perception | change from the baseline risk perception at 8 months | 3 questionnaire items to assess risk perception; mean item score ranging from 1 to 4, higher scores indicate higher risk perception |
Countries
Poland
Contacts
Primary ContactAleksandra Luszczynska, PhD
Backup ContactEwa Kulis, MA
Outcome results
None listed