Clinical trial NCT03399916: Ecological Momentary Determinants of Sedentary Behavior
Official title: TranSITion: Ecological Momentary Determinants of Sedentary Behavior
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Sedentary Behavior
Lead sponsor: Arizona State University
Sponsor class: OTHER
Collaborators: name: American College of Sports Medicine
First posted: 2018-01-17
Enrollment: 17
Sex: ALL
Minimum age (years): 18
Maximum age (years): 65
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: FACTORIAL
Intervention model description: PART B: A three-factor design with two-levels yielded eight experimental conditions, half of which encouraged standing more (stand; n prompt types = 80, n total prompts =800) and the other half encouraged moving more (move; n prompt types = 80, n total prompts =800).
Primary purpose: PREVENTION

Brief summary: A two phase trial to understand the personal, behavioral, environmental, and contextual factors that underpin sedentary behavior and to systematically test a series of contextual prompt characteristics that may lead to subsequent change in sedentary behavior.

Detailed description: Phase 1: This is an observational study that will utilized Ecological Momentary Assessment, to determine which personal (e.g. fatigue, mood, and stress level), behavioral (e.g. watching TV, working at desk, and eating meals), environmental (e.g. being at home or work, time of the day, and weather) and contextual factors were associated with sedentary behavior. Three EMAs per day will be sent randomly sent to participants on weekdays (Monday to Friday), for four consecutive weeks (total of 20 days). During these days, participants will also wear an activPAL device to objectively measure sedentary behavior. The purpose of the study is to identify the combination of factors most likely to precede and proceed short (\<30 min) and long (≥30 min) bouts of sedentary behavior.

Phase 2: A micro-randomized trial will be used to evaluate the efficacy of an email-based prompt to elicit a proximal effect (e.g., a postural response defined as a transition from seated to standing or seated to moving within 5 minutes to interrupt prolonged sitting) compared to a no prompt condition. A secondary aim of this study is to determine whether prompts that encourage standing are more likely to elicit a response than those that encourage moving. An exploratory aim is to examine whether varying the content of the stand or move prompt to include combinations of short term goals and employer approval, influence the magnitude of response.

Eligibility criteria: Inclusion Criteria:

* Full-time employees
* Males or females
* Ages 18-65
* Sedentary working habits (as indicated by \>7 hrs/day of sedentary time at work in the Sedentary Behavior Questionnaire)
* Willing to engage in the study assessment and intervention for 10 weeks.

Exclusion Criteria:

* Non-ambulatory, pregnant
* Non-English speaking
* Diagnosis of psychiatric problems or taking psychiatric medications
* Medical history that prohibits prolonged standing.

Primary outcomes:
measure: Minutes of sitting behavior (minutes/8h workday)
timeFrame: 40 days
measure: Minutes of standing behavior (minutes/8h workday)
timeFrame: 40 days
measure: Minutes of light-intensity physical activity (minutes/8h workday)
timeFrame: 40 days
measure: Minutes of moderate-vigorous physical activity (minutes/8h workday)
timeFrame: 40 days
Secondary outcomes:
measure: Momentary affective state (4-item Likert Scales)
timeFrame: 20 days
Other outcomes:
Locations:
city: Phoenix
country: United States
facility: Arizona State University
state: Arizona
Study officials:
References: