Results of the Sedentary Intervention Trial in Cardiac Rehabilitation (SIT-CR Study): A pilot randomized controlled trial
Abstract
Background Sedentary time (ST) is negatively associated with cardiometabolic health and fitness. Traditional cardiac rehabilitation (CR) programming may not significantly reduce ST. The objectives of the study were to assess the feasibility and practicality of activPAL devices for measuring ST in CR, and whether prompting cues to interrupt sedentary behaviour can decrease ST and improve clinical outcomes.Methods An 8-week, two-arm pilot randomized controlled trial allocated coronary artery disease patients to either a control (usual care CR) or intervention (CR + sedentary prompts from an activPAL3-VT) group. Primary outcomes included: recruitment; acceptability; completion; and, adherence rates. Secondary outcomes included changes in: ST; physical activity (PA); cardiometabolic health; psychosocial health; and, fitness.Results Forty participants (16 females; 19 intervention; 62 ± 10 years) were randomized. Outcome data were available for 95% of participants. All but one participant completed the full intervention. Most (73%) intervention participants felt the prompts had somewhat changed their sedentary behaviour. At baseline, participants spent 47% of their day sedentary. No significant group differences in changes for any of the ST, PA or fitness outcomes were observed. The mean group difference for post-intervention ST (controlling for baseline) was 30.3 min/day (95% CI: -51.7, 112.2) in favour of the intervention. The intervention group reported significantly better physical health and had a lower ratio of total cholesterol-to-high density lipoprotein when compared to controls.Conclusions It is feasible to use activPAL devices to measure ST in a CR setting. Further studies are needed to assess the effectiveness of multi-component sedentary behaviour interventions.
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Patients with cardiometabolic diseases, including coronary artery disease or diabetes, spend 70% to 90% of their waking time in sedentary behavior.
“patients with cardiometabolic diseases, including patients with coronary artery disease or diabetes, spend 70% to 90% of their waking time in sedentary behavior [7-9]”
50% of total sedentary time in patients with cardiometabolic diseases is prolonged (>30 min per bout).
“50% of their total sedentary time is prolonged (>30 min per bout) [7].”
Frequent, short breaks (walking 5 min for every hour sitting) are practical, low-burden alternatives to exercise, proven to improve glucose and insulin levels.
“Frequent, short breaks (walking 5 min for every hour sitting) are practical, low-burden alternatives to exercise, proven to improve glucose and insulin levels [7,39].”
Intervention studies on sedentary breaks in T2D or CVD are limited and mostly short-term laboratory studies.
“However, intervention studies on sedentary breaks in T2D or CVD are limited and mostly short-term laboratory studies [7,39].”
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The Role of Wearable Devices in Chronic Disease Monitoring and Patient Care: A Comprehensive Review
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- Authors
- Prince, S. A., Reed, J. L., Cotie, L. M., Harris, J., Pipe, A. L., & Reid, R. D.
- Affiliations
- University of Ottawa (CA)
- Ottawa Heart Institute (CA)
- Venue
- International Journal of Cardiology
- Publisher
- Elsevier BV
- Published
- 2018-10
- Volume
- 269
- Pages
- 317-324
- ISSN
- 0167-5273 (ISSN-L)
- OpenAlex
- W2883117634
- Cited by
- 40
- References
- 51
- Citations by year
- 2026: 6 · 2025: 4 · 2024: 5 · 2023: 5 · 2022: 4 · 2021: 5 · 2020: 10 · 2018: 1
- FWCI
- 2.74
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- International Journal of Cardiology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- University of Ottawa
- University of Ottawa Heart Institute Foundation
- Topics
- Health Sciences › Medicine › Physiology › Physical Activity and Health
- Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Health and Mental Health
- Health Sciences › Health Professions › General Health Professions › Mobile Health and mHealth Applications
- Keywords
- sedentary behavior, cardiac rehabilitation, coronary artery disease, physical activity, cardiometabolic health, feasibility, TC/HDL-C ratio, psychosocial health, exercise adherence
- MeSH terms
- Cardiac Rehabilitation, Aged, Coronary Artery Disease, Feasibility Studies, Female, Humans, Male, Middle Aged, Pilot Projects, Exercise, Sedentary Behavior, Early Medical Intervention
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