Previously submitted to: Journal of Medical Internet Research (no longer under consideration since Jul 27, 2026)
Date Submitted: May 21, 2026
Open Peer Review Period: May 22, 2026 - Jul 17, 2026
(closed for review but you can still tweet)
NOTE: This is an unreviewed Preprint
Warning: This is a unreviewed preprint (What is a preprint?). Readers are warned that the document has not been peer-reviewed by expert/patient reviewers or an academic editor, may contain misleading claims, and is likely to undergo changes before final publication, if accepted, or may have been rejected/withdrawn (a note "no longer under consideration" will appear above).
Peer review me: Readers with interest and expertise are encouraged to sign up as peer-reviewer, if the paper is within an open peer-review period (in this case, a "Peer Review Me" button to sign up as reviewer is displayed above). All preprints currently open for review are listed here. Outside of the formal open peer-review period we encourage you to tweet about the preprint.
Citation: Please cite this preprint only for review purposes or for grant applications and CVs (if you are the author).
Final version: If our system detects a final peer-reviewed "version of record" (VoR) published in any journal, a link to that VoR will appear below. Readers are then encourage to cite the VoR instead of this preprint.
Settings: If you are the author, you can login and change the preprint display settings, but the preprint URL/DOI is supposed to be stable and citable, so it should not be removed once posted.
Submit: To post your own preprint, simply submit to any JMIR journal, and choose the appropriate settings to expose your submitted version as preprint.
Warning: This is an author submission that is not peer-reviewed or edited. Preprints - unless they show as "accepted" - should not be relied on to guide clinical practice or health-related behavior and should not be reported in news media as established information.
Instagram‑Based Exercise Promotion for Sedentary Adults in Malaysia: Acceptability, Pre‑Post Changes, and Predictors of Response
ABSTRACT
Background:
The high prevalence of sedentary lifestyles and non‑communicable diseases in Malaysia calls for scalable physical activity interventions. Hence, in this study, we leverage on the potential benefits of social media for exercise promotion, particularly Instagram.
Objective:
This pilot study examined the acceptability, observed changes, and predictors of improvement associated with an Instagram‑based exercise promotion among sedentary adults in Klang Valley, Malaysia.
Methods:
A total of 56 sedentary adults (34 females, 22 males) were recruited; 50 completed the 12‑week intervention (mean sedentary behaviour 7.30±2.75 hours/day; retention rate 89.3%). Participants joined a private Instagram page delivering cardiorespiratory‑focused exercise content every two days. Pre‑ and post‑intervention assessments included anthropometry, body composition (InBody 370), 6‑Minute Walk Test (6MWT), and Client Satisfaction Questionnaire‑8 (CSQ‑8).
Results:
Significant pre‑post changes were observed in body weight (mean change -2.05±2.88 kg, P<.001), BMI (-0.83±1.11 kg/m², P<.001), body fat percentage (-2.23±1.91%, P<.001), and 6MWT distance (67.82±40.81 m, P<.001). The mean total CSQ‑8 score was 27.02±4.91 (out of 32), indicating high satisfaction. Baseline body fat percentage, baseline 6MWT distance, and gender were associated with the degree of functional change (R²=0.71).
Conclusions:
This pilot study suggests that an Instagram‑based intervention is acceptable and may be associated with positive health changes among sedentary adults. These findings support the need for a definitive randomised controlled trial in the future.
Citation
Request queued. Please wait while the file is being generated. It may take some time.
Copyright
© The authors. All rights reserved. This is a privileged document currently under peer-review/community review (or an accepted/rejected manuscript). Authors have provided JMIR Publications with an exclusive license to publish this preprint on it's website for review and ahead-of-print citation purposes only. While the final peer-reviewed paper may be licensed under a cc-by license on publication, at this stage authors and publisher expressively prohibit redistribution of this draft paper other than for review purposes.