Evaluation of a Personalised Digital Intervention (EviBody) for Healthy and Sustained Lifestyle Behaviors and Well-being Among Adults: a Real-world Quasi-experimental Study
Effectiveness and Theory-based Evaluation of a Personalised Digital Intervention (EviBody) for Healthy and Sustained Lifestyle Behaviours and Well-being Among Adults
Sponsor: Karolinska Institutet
Listed as NCT05973383, this observational or N/A phase trial focuses on Well-being and remains actively recruiting participants. Sponsored by Karolinska Institutet, it has been updated 7 times since 2026, reflecting limited change activity. This study adds to the evidence base for this therapeutic area through structured, versioned documentation.
Study Description(click to expand)EviBody is a personally tailored digital intervention promoting healthy habits that is co-developed, based on behavioural research evidence, and supported by artificial intelligence.
The primary study is a quasi-experimental study with a non-randomised control group. A four-armed design will allow for comparison between three levels of intervention (basic, standard and premium) and a control group. The digital intervention (the app EviBody) will be marketed and managed by its owner LongLife Active AB (Limited Company), Sweden. Allocation to intervention arm is by preference (chosen membership level of the app) and takes place at enrolment. Being a research participant includes answering seven questionnaires during two years and allowing researchers to extract data from app analytics. Ethical approval was obtained from the Swedish Ethical Review Authority, Dnr 2023-06246-01 on January 30 2024.
EviBody is a personally tailored digital intervention promoting healthy habits that is co-developed, based on behavioural research evidence, and supported by artificial intelligence.
The primary study is a quasi-experimental study with a non-randomised control group. A four-armed design will allow for comparison between three levels of intervention (basic, standard and premium) and a control group. The digital intervention (the app EviBody) will be marketed and managed by its owner LongLife Active AB (Limited Company), Sweden. Allocation to intervention arm is by preference (chosen membership level of the app) and takes place at enrolment. Being a research participant includes answering seven questionnaires during two years and allowing researchers to extract data from app analytics. Ethical approval was obtained from the Swedish Ethical Review Authority, Dnr 2023-06246-01 on January 30 2024.
Status Flow
Change History
7 versions recorded-
May 4, 2026 — Present [daily]
Recruiting
Status: Not Yet Recruiting → Recruiting
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Jan 2026 — May 2026 [monthly]
Not Yet Recruiting
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Sep 2024 — Jan 2026 [monthly]
Not Yet Recruiting
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Jul 2024 — Sep 2024 [monthly]
Not Yet Recruiting
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May 2024 — Jul 2024 [monthly]
Not Yet Recruiting
▶ Show 2 earlier versions
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Nov 2023 — May 2024 [monthly]
Not Yet Recruiting
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Sep 2023 — Nov 2023 [monthly]
Not Yet Recruiting
First recorded
Eligibility Summary
The goal of this quasi-experimental observational study is to evaluate the impact of a personally tailored digital intervention aimed to support a healthy lifestyle on well-being, lifestyle behaviors, and mental health among the adult population. The main questions it aims to answer are: I) Is a digital intervention developed to offer personalised digital support for healthy habits effective in improving well-being compared to a control group from the general population after 6 months? II) Is the effectiveness dose-dependent (better effect with higher membership level)? III) Does the digital intervention assist in maintaining healthy eating and physical activity habits, mental health, and well-being across 24 months? IV) Are sociodemographic factors associated with achieving the self-identified goals and improvements in eating and physical activity habits, mental health, and well-being? VI) Do engagement, motivation, self-efficacy, and perceived barriers mediate the associations between sociodemographic characteristics and changes in self-identified goals, eating and physical activity habits, mental health, and well-being over a 24-month period? V) How is the pattern of user engagement across 24 months? Participants are users of the mobile phone application EviBody. The group will be compared with individuals from the general population to evaluate if the digital intervention is effective in improving well-being, eating and physical activity habits, and mental health.
Contact Information
- Karolinska Institutet
- Linnaeus University
- Sophiahemmet University
- Stockholm University
- The Swedish School of Sport and Health Sciences
For direct contact, visit the study record on ClinicalTrials.gov .