Evaluation of a Personalised Digital Intervention (EviBody) for Healthy and Sustained Lifestyle Behaviors and Well-being Among Adults: a Real-world Quasi-experimental Study

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.

Conditions

• Well-being

Interventions

BEHAVIORAL

EviBody- Basic

The app EviBody with three core subjects: 1\) a Healthy eating, 2) Physical activity, and 3) Mental balance. The intervention includes tracking and self-monitoring of behaviors, goal setting, action planning, feedback and digital rewards, an AI chat, a database with food recipes, a database with exercises, inspiration, and skills training webinars.

BEHAVIORAL

EviBody- Standard

The digital service EviBody with three core subjects: 1\) a Healthy diet, 2) Physical activity, and 3) Mental balance. The service includes tracking and self-monitoring of behaviors, goal setting, action planning, feedback and digital rewards, an AI chat, a database with food recipes, a database with exercises, inspiration, and skills training webinars. Users with the membership Standard are also offered a community with social support.

BEHAVIORAL

EviBody- Premium

The digital service EviBody with three core subjects: 1\) a Healthy diet, 2) Physical activity, and 3) Mental balance. The service includes tracking and self-monitoring of behaviors, goal setting, action planning, feedback and digital rewards, an AI chat, a database with food recipes, a database with exercises, inspiration, and skills training webinars. Users with the membership Premium are also offered a community with social support plus private on-line health consultations. The number of private health consultations is 3 for a 3 months subscription, 4 for a 6 months subscription, and 6 for a 12 months subscription.

Sponsors & Collaborators

• Karolinska Institutet

  collaborator OTHER

• Stockholm University

  collaborator OTHER

• The Swedish School of Sport and Health Sciences

  collaborator OTHER

• Linnaeus University

  collaborator OTHER

• Sophiahemmet University

  lead OTHER

Principal Investigators

• Jenny Rossen, PhD · Sophiahemmet University

Eligibility

Min Age

18 Years

Sex

ALL

Healthy Volunteers

Yes

Timeline & Regulatory

Start

2026-01-01

Primary Completion

2026-12-31

Completion

2028-12-31

Countries

• Sweden

Study Locations