User Agreement

Purpose of this agreement

This agreement explains how participants are expected to use the Metasleep research app and Huawei Watch D2 during the study. It should be read together with the official participant information, informed-consent documents, and Privacy Policy.

About the research app

Metasleep is a research app serving Spain. The app is used by the research team affiliated with Universitat de Lleida and IRB Lleida / IRBLleida to collect authorized biometric data from study participants for scientific research. The study goal is to monitor participants to assess treatment efficacy on blood-pressure outcomes.

The technical access method is server-to-server data retrieval through the Huawei Health Service Kit REST API, after participant authorization where required.

Eligibility and participation

Participation is limited to people enrolled in the approved research study who have completed the official informed-consent process. Participation is voluntary. The study team may provide additional instructions about study procedures, device use, synchronization, and contacts.

Use of the Huawei Watch D2

Each participant receives or uses one Huawei Watch D2 to measure daily biometric parameters. Participants are expected to:

• wear or use the watch according to study instructions,
• keep the watch charged,
• synchronize the watch as instructed,
• report technical issues to the study team, and
• avoid sharing the device with other people during the study.

Authorization through Huawei Health

Participants may be asked to authorize access to health data through Huawei's authorization or OAuth flow and Health Service Kit. This authorization allows the research server to retrieve the categories of health data approved for the study and authorized by the participant.

Participants can revoke authorization according to Huawei account or app settings and according to study procedures. Revoking technical access may affect future data retrieval for the study, but participants should still contact the study team so withdrawal or follow-up can be handled through official procedures.

No medical or emergency service

Data use

Study data is used for scientific research, analysis of blood-pressure outcomes, treatment-efficacy assessment, research reporting, and research publication. Where possible, data used for analysis and reporting should be coded, pseudonymized, aggregated, or anonymized to reduce the risk of identifying participants.

Voluntary participation and withdrawal

Participation is voluntary. Participants may ask questions or request to withdraw according to the official study procedures. Withdrawal requests should be sent to the study team at jordi.vilaplana@udl.cat. The handling of data already collected before withdrawal will follow the approved study documents and applicable data-protection rules.

Participant responsibilities

Participants should follow study instructions, use the assigned device only as directed, keep account credentials secure, avoid authorizing data access for another person's device or account, and promptly contact the study team if the device is lost, damaged, used by someone else, or not synchronizing correctly.

Changes to the agreement

The study team may update this agreement when study information, technical procedures, or institutional requirements change. Material changes affecting participants should be communicated through the study's official procedures where required.

Contact

Principal Investigator

Jordi Vilaplana Mayoral

Research contact

jordi.vilaplana@udl.cat

Data protection / DPO contact

jordi.vilaplana@udl.cat

Acceptance