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Could a smart ring unlock secrets of pregnancy health?

NCT ID NCT05709327

Knowledge-focused Sponsor: KK Women's and Children's Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing This study
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Aug 10, 2026 · Last updated Aug 11, 2026 · Updated 1 time

Summary

This study tests whether a smart ring (Oura Ring) can be used to monitor physical activity and sleep in healthy pregnant women from the first to third trimester. Researchers will assess how acceptable and easy the ring is to use, and whether maternal factors like age, weight gain, and stress relate to activity and sleep patterns. The goal is to see if wearable technology can provide useful health insights during pregnancy.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Oura Ring smart ring wearable technology
What this could lead to
If successful, this could support using wearable rings to monitor physical activity and sleep in pregnancy, potentially improving maternal health tracking.
What could go wrong
This is a small observational study, so results may not apply broadly. The ring's accuracy and user compliance during pregnancy are uncertain.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

82 people

The number who actually took part.

Started

Sep 2023

Expected to finish

Dec 2026

An estimate. End dates often move.

Lead sponsor

A government agency

The lead sponsor is a government body.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

21 to 45 years

Sex

Female participants only

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion criteria: 1. From the first to third trimester of pregnancy (4-39 weeks of gestational age) 2. Mobile phone's operating system supported by the smart ring application. 3. Aged 21 and above Exclusion criteria: 1. Can't read or speak English 2. Below 21 years of age 3. Below or above gestational age limit 4. Limited mobility 5. Diagnosed with severe unstable mental conditions 6. Diagnosed with severe chronic disorders 7. Mobile device not compatible with smart ring

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Pregnancy

Contacts and locations

Locations

  • KK Women's and Children's Hospital

    Singapore, Singapore, 229899, Singapore

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