Can tight clothing tame POTS symptoms?
NCT ID NCT04881318
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at whether wearing compression garments (like tight waist-high stockings or abdominal shapewear) can help adults with POTS feel better and lower their heart rate during normal daily activities. About 30 participants will wear the garments at home and have their heart rate and symptoms measured. The goal is to see if these store-bought garments work as well in real life as they do in a lab.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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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
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About 30 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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May 2021
- Expected to finish
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Dec 2026
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 60 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Physician diagnosis of Postural Tachycardia Syndrome (POTS) * Resident of Canada * Owns waist-high compression garment: medical grade or commercially available tights with a pressure rating provided (e.g. 15-18 mmHg, 20-30 mmHg, 30-40 mmHg) * Optional Sub-Study: owns an abdominal compression garment (e.g. abdominal shapewear, waist high shorts) * Able to participate in a 4-day study (2x2 day segments with a 5-day washout period) Exclusion Criteria: * Overt cause for postural tachycardia (i.e., acute dehydration, thyroid disease) that precludes POTS diagnosis * Not a resident of Canada * Participants with somatization or severe anxiety symptoms will be excluded * Pregnant (self-reported) * Inability to tolerate compression garments for the duration of the study * Does not own a waist-high compression garment * Other factors which in the investigator's opinion would prevent the participant from completing the protocol, including poor compliance during previous studies
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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University of Calgary
RECRUITINGCalgary, Alberta, T2N 4Z6, Canada
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