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NCT05602220Completed

Heart Rate and Breathing Effects on Attention and Memory

Source: ClinicalTrials.gov · Last updated 9 Jan 2026

Brief summary (registry, in English)

In the current study, we will examine how daily paced breathing affects plasma amyloid beta levels and the rate of learning in older adults. Healthy adults aged 50-70 who meet all eligibility criteria will be invited to this study. Participants will be randomly assigned to one of the two conditions: 1) Daily memory and attention training followed by a paced breathing protocol designed to increase relaxation or 2) Daily memory and attention training followed by a paced breathing protocol to increase alertness. Participants will be asked to complete pre and post intervention cognitive testing online, engage in 10 weeks of daily brain training (starting Week 2) and 9 weeks of paced breathing (starting Week 3) at home. They will also be asked to come in for lab visits on Weeks 2, 7 and 12 to provide blood and urine samples to assess amyloid beta levels and to complete magnetic resonance imaging scans to assess perivascular space volume.

Status (registry)
Completed
Study type
Interventional
Enrollment
91 (actual)
First submitted
6 Sept 2022
Start date
11 Jan 2023
Primary completion date
6 Nov 2023
Lead sponsor
University of Southern California
NCT number
NCT05602220

What you commit to

  • Study type: Interventional
  • Participants enrolled: 91
  • From 11 Jan 2023 to the primary completion date, 6 Nov 2023
  • 1 site in 1 country
  • Visits and tests: ask the trial team, the registry does not list them

Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.

Who cannot take part

Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.

Other illness

  • have a disorder that would impede performing the breathing intervention (e.g., abnormal cardiac rhythm, heart disease including coronary artery disease, angina, and arrhythmia, cognitive impairment, dyspnea)
  • participated in heart rate biofeedback studies in the USC Emotion \& Cognition Lab
  • have any conditions listed below that are not safe for MRI
    • Claustrophobia
    • Have worked as a machinist, metal worker, or in any profession or hobby grinding metal?
    • Have had an injury to the eye involving a metallic object (e.g., metallic slivers, shavings, or foreign body)
    • Cardiac pacemaker
    • Implanted cardiac defibrillator
    • Aneurysm clip or brain clip
    • Carotid artery vascular clamp
    • Neurostimulator
    • Insulin or infusion pump
    • Spinal fusion stimulator
    • Cochlear, otologic, ear tubes or ear implant
    • Prosthesis (eye/orbital, penile, etc.)
    • Implant held in place by a magnet
    • Heart valve prosthesis
    • Artificial limb or joint
    • Other implants in body or head
    • Electrodes (on body, head or brain)
    • Intravascular stents, filters
    • Shunt (spinal or intraventricular)
    • Vascular access port or catheters
    • IUD
    • Transdermal delivery system or other types of foil patches (e.g., Nitro, Nicotine, Birth control, etc.) that cannot be removed for MRI
    • Shrapnel, buckshot, or bullets
    • Tattooed eyeliner or eyebrows
    • Body piercing(s) that cannot be removed for MRI
    • Metal fragments (eye, head, ear, skin)
    • Internal pacing wires
    • Aortic clips
    • Metal or wire mesh implants
    • Wire sutures or surgical staples
    • Harrington rods (spine)
    • Bone/joint pin, screw, nail, wire, plate
    • Wig or toupee that cannot be removed for MRI
    • Hair implants that involve staples or metal
    • Hearing aid(s) that cannot be removed for MRI
    • Dentures or retainers that cannot be removed for MRI

Other

  • regularly practicing any relaxation, biofeedback, or breathing technique (e.g., meditation) for more than an hour a week
  • regularly played Lumosity games in the past 6 months

Who the study is looking for

  • speak English fluently
  • between the age of 50-70
  • healthy adult who weighs at least 110 pounds
  • non-pregnant and non-menstruating (for at least the past year)
  • normal or corrected-to-normal vision and hearing
  • have a home computer with a physical keyboard and have access to reliable internet
  • have an email account that you check regularly
  • have a phone that receives text messages
  • willing to provide a blood sample and a urine sample at three lab visits
  • willing to devote up to 60 minutes daily to the study for 12 weeks (in addition to lab visits)

Age in the registry: 50 years to 70 years · Sex: All · Accepts healthy volunteers

Full criteria on ClinicalTrials.gov

Sites (1)

Sites in registry order. Pick your city on the disease page to sort them by distance.

SiteCityCountrySite status
University of Southern California
Coordinator of this site? Confirm its status		Los AngelesUnited StatesUnknown status

This page is information, not medical advice. Discuss any trial with your doctor.