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Breathing Training to Improve Human Performance at High Altitude

University of Colorado Denver (CU Denver) logo

University of Colorado Denver (CU Denver)

Status

Completed

Conditions

Mountain Sickness Acute

Treatments

Device: Sham Breathing Training
Device: Respiratory Muscle Training

Study type

Interventional

Funder types

Other
Other U.S. Federal agency

Identifiers

NCT03530163
18-0464

Details and patient eligibility

About

Individuals traveling to altitudes above 8,000 feet may suffer from impaired exercise and cognitive performance, and acute mountain sickness (AMS). Decreased barometric pressure, which leads to low blood oxygen levels, is the primary cause of these disorders. Symptoms of AMS are characterized by headache, nausea, vomiting, dizziness, fatigue, and difficulty sleeping. The goal of this research is to identify whether Respiratory Muscle Training will improve physical and cognitive performance, and reduce the symptoms of AMS, at simulated high altitude.

Enrollment

28 patients

Sex

Male

Ages

18 to 45 years old

Volunteers

Accepts Healthy Volunteers

Inclusion criteria

  • Healthy
  • Men, ages 18-45 who are able to achieve at least 3.5 watts/kg of body weight during the peak oxygen uptake test

Exclusion criteria

  • Less than 18 years old
  • Greater than 45 years old
  • Have a body mass index greater than or equal to 30
  • Have been recent smokers (tobacco or e-cigarettes)
  • Current recreational or medical marijuana users
  • Currently taking any medication (over-the-counter or prescription) or herbal supplements
  • Participants who are unable to tolerate drinking only two, 6-ounce caffeinated beverages per day of the study
  • Participants who are legally blind
  • Participants who have been to altitudes above Denver (1609m or 5280ft), including air travel, in the 3 weeks prior to the start of the study or with plans to do so during the study
  • Participants who have suffered a significant head injury, have anemia or sickle cell trait or disease, have active peptic ulcer disease, diabetes, hypertension, heart disease, HIV/AIDS, glaucoma, kidney disease, liver disease/cirrhosis, adrenal gland failure, hyponatremia/hypokalemia, tuberculosis
  • Participants who have a current herpes infection or any other current type of viral or bacterial infection
  • Participants with seizure disorders or history of migraines

Trial design

Primary purpose

Prevention

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

Single Blind

28 participants in 2 patient groups

Respiratory Muscle Training
Experimental group
Treatment:
Device: Respiratory Muscle Training
Sham Breathing Training
Sham Comparator group
Treatment:
Device: Sham Breathing Training

Trial contacts and locations

1

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Data sourced from clinicaltrials.gov

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