Muscle nerves may hold key to easier breathing and cooling during workouts
NCT ID NCT07452094
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This early-phase study at Northern Arizona University will test 15 healthy, active adults to understand how specific nerve signals from muscles (called group III/IV afferents) affect breathing, sweating, and skin blood flow during exercise. Participants will cycle with and without a drug that blocks these signals. The goal is to learn how the body naturally regulates airway resistance and temperature during physical activity.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- cycling exercise with or without a drug that blocks certain muscle nerve signals
- What this could lead to
- If successful, this study could reveal how muscles communicate with the brain to regulate breathing and cooling during exercise, potentially guiding future treatments for exercise intolerance.
- What could go wrong
- This is a very small, early-phase study in healthy volunteers, not patients. The findings may not apply to people with medical conditions, and the drug used to block nerve signals may have side effects.
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
-
Early phase 1
The earliest testing in people: a first look at safety, in a very small group.
- Participants
-
About 15 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
-
Apr 2026
An estimate. Start dates often move.
- Expected to finish
-
Apr 2027
An estimate. End dates often move.
- Lead sponsor
-
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
-
18 to 40 years
- Sex
-
Anyone
- Healthy volunteers
-
Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide 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: * regularly physically active as determined via questionnaires (Par-Q \& You) * maximal aerobic power 30 mL/min/kg (female), 40 mL/kg/min (male) Exclusion Criteria: * current smokers * acute bronchial asthma * diabetics * chronic back pain * peripheral neuropathy * chronic obstructive airway or status asthmaticus * obese (body mass index \> 30 kg/m2) * convulsive disorders * requiring daily medications that may affect responses to exercise (e.g. anti-hypertensive, anti-arrhythmogenics, blood thinners) * history of drug abuse * history of disease/dysfunction that could cause complication with exercise (e.g. cardiovascular, respiratory, neurological, musculoskeletal) * irregular or absent menstrual cycle * pregnant or suspected pregnancy * adverse response to physical exercise * current or history of esophageal or gastric disease, or frequent heart burn (\>2x per week) * Lidocaine allergy
Get updates
Get notified about this study
Sign up to get updates when this study changes or when new studies for Experimental are added.
Genom att skicka in godkänner du våra Användarvillkor
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.
-
The places running it
1 site. The list below names each one and where it is.
-
The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
-
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
-
Northern Arizona University
Flagstaff, Arizona, 86011, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Can a common supplement boost female rugby performance?
- Could a cup of coffee boost your workout after 55?
- Can a gentle massage and scent boost appetite in dementia?
- Iron boost after hip break: could it speed up recovery?
- Creatine may boost heat adaptation in athletes, new study suggests
- Can a One-Day course help south asian adults better support youth mental health?