EXERCISE PERFORMANCENCT07340996
Beta Caryophyllene & Apnea Performance
A study testing interventions in people with EXERCISE PERFORMANCE, run by Chih-Hui Chiu at 1 site in Taiwan.
Trial summary
The purpose of this study is to investigate whether β-caryophyllene supplementation can enhance the static apnea capacity of freedivers. Read more about this study
- Who is it for?
- Ages 20 to 40 years, men onlyHealthy volunteers can take part
- Conditions the study is for
- EXERCISE PERFORMANCE
- What is being tested?
- interventions
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 15 participants
- Where
- 1 siteTaiwan
- Study dates
- 15 Jan 2026to 26 Apr 2026
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 20 to 40 years
- Men only
- Healthy volunteers accepted
- Adult
Who may be able to join
- With over 3 years of freediving experience
Who cannot join
- Without over 3 years of freediving experience
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Effects of Beta Caryophyllene Supplementation on Autonomic Regulation and Apnea Performance in Elite Divers - a Randomized Crossover Trial
The purpose of this study is to investigate whether β-caryophyllene supplementation can enhance the static apnea capacity of freedivers.
Read the detailed description
Using a randomized crossover design with double-blind methodology, participants were assigned to either the β-caryophyllene trial (BCP) trial or the placebo (PLA) trial, which without β-caryophyllene. Participants consumed either 200 mg of β-caryophyllene capsules (BCP trial) or placebo capsules (PLA trial) based on pre-test results. After a 30-minute rest period and warm-up, a single maximal voluntary static breath-hold test was conducted. Breath-hold duration and physiological and salivary biochemical indicators before and after the breath-hold test were observed.
- Conditions
- EXERCISE PERFORMANCE
- Being tested
- interventions, Placebo
- Keywords
- freediving
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
interventionsDietary supplement
supplementation of β-caryophyllene
PlaceboDietary supplement
Participants consumed placebo capsules (PLA trial)
| Study group | Role | What they receive |
|---|---|---|
| intervention | Experimental | supplementation β-caryophyllene Receives: Dietary Supplement: interventions; Dietary Supplement: Placebo |
| placebo | Placebo comparator | placebo Receives: Dietary Supplement: interventions; Dietary Supplement: Placebo |
What is being measured
The primary outcome is the main question the study is designed to answer.
Breath-hold duration
Measure the duration of static breath-holding
Measured: 30 minutes after intervention
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted14 Jan 2026
- Study start15 Jan 2026
- Primary completion1 Apr 2026
- Study completion26 Apr 2026
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for EXERCISE PERFORMANCEStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Model description
- randomized crossover design with double-blind methodology
- Masking
- Single blind
- Who is masked
- Investigator
- Enrolment
- 15 participants (actual)
Sponsor and investigators
- Lead sponsor
- Chih-Hui Chiu
- Sponsor type
- University, hospital or other
- Collaborators
- National Science and Technology Council, Taiwan
- Responsible party
- Sponsor-investigator, Chih-Hui Chiu, National Taiwan Sport University
- Investigators
- Chih Hui Chiu, Principal investigator, National Taiwan University of Sport
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07340996
- Sponsor's protocol ID
- 115-1
- Other IDs
- 115-1
- Status last verified
- Apr 2026
- First submitted
- 6 Jan 2026
- Last updated
- 29 Apr 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 29 Apr 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effects of Beta Caryophyllene Supplementation on Autonomic Regulation and Apnea Performance in Elite Divers - a Randomized Crossover Trial
- ClinicalTrials.gov ID
- NCT07340996
- Acronym / sponsor ID
- 115-1
- Conditions
- EXERCISE PERFORMANCE
- Keywords
- freediving
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 15 participants (actual)
- Lead sponsor
- Chih-Hui ChiuUniversity, hospital or other
- Collaborators
- National Science and Technology Council, Taiwan
- Study start
- 15 Jan 2026 (actual)
- Primary completion
- 1 Apr 2026 (actual)
- Study completion
- 26 Apr 2026 (actual)
- First posted
- 14 Jan 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study is to investigate whether β-caryophyllene supplementation can enhance the static apnea capacity of freedivers.
Detailed description
Using a randomized crossover design with double-blind methodology, participants were assigned to either the β-caryophyllene trial (BCP) trial or the placebo (PLA) trial, which without β-caryophyllene. Participants consumed either 200 mg of β-caryophyllene capsules (BCP trial) or placebo capsules (PLA trial) based on pre-test results. After a 30-minute rest period and warm-up, a single maximal voluntary static breath-hold test was conducted. Breath-hold duration and physiological and salivary biochemical indicators before and after the breath-hold test were observed.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Single blind (investigator)
- Number of arms
- 2
- Model description
- randomized crossover design with double-blind methodology
| Arm | Type | Receives |
|---|---|---|
| intervention | Experimental | Dietary Supplement: interventions, Dietary Supplement: Placebosupplementation β-caryophyllene |
| placebo | Placebo comparator | Dietary Supplement: interventions, Dietary Supplement: Placeboplacebo |
Who may qualify
- Ages
- 20 to 40 years
- Sex
- Male only
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (1 listed)
- With over 3 years of freediving experience
Key exclusion criteria (1 listed)
- Without over 3 years of freediving experience
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| interventionssupplementation of β-caryophyllene | Dietary supplement | intervention, placebo |
| PlaceboParticipants consumed placebo capsules (PLA trial) | Dietary supplement | intervention, placebo |
Primary outcome
Breath-hold duration
Time frame: 30 minutes after intervention
Measure the duration of static breath-holding
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 29 Apr 2026.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Chih Hui Chiu principal investigator
National Taiwan University of Sport
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing interventions in people with EXERCISE PERFORMANCE, run by Chih-Hui Chiu at 1 site in Taiwan.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 29 Apr 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Taiwan. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Breath-hold duration (time frame: 30 minutes after intervention). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 29 Apr 2026.