SportsNCT06243341
The Impact of MACA Supplementation on Basketball-related Performance
A study testing Lepidium meyenii (MACA) in people with Sports, run by National Taiwan Sport University at 1 site in Taiwan.
Trial summary
In this randomized crossover study, ten elite healthy male basketball players were included. Following a 17:00 PM training routine, participants completed a two-week supplementation with 2000 mg of MACA or placebo. Read more about this study
- Who is it for?
- Ages 20 to 30 years, men onlyHealthy volunteers can take part
- Conditions the study is for
- Sports
- What is being tested?
- Lepidium meyenii (MACA)
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 10 participants
- Where
- 1 siteTaiwan
- Study dates
- 1 Jun 2022to 30 Sep 2022
- 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 30 years
- Men only
- Healthy volunteers accepted
- Adult
Who may be able to join
- (i) healthy male adults, those individuals who are free of pain, insomnia, or other injuries recently, without any medication used in recent 2 months,
- (ii) basketball players competing in a Taiwan university basketball association for more than two years.
Who cannot join
- (i) were below 20 years old,
- (ii) did not have won at least eighth place in national-level basketball competitions,
- (iii) were with cardiovascular diseases or any disease that made subjects feel ill.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: The Impact of Lepidium Meyenii (MACA) Supplementation on Basketball-related Performance and Anti-fatigue Ability: a Double Blind Crossover Study
In this randomized crossover study, ten elite healthy male basketball players were included. Following a 17:00 PM training routine, participants completed a two-week supplementation with 2000 mg of MACA or placebo. After supplementation, participants underwent a Basketball Jump Shooting Accuracy Test and Repeated Sprint Ability Test.
Read the detailed description
Supplementation with Lepidium meyenii (MACA) has been shown in animal studies to increase blood lactate clearance and rapid lactate removal, which may be effective in reducing fatigue during intermittent exercise. However, no studies have investigated the effects of MACA supplementation on interval exercise and basketball performance. We hypothesized that MACA supplementation could reduce fatigue and improve performance in elite healthy male basketball players. This study aimed to determine the effectiveness of MACA compared to placebo on overall basketball performance.
- Conditions
- Sports
- Being tested
- Lepidium meyenii (MACA)
- Keywords
- Lepidium meyenii, Basketball Jump Shooting Accuracy Test, Repeated Sprint Ability Test, blood lactate clearance rate, ergogenic aids
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Lepidium meyenii (MACA)Dietary supplement
Also called 100% corn-starch maltodextrin powder
The MACA supplement is derived from a concentrated 6:1 blend of black, red, and yellow MACA root compounds, with an 80:15:5 ratio respectively.
| Study group | Role | What they receive |
|---|---|---|
| MACA (MC) | Experimental | Daily MACA supplementation for two weeks. Receives: Dietary Supplement: Lepidium meyenii (MACA) |
| placebo | Placebo comparator | Daily placebo supplementation for two weeks. Receives: Dietary Supplement: Lepidium meyenii (MACA) |
What is being measured
The primary outcome is the main question the study is designed to answer.
Countermovement jump test
Three jumps were measured with 1 minute rest for each participant.
Measured: immediately after 2 weeks intervention
Secondary outcomes (2)
Basketball Jump Shooting Accuracy Test
The first test was the basketball jump shooting Accuracy Test (BJSAT), which has been used in the past with sufficient reliability to two and three-point shooting accuracy
Measured: immediately after 2 weeks intervention
Repeated Sprint Ability Test
Repeated Sprint Ability test (40× 15m with a 1:4, exercise : rest time ratio, such as 2 seconds :8 seconds)
Measured: immediately after 2 weeks intervention
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted6 Feb 2024
- Study start1 Jun 2022
- Primary completion30 Sep 2022
- Study completion30 Sep 2022
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (2)Papers the sponsor has linked to this study.
- Other trials for SportsStudies 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
- Basic science
- Allocation
- Randomised
- Intervention model
- Crossover
- Model description
- a double blind crossover study
- Masking
- Single blind
- Who is masked
- Investigator
- Enrolment
- 10 participants (actual)
Sponsor and investigators
- Lead sponsor
- National Taiwan Sport University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Chih-Hui Chiu, National Taiwan Sport University
- Investigators
- Che-Hsiu Chen, PhD, Study director, Sport Science Research Center
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06243341
- Sponsor's protocol ID
- 113-1
- Status last verified
- Feb 2024
- First submitted
- 14 Jan 2024
- Last updated
- 6 Feb 2024
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No: No personal data of participants will be provided
Publications
Stone M, Ibarra A, Roller M, Zangara A, Stevenson E. A pilot investigation into the effect of maca supplementation on physical activity and sexual desire in sportsmen. J Ethnopharmacol. 2009 Dec 10;126(3):574-6. doi: 10.1016/j.jep.2009.09.012. Epub 2009 Sep 23.
PubMed 19781622Wu PS, Wu SH, Jiang RS, Chen CH, Chen BW, Chiu CH. The Impact of Lepidium meyenii (MACA) Supplementation on Basketball-related Performance and Antifatigue Ability: A Double-blind Crossover Study. J Physiol Investig. 2025 Sep 1;68(5):297-304. doi: 10.4103/ejpi.EJPI-D-25-00037. Epub 2025 Sep 17.
PubMed 40960048
Study at a glance
From the registry record, last updated by the sponsor on 6 Feb 2024. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Impact of Lepidium Meyenii (MACA) Supplementation on Basketball-related Performance and Anti-fatigue Ability: a Double Blind Crossover Study
- ClinicalTrials.gov ID
- NCT06243341
- Acronym / sponsor ID
- 113-1
- Conditions
- Sports
- Keywords
- Lepidium meyenii, Basketball Jump Shooting Accuracy Test, Repeated Sprint Ability Test, blood lactate clearance rate, ergogenic aids
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 10 participants (actual)
- Lead sponsor
- National Taiwan Sport UniversityUniversity, hospital or other
- Study start
- 1 Jun 2022 (actual)
- Primary completion
- 30 Sep 2022 (actual)
- Study completion
- 30 Sep 2022 (actual)
- First posted
- 6 Feb 2024 (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.
In this randomized crossover study, ten elite healthy male basketball players were included. Following a 17:00 PM training routine, participants completed a two-week supplementation with 2000 mg of MACA or placebo. After supplementation, participants underwent a Basketball Jump Shooting Accuracy Test and Repeated Sprint Ability Test.
Detailed description
Supplementation with Lepidium meyenii (MACA) has been shown in animal studies to increase blood lactate clearance and rapid lactate removal, which may be effective in reducing fatigue during intermittent exercise. However, no studies have investigated the effects of MACA supplementation on interval exercise and basketball performance. We hypothesized that MACA supplementation could reduce fatigue and improve performance in elite healthy male basketball players. This study aimed to determine the effectiveness of MACA compared to placebo on overall basketball performance.
Study design
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Single blind (investigator)
- Number of arms
- 2
- Model description
- a double blind crossover study
| Arm | Type | Receives |
|---|---|---|
| MACA (MC) | Experimental | Dietary Supplement: Lepidium meyenii (MACA)Daily MACA supplementation for two weeks. |
| placebo | Placebo comparator | Dietary Supplement: Lepidium meyenii (MACA)Daily placebo supplementation for two weeks. |
Who may qualify
- Ages
- 20 to 30 years
- Sex
- Male only
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (2 listed)
- (i) healthy male adults, those individuals who are free of pain, insomnia, or other injuries recently, without any medication used in recent 2 months,
- (ii) basketball players competing in a Taiwan university basketball association for more than two years.
Key exclusion criteria (3 listed)
- (i) were below 20 years old,
- (ii) did not have won at least eighth place in national-level basketball competitions,
- (iii) were with cardiovascular diseases or any disease that made subjects feel ill.
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 |
|---|---|---|
| Lepidium meyenii (MACA)Also: 100% corn-starch maltodextrin powderThe MACA supplement is derived from a concentrated 6:1 blend of black, red, and yellow MACA root compounds, with an 80:15:5 ratio respectively. | Dietary supplement | MACA (MC), placebo |
Primary outcome
Countermovement jump test
Time frame: immediately after 2 weeks intervention
Three jumps were measured with 1 minute rest for each participant.
2 secondary outcomes
Basketball Jump Shooting Accuracy Test
Time frame: immediately after 2 weeks intervention
Repeated Sprint Ability Test
Time frame: immediately after 2 weeks intervention
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 6 Feb 2024.
- Results publication: PubMed 19781622Stone M, Ibarra A, Roller M, Zangara A, Stevenson E. A pilot investigation into the effect of maca supplementation on physical activity and sexual desire in sportsmen. J Ethnopharmacol. 2009 Dec 10;126(3):574-6. doi: 10.1016/j.jep.2009.09.012. Epub 2009 Sep 23.
- Derived from this study: PubMed 40960048Wu PS, Wu SH, Jiang RS, Chen CH, Chen BW, Chiu CH. The Impact of Lepidium meyenii (MACA) Supplementation on Basketball-related Performance and Antifatigue Ability: A Double-blind Crossover Study. J Physiol Investig. 2025 Sep 1;68(5):297-304. doi: 10.4103/ejpi.EJPI-D-25-00037. Epub 2025 Sep 17.
- Individual participant dataSharing planned: No. No personal data of participants will be provided
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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.
Che-Hsiu Chen, PhD study director
Sport Science Research Center
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Lepidium meyenii (MACA) in people with Sports, run by National Taiwan Sport University 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 2 inclusion and 3 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 6 Feb 2024. 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?
Countermovement jump test (time frame: immediately after 2 weeks intervention). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT06243341, which also lists 2 linked publications.
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 6 Feb 2024.