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Impact of herbal blend on amateur runners: hidden clinical study

Effects of acute supplementation with Alpinia galanga and maca root on markers of athletic performance in amateur runners: a randomized, double-blind, crossover clinical trial

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
REBEC
Registry ID
RBR-786s55w
Enrollment
15
Registered
2026-04-02
Start date
2023-03-07
Completion date
Unknown
Last updated
2026-04-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Running Athletic Performance

Interventions

This is a randomized, double-blind clinical trial. Participants who meet the eligibility criteria will be probabilistically allocated into three intervention groups using a random number table. Both t
Alpinia galanga – 5 participants will receive 500 mg. Placebo group: 5 participants will receive oral supplementation of cornstarch at a dose of 2000 mg. Supplement intake will occur 30 minutes prior

Sponsors

União Brasileira de Educação e Assistência
Lead Sponsor
União Brasileira de Educação e Assistência
Collaborator

Eligibility

Age
18 Years to 45 Years

Inclusion criteria

Inclusion criteria: amateur runners of both sexes; aged between eighteen and fortyfive years; who have been training for running for at least six months; and who engage in at least one hundred and fifty minutes of physical activity per week

Exclusion criteria

Exclusion criteria: individuals diagnosed with any chronic disease or condition such as hypertension; type one or type two diabetes mellitus; as well as those using dietary supplements or medications

Design outcomes

Primary

MeasureTime frame
It is expected that supplementation with Peruvian maca will lead to improvements in running performance and anthropometric markers. Specifically, improvements are anticipated in cardiorespiratory fitness, assessed through maximal oxygen consumption (VO2max), as well as in test time and distance traveled during the running test.

Secondary

MeasureTime frame
It’s expected to find changes in anthropometric and physiological parameters, including total body mass and urine specific gravity

Countries

BR

Contacts

Public ContactGiuseppe Stefani

Pontifícia Universidade Católica do Rio Grande do Sul

giuseppe.stefani@pucrs.br+55 (51)33203345

Outcome results

None listed

Source: REBEC (via WHO ICTRP) · Data processed: May 1, 2026