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How intra-workout Caffeine Gel Supplementation impacts cycling performance

Effects of intra-workout Gel Caffeine Supplementation on the modulation of the autonomic nervous system autonomic nervous system and intermittent sprint performance in cyclists

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
REBEC
Registry ID
RBR-109zgrk9
Enrollment
Unknown
Registered
2025-11-24
Start date
2024-03-02
Completion date
Unknown
Last updated
2025-12-08

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

Conditions

Bicycling

Interventions

This is a randomized, crossover, double-blind, placebo-controlled clinical trial, approved by the Research Ethics Committee of the Federal University of Rio de Janeiro, Macaé Campus, under a substanti

Sponsors

Universidade Federal do Rio de Janeiro (UFRJ)
Lead Sponsor
Universidade Federal do Rio de Janeiro Campus Macaé
Collaborator

Eligibility

Sex/Gender
Male
Age
25 Years to 45 Years

Inclusion criteria

Inclusion criteria: Male sex; age between 25 and 45 years; at least four years of regular cycling practice; no current use of medications that interact with caffeine; and absence of medical conditions, including cardiovascular, gastrointestinal, musculoskeletal or metabolic disorders in the previous three months

Exclusion criteria

Exclusion criteria: Individuals diagnosed with gastritis; hypertension; allergy to supplement components such as flavorings or sweeteners; use of antidepressants or beta blockers; participants who did not correctly follow the experimental protocol

Design outcomes

Primary

MeasureTime frame
An increase in the peak power output obtained during the sprints performed in the intermittent exercise protocol on the cycle ergometer is expected;There was a significant increase in maximum power in sprints number 2, 3, and 4 in the caffeine (CAF) condition compared to the placebo (PLA), with p<0.05

Secondary

MeasureTime frame
It is expected that in the group supplemented with caffeine, there will be an increase in average power during sprints; a reduction in the Rate of Perceived Exertion (RPE), assessed by the Borg Scale;There was no significant difference between the studied groups (caffeine and placebo) regarding average power in sprints and Perceived Exertion (PE), assessed by the Borg Scale

Countries

Brazil

Contacts

Public ContactBeatriz Gonçalves Ribeiro Ribeiro

Universidade Federal do Rio de Janeiro

ribeirogoncalvesb@gmail.com+55(22)999429827

Outcome results

None listed

Source: REBEC (via WHO ICTRP)