Clinical Research Directory

Caffeine Strategies and Fat Oxidation

The goal of this clinical trial is to learn if different forms of caffeine ingestion can influence fat oxidation during submaximal cycling exercise. The study will recruit healthy adults, both men and women, aged 18 to 50, who regularly perform aerobic exercise. The main questions it aims to answer are: * Does caffeine increase fat oxidation during one hour of cycling at the Fatmax intensity? * Do different forms of caffeine ingestion (capsule, coffee, chewing gum, or mouth rinse) differ in their effect on fat oxidation? * Do these caffeine forms alter total energy expenditure, cardiorespiratory response, or perceived exertion during exercise? * Are there differences in the occurrence or severity of side effects between caffeine administration methods? Researchers will compare each caffeine form to its corresponding placebo to determine their effects on fat oxidation and other physiological outcomes. Participants will: * Attend a pre-experimental session to determine their Fatmax intensity and VO₂max using an incremental cycling test * Perform eight experimental sessions, each consisting of one hour of cycling at Fatmax intensity * Receive caffeine or placebo via capsules, coffee, chewing gum, or mouth rinse according to a randomized, double-blind, crossover design * Be monitored for fat and carbohydrate oxidation, total energy expenditure, heart rate, and perceived exertion during exercise * Report any side effects immediately after the session and 24 hours later using a structured questionnaire All sessions will be conducted under controlled laboratory conditions with standardized protocols to ensure safety and reliable measurements.

An Exploratory Clinical Study on the Protective Effect of Cycling on the Ankle Joint in Gout

This study divided the enrolled gout patients into a jogging group and a cycling group to investigate 1）the effectiveness of cycling intervention in reducing the recurrence risk of gouty ankle arthritis compared with jogging. 2) To clarify the influence of different exercise patterns on the ultrasonic manifestations of gouty ankle arthritis; 3) Clarify the impact of different exercise methods on the blood uric acid levels of gout patients;

External Iliac Artery Endofibrosis in Cycling

A data request will be made regarding the tests conducted by the subject related to their performance, as well as the results of the medical diagnostic tests performed. The requested data/variables pertain to physical performance: power output on the pedals during training sessions, tests, and competitions, as well as medical tests during the diagnostic process.