Effect of caffeine intake on fat oxidation during and after aerobic exercise in women using oral contraceptives

Effect of caffeine intake on fat oxidation during and after aerobic exercise in women using oral contraceptives - Effect of caffeine intake on fat oxidation during and after aerobic exercise in women using oral contraceptives

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000061065

Enrollment

Registered

2026-03-26

Start date

2024-02-01

Completion date

Unknown

Last updated

2026-06-29

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

Conditions

Healthy adults

Interventions

Participants ingested caffeinated coffee 60-min before exercise. Participants ingested decaffeinated coffee 60-min before exercise.

Eligibility

Sex/Gender

Female

Inclusion criteria

Inclusion criteria: 1.Participants who provided informed consent to participate in this study. 2.Participants who had been taking oral contraceptives for at least 6 months prior to the start of the study. 3.Participants who were sedentary (i.e., <30 min of aerobic exercise per session, <2 times per week).

Exclusion criteria

Exclusion criteria: 1.smoker. 2.obesity (body mass index >30kg/m2). 3.metabolic disease

Design outcomes

Primary

Measure	Time frame
Fat oxidation, serum caffeine concentration	—

Countries

Japan

Contacts

Public ContactMegumi Wanifuchi

Nippon Sport Science University Graduate School

25sda08@nittai.ac.jp03-5706-0966

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026