Effect of Caffeine Ingestion on Lower-Limb Blood Flow During Knee-Extension Exercise

Effect of Caffeine Ingestion on Lower-Limb Blood Flow During Knee-Extension Exercise - Effect of Caffeine Ingestion on Lower-Limb Blood Flow During Submaximal Exercise

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000059971

Enrollment

Registered

2025-12-05

Start date

2025-12-05

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 young adults

Interventions

Caffeine intake Placebo (Glucose) intake

Eligibility

Sex/Gender

Male

Inclusion criteria

Inclusion criteria: Individuals with no neuromuscular, internal medical, or orthopedic disorders; those with no habitual medication use or smoking history; and those who do not belong to an athletic clubs.

Exclusion criteria

Exclusion criteria: Individuals who have neuromuscular, internal medical, or orthopedic disorders; those who habitually take medication or have a history of smoking; and those who belong to an elite athletic clubs.

Design outcomes

Primary

Measure	Time frame
active muscle blood flow, arterial blood pressure, electromyography, autonomic nervous system activity	—

Secondary

Measure	Time frame
Blood lactate concentration, rating of perceived exertion (Borg scale), and heart rate	—

Countries

Japan

Contacts

Public ContactTomomi Fujimoto

Niigata University of Health and Welfare Department of Health and Sports

fujimoto@nuhw.ac.jp0252574675

Outcome results

None listed

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