Understanding the Impact of Soccer Heading on Brain of Young Players

Brain Impact of Soccer Heading in Youth Players: Evaluation Using Pupillary Light Reflex and Cerebral Blood Flow Monitoring

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-jRCT1050250130

Enrollment

Registered

2025-10-14

Start date

2025-10-14

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

Effects of soccer heading on brain function in healthy adolescents Traumatic Brain Injury, Soccer

Interventions

The following types of burden may arise for the participants. Participants will spend time to undergo the study procedures. During the experiment, participants will experience physical burden due to h

Behavioral, Device (Diagnostic Test)

Cerebral blood flow, Pupillary light reflex

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Healthy individuals Aged between 13 and 18 years at the time of enrollment With at least one year of experience playing soccer Written informed consent obtained from the participant

Exclusion criteria

Exclusion criteria: Neurological diseases (e.g., brain tumor, traumatic brain injury, cerebrovascular disease, or central nervous system infection) Migraine Vestibular dysfunction Ocular or visual impairment Psychiatric disorders

Design outcomes

Primary

Measure	Time frame
Pupillary response before and after heading	—

Secondary

Measure	Time frame
Changes in cerebral blood flow before and after heading	—

Contacts

Public ContactJunzo Nakao

Osaka Medical and Pharmaceutical University

junzo.nakao@ompu.ac.jp+81-726831221

Outcome results

None listed

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