The Preconception Research and Education Study for Men in Sapporo (PRES-MS): a randomized controlled trial

The Preconception Research and Education Study for Men in Sapporo (PRES-MS): a randomized controlled trial - The Preconception Research and Education Study for Men in Sapporo (PRES-MS): a randomized controlled trial

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000056050

Enrollment

900

Registered

2024-11-07

Start date

2024-11-18

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

Infertility

Interventions

Health education videos (3 times in total, every 4 months) and email interventions (3 times in total, every 4 months) regarding male fertility and overall lifestyle Health education videos (3 times in

Eligibility

Sex/Gender

Male

Inclusion criteria

Inclusion criteria: Men aged between 18 and 39 years old

Exclusion criteria

Exclusion criteria: None

Design outcomes

Primary

Measure	Time frame
Sperm DNA fragmentation index one year after baseline	—

Secondary

Measure	Time frame
Semen quality (count, concentration, and motility), health status, health behaviors, gut microbiota and bacterial metabolites, seminal microbiota, salivary testosterone and cortisol levels, and oral microbiota one year after baseline	—

Countries

Japan

Contacts

Public ContactEri Maeda

Hokkaido University Graduate School of Medicine Department of Public Health

maedae@pop.med.hokudai.ac.jp+81-11-706-5068

Outcome results

None listed

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