Effects of resistance training on baseball performance in 15-year-old boys

Effects of resistance training on baseball performance in 15-year-old boys. - Impact of Resistance Training on Youth

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000055437

Enrollment

Registered

2024-09-06

Start date

2024-09-16

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

Muscle mass and strength

Interventions

Resistance training (squatting) will be prescribed twice a week for 8 weeks.The first week will start at 50% of 1RM, and the load will be progressively increased. The non-training group will lead a no

Eligibility

Sex/Gender

Male

Inclusion criteria

Inclusion criteria: High school freshman male who has never engaged in resistance training and does not currently have an ongoing exercise routine such as athletic club activities

Exclusion criteria

Exclusion criteria: Biologically female, sophomore or above in high school

Design outcomes

Primary

Measure	Time frame
Measurements of 5RM of squat 8 weeks after the start of training	—

Countries

Japan

Contacts

Public ContactTakumi Washida

Waseda University Graduate School of Sport Sciences

takumigogo0221@akane.waseda.jp090-4752-5006

Outcome results

None listed

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