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Resistance Training Study

Impact of Training History on Skeletal Muscle Adaptations to Resistance Training, Detraining, and Retraining - RT-DT-reRT Study

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000061117
Enrollment
90
Registered
2026-04-14
Start date
2026-03-30
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

Not applicable: Healthy men volunteers

Interventions

All participants underwent a sequential protocol consisting of 10 weeks of resistance training, followed by 12 weeks of detraining and 10 weeks of retraining.

Sponsors

Ritsumeikan University
Lead Sponsor

Eligibility

Sex/Gender
Male

Inclusion criteria

Inclusion criteria: Healthy men aged between 18 and 30. Participants who have been assessed by the principal investigator or a co-investigator and found to be in good health. Participants who have received a full explanation of the studys objectives and methods and have provided written consent.

Exclusion criteria

Exclusion criteria: Those who have orthopedic conditions affecting the upper or lower extremities. Those who have known allergies to any food components included in the provided meals. Those who have confirmed or suspected hepatitis B or C infection. Those who have a history of cardiovascular disease, including heart disease or hypertension. Those who are deemed unsuitable for participation by the principal investigator.

Design outcomes

Primary

MeasureTime frame
Changes in human muscle mass following 10 weeks of resistance training, 12 weeks of detraining, and 10 weeks of retraining.

Secondary

MeasureTime frame
Changes in skeletal muscle and circulating protein levels, as well as gene expression, following 10 weeks of resistance training, 12 weeks of detraining, and 10 weeks of retraining.

Countries

Japan

Contacts

Public ContactSatoshi Fujita

Ritsumeikan University Faculty of Sport and Health Science

safujita@fc.ritsumei.ac.jp077-561-5229

Outcome results

None listed

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