Immediate effects of pressure and ultrasound biofeedback in core training in asymptomatic individuals: crossover trial

Immediate effects of pressure and ultrasound biofeedback in core training in asymptomatic individuals: crossover trial - Clinical study of feedback effects in core training in asymptomatic individuals

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000044238

Enrollment

Registered

2021-05-18

Start date

2021-05-29

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

asymptomatic individuals

Interventions

pressure biofeedback: 10 minutes ultrasound biofeedback: 10 minutes

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Being a staff member of Keio University School of Medicine or Keio University Hospital To eliminate bias, ages under 40 and over 40 are recruited in the range 4: 6 to 6: 4, and genders are recruited in the range 4: 6 to 6: 4 for men and women Asymptomatic individuals Those who understand the research content and obtain informed consent

Exclusion criteria

Exclusion criteria: Contraindicated cases of exercise therapy Cases with a history of lumbar spine disease Cases with a history of neuromuscular disease Cases with a history of abdominal / lumbar surgery Pregnant women

Design outcomes

Primary

Measure	Time frame
Maximum transversus abdominis muscle thickness in ADIM with biofeedback after training (measured by ultrasound)	—

Secondary

Measure	Time frame
Resting transversus abdominis muscle thickness (measured by ultrasound) Resting external oblique muscle thickness and maximum external oblique muscle thickness in ADIM after training (measured by ultrasound) Resting internal oblique muscle thickness and maximum internal oblique muscle thickness in ADIM after training (measured by ultrasound) Preferential activation ratio Waist circumference at iliac crest level	—

Measure

Time frame

Resting transversus abdominis muscle thickness (measured by ultrasound) Resting external oblique muscle thickness and maximum external oblique muscle thickness in ADIM after training (measured by ultrasound) Resting internal oblique muscle thickness and maximum internal oblique muscle thickness in ADIM after training (measured by ultrasound) Preferential activation ratio Waist circumference at iliac crest level

—

Countries

Japan

Contacts

Public ContactAiko Ishikawa

Keio University School of Medicine Department of Rehabilitation Medicine

aishi@keio.jp03-5363-3833

Outcome results

None listed

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