Investigation on the effectiveness of abdominal hollowing home-exercises using a portable ultrasound: randomized controlled trial

Investigation on the effectiveness of abdominal hollowing home-exercises using a portable ultrasound: randomized controlled trial - Investigation on the effectiveness of abdominal hollowing home-exercises using a portable ultrasound: randomized controlled trial

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000036777

Enrollment

Registered

2019-07-01

Start date

2019-07-05

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

People with low back pain

Interventions

One-week Abdominal Hollowing home-exercise (10 s contraction x 10 reps x 3 sets x 2/day) using a portable ultrasound then no intervention for a week One-week Abdominal Hollowing home-exercise (10 s co

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: At least one episode of low back pain for at least 2 successive days with the intensity of 2 or greater in the 11-point numerical rating scale during one month Students in the Saitama Prefectural university Oswestry Disability Index of 13% or more

Exclusion criteria

Exclusion criteria: Undertaking treatment for the low back pain during the study period in the hospital Congenital disorders Diagnosed neurological disorders Diagnosed mental disorders Pregnancy Diagnosed spinal deformity

Design outcomes

Primary

Measure	Time frame
Change rate in the thickness of the transverse abdominal muscle during the Abdominal Hollowing (baseline and 1 and 2 weeks after the baseline)	—

Secondary

Measure	Time frame
Subjective difficulty of the Abdominal Hollowing (The Rating Scale Mental Effort)(baseline and 1 and 2 weeks after the baseline) Pain intensity (The P4) (baseline and 1 and 2 weeks after the baseline) Disability (The Oswestry Disability index)(baseline and 1 and 2 weeks after the baseline) Quality of life (The EQ-5D) (baseline and 1 and 2 weeks after the baseline) Exercise adherence (1 week after the baseline) Effect of intervention (The Global rating recovery scale) (1 and 2 weeks after the baseline)	—

Measure

Time frame

Subjective difficulty of the Abdominal Hollowing (The Rating Scale Mental Effort)(baseline and 1 and 2 weeks after the baseline) Pain intensity (The P4) (baseline and 1 and 2 weeks after the baseline) Disability (The Oswestry Disability index)(baseline and 1 and 2 weeks after the baseline) Quality of life (The EQ-5D) (baseline and 1 and 2 weeks after the baseline) Exercise adherence (1 week after the baseline) Effect of intervention (The Global rating recovery scale) (1 and 2 weeks after the baseline)

—

Countries

Japan

Contacts

Public ContactHiroshi Takasaki

Saitama Prefectural University Physical Therapy

takasaki-hiroshi@spu.ac.jp0489734706

Outcome results

None listed

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