Comparison of the Intramuscular Circulation of Lumbar Multifidus in Subjects with and without Low Back Pain in Trunk Extension and Extended Exercise Position

Comparison of the Intramuscular Circulation of Lumbar Multifidus in Subjects with and without Low Back Pain in Trunk Extension and Extended Exercise Position. - Comparison of the Intramuscular Circulation of Lumbar Multifidus in Subjects with and without Low Back Pain in Trunk Extension and Extended Exercise Position

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000049798

Enrollment

Registered

2023-05-12

Start date

2022-12-30

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

low back pain

Interventions

Subjects will be asked to move into either trunk extension or extended exercise position from starting (neutral) position to maintain these positions for 10 seconds.

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Subjects with LBP for more than 3 months

Exclusion criteria

Exclusion criteria: a history of lumbar surgery, immunological diseases (rheumatism, etc.), and neurological symptoms of the lower extremities.

Design outcomes

Primary

Measure	Time frame
Near-infrared spectroscopy (NIRS) will be used to non-invasively measure total hemoglobin (Total-Hb), oxygenated hemoglobin (Oxy-Hb), and deoxygenated hemoglobin (Deoxy-Hb) of lumbar multifidus at L5-S1 segment. All measurements will be obtained in neutral position, 20 degree of trunk extended position, and extended exercise position in standing. Subjects will be asked to move into either trunk extension or extended exercise position from starting (neutral) position.The measurements of Total-Hb and Oxy-Hb were compared at -3 seconds (neutral position) and 10 seconds of in each trunk extended and extended exercise position in standing.	—

Measure

Time frame

Near-infrared spectroscopy (NIRS) will be used to non-invasively measure total hemoglobin (Total-Hb), oxygenated hemoglobin (Oxy-Hb), and deoxygenated hemoglobin (Deoxy-Hb) of lumbar multifidus at L5-S1 segment. All measurements will be obtained in neutral position, 20 degree of trunk extended position, and extended exercise position in standing. Subjects will be asked to move into either trunk extension or extended exercise position from starting (neutral) position.The measurements of Total-Hb and Oxy-Hb were compared at -3 seconds (neutral position) and 10 seconds of in each trunk extended and extended exercise position in standing.

—

Countries

Japan

Contacts

Public Contactmasaru kanda

Niigata University of Health and Welfare Dept. of Prosthetics, Orthotics and Assistive Technology

kanda@nuhw.ac.jp0252574621

Outcome results

None listed

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