The Brain Activity Changes in the Development of Chronic Low Back Pain

Sponsor

National Yang Ming University (Other)

Overall Status

Not yet recruiting

CT.gov ID

NCT05352594

Collaborator

(none)

Enrollment

Location

Anticipated Duration (Months)

3.2

Patients Per Site Per Month

Study Details

Study Description

Brief Summary

The purpose of this longitudinal exploratory prospective study is to investigate the brain changes in the development of chronic low back pain.

Condition or Disease	Intervention/Treatment	Phase
Chronic Pain Low Back Pain

Detailed Description

Background and Purpose: Chronic low back pain (cLBP) is an adverse symptom not only to individuals but also to society. It impacts negatively on multiple aspects, such as physical activities, functional ability, quality of life and psychological status. Moreover, cLBP causes economic burden to both individuals and society. However, not all low back pain progresses to chronic condition. Cross-sectional studies have shown brain activated differently in people with cLBP as compared with healthy ones during rest and movement. In addition, lower cortical excitability or stronger functional connections between medial prefrontal cortex and nucleus accumbens were observed in those becoming cLBP according to previous longitudinal studies. Also, image studies have shown a shift in brain regions from pain related areas to those that control emotion and memory. According to these results, the brain activity is related to the persistence of pain. However, how brain activity changes during the chronicity of low back pain is still not fully understood. Therefore, the purpose of present study is to compare the brain changes in people with LBP with or without pain chronicity.

Methods: This is a longitudinal exploratory prospective study. Demographic data will be collected at baseline. The outcomes will be measured at entry of the study and at 6 months post-pain. Outcomes include pain intensity which is rated by Numerical rating scale(NRS), and brain activities which is recorded by electroencephalography (EEG) during resting and movement conditions.

Statistical analysis: According to the NRS at 6 month post-pain, the participants whose NRS sore ≥ 2 will be grouped in the cLBP group and those NRS ≤ 1 will be grouped in the recovered low back pain (rLBP) group. Two-way ANOVA with repeated-measures and Tukey's post hoc test will be used to analyze the differences between time and between groups. The changes of pain intensity during movement will be used as confounder for the analysis. Statistical significance is set at p<0.05.

Study Design

Study Type:

Observational

Anticipated Enrollment :

42 participants

Observational Model:

Cohort

Time Perspective:

Prospective

Official Title:

The Brain Activity Changes in Persons With Low Back Pain: From Subacute to Chronic

Anticipated Study Start Date :

Apr 1, 2022

Anticipated Primary Completion Date :

May 1, 2023

Anticipated Study Completion Date :

May 1, 2023

Arms and Interventions

Arm	Intervention/Treatment
Chronic Low Back Pain The participants whose low back pain intensity score ≥2 by numeric pain rating scale at 6-month follow-up.
Recovered Low Back Pain The participants whose low back pain intensity score <1 by numeric pain rating scale at 6-month follow-up.

Outcome Measures

Primary Outcome Measures

Pain Intensity at the enrollment [at the enrollment]
The average pain intensity in the past week will be measured by numeric rating scale (NRS). NRS is a 11-point rating scale (0 represents "no pain" and 10 represents "worst pain imaginable").
Pain Intensity at 6-month follow-up [at 6-month follow-up]
The average pain intensity in the past week will be measured by numeric rating scale (NRS). NRS is a 11-point rating scale (0 represents "no pain" and 10 represents "worst pain imaginable").
Brain Activity Change from enrollment to 6-month follow-up [at the enrollment and 6-month follow-up]
Participants' brain activity will be measured by electroencephalography (EEG) during functional reaching activity to assess the brain changes.
Pain intensity during functional reaching task at the enrollment [at the enrollment]
The pain intensity during functional reaching task will be measured by numeric rating scale (NRS). NRS is a 11-point rating scale (0 represents "no pain" and 10 represents "worst pain imaginable").
Pain intensity during functional reaching task at 6-month follow-up [at 6-month follow-up]
The pain intensity during functional reaching task will be measured by numeric rating scale (NRS). NRS is a 11-point rating scale (0 represents "no pain" and 10 represents "worst pain imaginable").

Eligibility Criteria

Criteria

Ages Eligible for Study:

20 Years and Older

Sexes Eligible for Study:

All

Accepts Healthy Volunteers:

Inclusion Criteria:

Age≧ 20 y/o
1st episode of low back pain
Pain in the region of the lower back (bound by the thoracolumbar junction superiorly, and by the gluteal fold inferiorly)
Pain duration <1 month
Average pain intensity in the past 7 days is ≧3/10 (Numeric Rating Scale)
Mini-Mental State Examination ≧ 24

Exclusion Criteria:

Pain onset duration < 7 days
Pain area other than the specify area
Any systematic disease, fracture or cancer
Present any neurological sign related to pain
Infection
Received any brain or spine surgeries, hip arthroplasty or any other kind of surgeries in the past 3 months
Diagnosed with any neurological or psychological disease