Predictors of pain intensity and Oswestry disability index in prolonged standing service workers with nonspecific chronic low back pain that sub-classified active extension patter

Not Applicable

Completed

• Conditions: Diseases of the musculo-skeletal system and connective tissue

• Registration Number: KCT0002740
• Lead Sponsor: Yonsei University

Brief Summary

To investigate which psychological, postural, mobility, and strength variables contributed most significantly to the degree of low back pain and dysfunction, multiple regression models with a stepwise selection procedure were performed for the 14 independent variables, with visual analogue scale (VAS) and dysfunction as the dependent variable. The determination coefficient (R2) showed the explanatory power for models of regression variables in multiple regression with a stepwise selection procedure. Stepwise multiple-regression analyses were performed to identify variables that contributed significantly to VAS in prolonged standing service workers with non-specific low back pain for active extension pattern. In the stepwise regression analyses, model 5 included hip abductor strength, lumbopelvic stability, pelvic anterior tilting angle, job stress, and hip extension range of motion as predictor variables and accounted for 40.1% of the variance in VAS. For disability, model 2 included hip external rotator strength and age as predictor variables and accounted for 11.9% of the variance in Oswestry disability index (ODI). According to the independent variables, the regression equations were set up using slope and constant values in unstandardized coefficients. The VAS was computed using the regression equation. In ß values, as standardized coefficients of model 5, the following were independent influencing variables on VAS: hip abductor strength (ß =-0.321), lumbopelvic stability (ß =-0.166), pelvic anterior tilting angle (ß =0.241), job stress (ß = 0.199), and hip extension ROM (ß =-0.196). In independent influencing variables on ODI, ß values were hip external rotator strength (ß =-0.300) and age (ß =0.243).

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Last Update Posted: 11 March 2019

Recruitment & Eligibility

• Status: Completed
• Sex: All
• Target Recruitment: 78

Inclusion Criteria

1) LBP for a minimum of 12 weeks
2) Pain in the lumbar regions
3) Clear mechanical basis of disorder: specific postures and movements that aggravate and ease the symptoms, and symptom relief in movements opposite to provocation testing as determined by subjective and objective clinical examination
4) Clinical diagnosis of AEP motor control impairment
5) Symptoms provoked with movements and postures involving extension of lower lumbar spine
6) Symptoms eased by movements into spinal flexion
7) Difficulty of adopting and/or maintaining neutral spine posture, with tendency toward hyperextension of lower lumbar spine

Exclusion Criteria

1) Not fulfilling inclusion criteria
2) Red flags (specific causes of LBP, such as disc prolapse with radicular pain, inflammatory disease, or other serious pathology)
3) Pregnancy/breastfeeding
4) History of spinal surgery
5) Vestibular/visual/neurological dysfunction affecting balance
6) Not able to sit and/or stand from a stool unaided

Study & Design

• Study Type: Observational Study
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Oswestry disability index;Pelvic anterior tiliting angle;Borg rating of perceived exertion scale;Korean occupational stress scale;Passive hip flexion range of motion;Passive hip extension range of motion;Passive knee flexion range of motion;Hip extensor strength;Hip abductor strength;Hip external rotator strength;Hip internal rotator strength;Knee extensor strength;Knee flexor strength

Secondary Outcome Measures

Name	Time	Method
Visual analogue scale