Exploring hamstrings flexion-relaxation phenomenon in experimental low back pai

Not Applicable

• Conditions: ow back pain; Low back pain; Musculoskeletal - Other muscular and skeletal disorders

• Registration Number: ACTRN12613000752763
• Lead Sponsor: nitec

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2013-07-05
• Last Update Posted: 13 January 2020

Recruitment & Eligibility

• Status: ot yet recruiting
• Sex: All
• Target Recruitment: 10

Inclusion Criteria

Age 18-55 years
Ability to give written, informed consent

Exclusion Criteria

Orthopedic or neurological disorders of low back or thigh
Pain on the day of testing
Use of pain medication on the day of testing
Recent trauma to lower back or leg
Unusually elevated hamstring muscle activity which manifests as limited lumbopelvic rotation (assessed on case-by-case basis)
Any pain related condition may be grounds for exclusion
Score >24 on Pain Catastrophising Scale (PCS)
Somatic hypervigilance as indicated by score >7 on Modified Somatic Pain Questionnnaire (MSPQ)
Diagnosis of hemophilia or other clotting disorders
Allergy to latex products
Non New Zealand citizens or residents (due to insurance issues)

Study & Design

• Study Type: Interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Measurement of electrical activity (EMG) in hamstring muscles during trunk flexion with experimental pain to lumbar erector spinae[At each phase of trunk flexion before and after injection of hypertonic saline];Range of lumbar flexion by taking photographs from side and measuring angle of lumbar flexion by using a software (Image J)[While standing erect and in full flexion position both before and after injection of hypertonic saline]

Secondary Outcome Measures

Name	Time	Method
nil[nil]