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Research Reports |
B Chok, MAppSc(Physiotherapy), PT, is Senior Physiotherapist, Physiotherapy Department, Singapore General Hospital, Outram Rd, Singapore 169608 (gpycsk{at}sgh.gov.sg). Address all correspondence to Ms Chok
R Lee, PhD, PT, is Senior Lecturer, School of Physiotherapy, Faculty of Health Sciences, University of Sydney, Sydney, New South Wales, Australia
J Latimer, PhD, PT, is Lecturer, School of Physiotherapy, Faculty of Health Sciences, University of Sydney
SB Tan, MBBS, MMed, FRCS, FAMS, is Senior Consultant Orthopaedic and Spine Surgeon, Department of Orthopaedic Surgery, Singapore General Hospital
Background and Purpose. Clinicians treating patients with low back pain often use exercise to reduce pain and improve function. The aim of this study was to evaluate the effectiveness of trunk extensor endurance training in reducing pain and decreasing disability in subjects with subacute low back pain (ie, onset of back pain within 7 days to 7 weeks). Subjects and Methods. Patients were randomly assigned to either an experimental group or a control group. A visual analog scale and the Pain Rating Index (PRI) of the McGill Pain Questionnaire (MPQ) were used to obtain baseline measurements of pain. The Roland-Morris Disability Questionnaire (RMDQ) was used to measure disability, and the Sorensen Test was used to measure trunk extensor endurance. Subjects in the experimental group attended exercise sessions 3 times per week for 6 weeks. Subjects in the control group did not do exercises. Both groups were given back care advice and hot packs for 15 minutes, 3 to 5 times per week. Reassessments were carried out at 3 and 6 weeks. Results. There were differences between the 2 groups at 3 weeks with regard to pain intensity during the evaluation session, pain experienced over the preceding 24 hours, the total MPQ PRI, the sensory component of the MPQ PRI, and the RMDQ. At 6 weeks, no differences were found for pain measurements, disability scores, and holding time on the Sorensen Test. Conclusion and Discussion. Trunk extensor endurance training reduced pain and improved function at 3 weeks but resulted in no improvement at 6 weeks when compared with the control group. Endurance exercise is considered to expedite the recovery process for patients with an acute episode of low back pain.
Key Words: Controlled randomized trial • Exercise • Subacute low back pain • Trunk endurance
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