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Low back pain development response to sustained trunk axial twisting.

Xinhai Shan1, Xiaopeng Ning, Zhentao Chen

  • 1Biomechanics Laboratory, College of Physical Education, Shandong Normal University, 88 Wenhua East Road, Jinan, 250014, Shandong, China, xhshan_jn@aliyun.com.

European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society
|April 25, 2013
PubMed
Summary

Sustained trunk axial twisting causes significant spinal rotation and increases low back pain perception. This may elevate the risk of developing low back pain due to reduced passive tissue tension.

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Area of Science:

  • Biomechanics
  • Musculoskeletal Health
  • Spinal Physiology

Background:

  • Low back pain is a prevalent condition with multifactorial causes.
  • Trunk axial twisting is a common movement in daily activities and sports.
  • The specific impact of sustained trunk axial twisting on low back pain development requires further investigation.

Purpose of the Study:

  • To investigate the effect of sustained trunk axial twisting on the development of low back pain.
  • To assess changes in trunk rotational creep and pain perception following axial twisting.
  • To evaluate the impact on erector spinae muscle activity during lumbar movements.

Main Methods:

  • Sixteen pain-free male university students participated.
  • A 50 Nm torsion moment was applied for 10 minutes to induce sustained trunk axial twisting.
  • Trunk rotational creep, visual analog scale (VAS) pain scores, and erector spinae electromyography were measured before and after twisting.

Main Results:

  • Significant trunk rotational creep (10.5°) and increased VAS scores (mean 45 mm) were observed.
  • Erector spinae muscles showed increased activity duration during flexion and extension post-twisting.
  • These findings indicate altered spinal mechanics and muscle response following sustained axial twisting.

Conclusions:

  • Sustained trunk axial twisting leads to significant trunk rotational creep and increased low back pain.
  • The observed changes suggest a potential decrease in the tension ability of passive spinal tissues.
  • This may indicate an elevated risk for developing low back pain after sustained trunk axial twisting.