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Related Concept Videos

Muscles that Move the Leg01:23

Muscles that Move the Leg

The movement of the legs is facilitated by numerous muscles located within the anterior, medial, and posterior compartments of the thigh.
Anterior Compartment
The quadriceps femoris, the most visible muscle of the anterior compartment, is integral for leg extension and thigh flexion. It is formed by merging four distinct muscles — the vastus lateralis, vastus medialis, vastus intermedius, and rectus femoris. The quadriceps tendon, a shared tendon of the four quadriceps muscles, is affixed to...

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Identifying the Problem Side with Single-Leg Squat and Hamstrings Flexibility for Non-Specific Chronic Low Back Pain.

Boon Chong Kwok1,2, Helen Elizabeth Smith3, Pui Wah Kong2

  • 1Health and Social Sciences (Physiotherapy), Singapore Institute of Technology, Singapore 138683, Singapore.

Medicina (Kaunas, Lithuania)
|September 28, 2024
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Summary

Objective single-leg squat tests and hamstring flexibility measurements can identify the problem side in adults with non-specific chronic low back pain (LBP). These findings offer a more reliable method than subjective clinical assessments.

Keywords:
DMA Clinical Pilateslumbagomotor controlmovement assessmentpostural sway

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Area of Science:

  • Biomechanics
  • Musculoskeletal Health
  • Rehabilitation Science

Background:

  • Non-specific chronic low back pain (LBP) presents challenges as pain and problem sides can be discordant.
  • Clinical Pilates assessment for identifying the problem side in LBP is subjective and requires expertise.

Purpose of the Study:

  • To determine if objective measures of single-leg squat postural control and hamstring flexibility can identify the problem side in adults with non-specific chronic LBP.
  • To compare objective measures with the established Clinical Pilates method for problem side identification.

Main Methods:

  • Forty adults with non-specific chronic LBP underwent single-leg squat postural control and hamstring flexibility assessments.
  • Paired t-tests compared postural sway and flexibility between problem and non-problem sides.
  • Cohen's kappa assessed agreement between objective measures and the Clinical Pilates method.

Main Results:

  • The problem side exhibited altered postural sway (e.g., larger sway path distances) and reduced hamstring flexibility compared to the non-problem side.
  • Overall and anteroposterior sway path distances, terminal knee flexion angle, squat duration, and hamstring flexibility showed moderate to strong agreement with the Clinical Pilates method.

Conclusions:

  • Objective single-leg squat postural sway parameters and hamstring flexibility measurements can reliably identify the problem side in adults with non-specific chronic LBP.
  • These objective measures provide a more consistent and less subjective alternative to current clinical assessments for LBP.