NCT02059317

Evaluation of Dynamic Stability in the Low Back Pain Patient

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 70 (actual)
• Sponsor: Centre Hospitalier Universitaire de Nīmes · Academic / Other
• Sex: All
• Age: 18 Years – 75 Years
• Healthy volunteers: Accepted

Summary

The main objective of this study is to compare on day 0 the maximum Lyapunov exponent (lmax, an indicator of local dynamic stability) of chronic low back pain patients versus that of healthy volunteers matched for age (± 5 years), sex and body mass index (BMI ± 15% of low back pain patients).

Detailed description

The secondary objectives of this study are: To compare lmax in the different experimental conditions within each group (chronic lower back pain patients, healthy volunteers). To compare changes in lmax for low back pain patients at D7 and 6 weeks.

Conditions

• Low Back Pain
• Chronic Low Back Pain

Interventions

Type	Name	Description
OTHER	Flexion-extension in the sagittal plane	The movement required is a flexion - extension where the subject touches a target (adapted to his/her morphology) with both index fingers: the target is positioned in front of the subject, inline with his/her outstretched arms and at knee height. This movement simulates a lifting task without weight. The movement is repeated 30 times with a return to the initial position at a frequency of 0.32Hz.
OTHER	Rotation in a transverse plane	The movement required of the subject is a rotational movement where the subject alternately touches with his/her left and right hands two targets. The latter are positioned horizontally on either side of the subject at shoulder height and at arm's length. The movement is repeated 30 times at a frequency of 0.28 Hz.
OTHER	Complex movement in three dimensions	The subject is required to successively touch 4 targets situated (i) at knee height to the left of the subject, (ii) at shoulder height to the right of the subject, (iii) at shoulder height to the left of the patient, and (iv) at knee height to the right of the patient. The movement is repeated 30 times at a frequency of 0.16 Hz.

Timeline

• Start date: 2015-01-01
• Primary completion: 2016-09-28
• Completion: 2016-09-28
• First posted: 2014-02-11
• Last updated: 2025-11-19

Locations

1 site across 1 country: France