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| ID | Type | Description | Link |
|---|---|---|---|
| 2013-A01379-36 | Other Identifier | ANSM |
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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).
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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Group 1 | Six groups are created in order to randomized the order of interventions. In group 1, the order of interventions is as follows:
2 minutes of rest and walking occurs between interventions. The above-mentioned exercises (1, 2 & 3) are performed on day 0, day 7 and week 6 for patients, and only on day 0 for healthy volunteers. |
| |
| Group 2 | Six groups are created in order to randomized the order of interventions. In group 2, the order of interventions is as follows:
2 minutes of rest and walking occurs between interventions. The above-mentioned exercises (1, 2 & 3) are performed on day 0, day 7 and week 6 for patients, and only on day 0 for healthy volunteers. |
| |
| Group 3 | Six groups are created in order to randomized the order of interventions. In group 3, the order of interventions is as follows:
2 minutes of rest and walking occurs between interventions. The above-mentioned exercises (1, 2 & 3) are performed on day 0, day 7 and week 6 for patients, and only on day 0 for healthy volunteers. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Flexion-extension in the sagittal plane | Other | 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. |
| Measure | Description | Time Frame |
|---|---|---|
| the Lyapunov exponent (lmax, an indicator of local dynamic stability) | for flexion-extension movements The maximum Lyapunov exponent (lmax) is used to characterise local dynamic stability as in Rosenstein et al 1993 and Dingwell & Kang 2007. | Day 0 (baseline) |
| the Lyapunov exponent (lmax, an indicator of local dynamic stability) | for rotational movements. The maximum Lyapunov exponent (lmax) is used to characterise local dynamic stability as in Rosenstein et al 1993 and Dingwell & Kang 2007. | Day 0 (baseline) |
| the Lyapunov exponent (lmax, an indicator of local dynamic stability) | for complex movements. The maximum Lyapunov exponent (lmax) is used to characterise local dynamic stability as in Rosenstein et al 1993 and Dingwell & Kang 2007. | Day 0 (baseline) |
| Measure | Description | Time Frame |
|---|---|---|
| the Lyapunov exponent (lmax, an indicator of local dynamic stability) | for flexion-extension movements. The maximum Lyapunov exponent (lmax) is used to characterise local dynamic stability as in Rosenstein et al 1993 and Dingwell & Kang 2007. | day 7 |
| the Lyapunov exponent (lmax, an indicator of local dynamic stability) |
| Measure | Description | Time Frame |
|---|---|---|
| Sex | (male/female) | baseline (day 0) |
| Age | (years) | baseline (day 0) |
General inclusion criteria:
Inclusion criteria for low back pain patients:
General exclusion criteria:
Exclusion criteria for low back pain patients:
Exclusion criteria for healthy volunteers:
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Patients will be recruited during consultations in the department of Physical Medicine and Rehabilitation at the Nîmes University Hospital for lower back (lumbar) pain. The study population will include patients with chronic low back pain (lasting for more than 6 months and not postoperative).
Healthy volunteers will be recruited at the Faculty of Medicine and the University Hospital of Nîmes.
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| Name | Affiliation | Role |
|---|---|---|
| Arnaud Dupeyron, MD, PhD | Centre Hospitalier Universitaire de NÄ«mes | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| CHRU de Nîmes - Hôpital Universitaire Carémeau | Nîmes | 30029 | France |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 33157419 | Result | Graham RB, Dupeyron A, van Dieen JH. Between-day reliability of IMU-derived spine control metrics in patients with low back pain. J Biomech. 2020 Dec 2;113:110080. doi: 10.1016/j.jbiomech.2020.110080. Epub 2020 Oct 23. |
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| ID | Term |
|---|---|
| D017116 | Low Back Pain |
| ID | Term |
|---|---|
| D001416 | Back Pain |
| D010146 | Pain |
| D009461 | Neurologic Manifestations |
| D012816 | Signs and Symptoms |
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| ID | Term |
|---|---|
| D012399 | Rotation |
| ID | Term |
|---|---|
| D009038 | Motion |
| D055585 | Physical Phenomena |
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| Group 4 | Six groups are created in order to randomized the order of interventions. In group 4, the order of interventions is as follows:
2 minutes of rest and walking occurs between interventions. The above-mentioned exercises (1, 2 & 3) are performed on day 0, day 7 and week 6 for patients, and only on day 0 for healthy volunteers. |
|
| Group 5 | Six groups are created in order to randomized the order of interventions. In group 5, the order of interventions is as follows:
2 minutes of rest and walking occurs between interventions. The above-mentioned exercises (1, 2 & 3) are performed on day 0, day 7 and week 6 for patients, and only on day 0 for healthy volunteers. |
|
| Group 6 | Six groups are created in order to randomized the order of interventions. In group 6, the order of interventions is as follows:
2 minutes of rest and walking occurs between interventions. The above-mentioned exercises (1, 2 & 3) are performed on day 0, day 7 and week 6 for patients, and only on day 0 for healthy volunteers. |
|
|
| Rotation in a transverse plane | Other | 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. |
|
| Complex movement in three dimensions | Other | 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. |
|
for flexion-extension movements. The maximum Lyapunov exponent (lmax) is used to characterise local dynamic stability as in Rosenstein et al 1993 and Dingwell & Kang 2007. |
| week 6 |
| the Lyapunov exponent (lmax, an indicator of local dynamic stability) | for rotational movements. The maximum Lyapunov exponent (lmax) is used to characterise local dynamic stability as in Rosenstein et al 1993 and Dingwell & Kang 2007. | day 7 |
| the Lyapunov exponent (lmax, an indicator of local dynamic stability) | for rotational movements. The maximum Lyapunov exponent (lmax) is used to characterise local dynamic stability as in Rosenstein et al 1993 and Dingwell & Kang 2007. | week 6 |
| the Lyapunov exponent (lmax, an indicator of local dynamic stability) | for complex movements. The maximum Lyapunov exponent (lmax) is used to characterise local dynamic stability as in Rosenstein et al 1993 and Dingwell & Kang 2007. | day 7 |
| the Lyapunov exponent (lmax, an indicator of local dynamic stability) | for complex movements. The maximum Lyapunov exponent (lmax) is used to characterise local dynamic stability as in Rosenstein et al 1993 and Dingwell & Kang 2007. | week 6 |
| weight (kg) |
| baseline (day 0) |
| Height (cm) | baseline (day 0) |
| D013568 |
| Pathological Conditions, Signs and Symptoms |