Effect of the Cognitive Strategy During Trunk Muscle Endurance in Patients With Lumbar Hernia Surgery

Study Overview
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Brief Summary
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Muscle endurance will be evaluated on two exercises: Biering-Sorensen Test and Prone Plank Test. Each test will be assessed in different days following a randomized order.

Detailed Description
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All patients will be encouraged to achieve the maximum time to task failure, stopped only by muscular fatigue or pain precluding to maintain the position. Each exercise will perform under two conditions. On the control condition, the patients will perform both tests without any cognitive condition, while on the experimental condition they will be instructed to perform both tests while performing a mathematical subtracting task (starting at 300, by sevens). The starting condition will be randomly assigned with a 5-minute rest prior to the next condition. Time to task failure and pain perception using a visual analog scale will be assessed.

Official Title
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Effect of the Cognitive Strategy During Trunk Muscle Endurance in Patients With Lumbar Hernia Surgery

Conditions
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Low Back Pain, Disk Herniated Lumbar

Intervention / Treatment
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* Diagnostic Test: Biering-Sorensen Test and Prone Plank Test


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Age between 20-50 years. Surgery of lumbar discectomy or lumbar arthrodesis with at least 3 months of evolution. Acceptance to participate in the study. Exclusion Criteria: History of previous surgery in the lower extremities. Recent trauma (<6 months). Use of corticosteroids. Pregnancy. Cauda equina syndrome. Marrow-level lesions. Progressive neurological involvement. History of rheumatological diseases. Inability to perform the test measurement.

Ages Eligible for Study
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Minimum Age: 20 Years
Maximum Age: 50 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Health Services Research
Allocation: Randomized
Intervention Model: Crossover Assignment
Interventional Model Description: Each test will be assessed in different days following a randomized order.
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Cognitive Strategy<br>Performing a mathematical subtracting task (starting at 300, by sevens) | Diagnostic Test: Biering-Sorensen Test and Prone Plank Test<br>* All patients will be encouraged to achieve the maximum time to task failure, stopped only by muscular fatigue or pain precluding to maintain the position.<br>|
| Active Comparator: Control<br>The patients will perform both tests without any cognitive condition | Diagnostic Test: Biering-Sorensen Test and Prone Plank Test<br>* All patients will be encouraged to achieve the maximum time to task failure, stopped only by muscular fatigue or pain precluding to maintain the position.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Time to task failure | Time in seconds from 0 to failure, where higher values represent a best muscle endurance. | through study completion, an average of 2 week | 
| Pain evaluation | Pain will be measured by the Visual Analog Scale for pain (VAS) from 0 to 10, where higher values represent a worse outcome. | through study completion, an average of 2 week | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Pain Interference: Kinesiophobia | Kinesiophobia will be evaluated by Tampa Scale for Kinesiophobia (TSK-11SV) (Spanish adaptation. Gómez-Pérez, López-Martínez y Ruiz-Párraga, 2011). Scoring: Items are summed, with a total score from 11-44 and higher values represent a worse outcome (more pain interference in behavior). | through study completion, an average of 2 week | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Muscle endurance, Biering-Sorensen Test, Prone Plank Test., Dual task, time to failure