<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="static/style.xsl"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-04-29T04:10:02Z</responseDate><request verb="GetRecord" identifier="oai:repisalud.isciii.es:20.500.12105/23167" metadataPrefix="mets">https://repisalud.isciii.es/rest/oai/request</request><GetRecord><record><header><identifier>oai:repisalud.isciii.es:20.500.12105/23167</identifier><datestamp>2024-11-28T19:44:06Z</datestamp><setSpec>com_20.500.12105_15322</setSpec><setSpec>com_20.500.12105_2051</setSpec><setSpec>col_20.500.12105_16967</setSpec></header><metadata><mets xmlns="http://www.loc.gov/METS/" xmlns:doc="http://www.lyncode.com/xoai" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" ID="&#xa;&#x9;&#x9;&#x9;&#x9;DSpace_ITEM_20.500.12105-23167" TYPE="DSpace ITEM" PROFILE="DSpace METS SIP Profile 1.0" xsi:schemaLocation="http://www.loc.gov/METS/ http://www.loc.gov/standards/mets/mets.xsd" OBJID="&#xa;&#x9;&#x9;&#x9;&#x9;hdl:20.500.12105/23167">
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                  <mods:namePart>Sitges, Carolina</mods:namePart>
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                  <mods:namePart>Velasco-Roldán, Olga</mods:namePart>
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                  <mods:namePart>Crespí-Palmer, Jaume</mods:namePart>
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                  <mods:namePart>García-Dopico, Nuria</mods:namePart>
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                  <mods:namePart>Segur-Ferrer, Joan</mods:namePart>
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                  <mods:namePart>González-Roldán, Ana María</mods:namePart>
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                  <mods:namePart>Montoya, Pedro</mods:namePart>
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                  <mods:dateAccessioned encoding="iso8601">2024-09-18T06:42:07Z</mods:dateAccessioned>
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                  <mods:dateIssued encoding="iso8601">2021</mods:dateIssued>
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               <mods:identifier type="citation">Sitges C, Velasco-Roldan O, Crespi J, Garcia-Dopico N, Segur-Ferrer J, Gonzalez-Roldan AM, et al. Acute Effects of a Brief Physical Exercise Intervention on Somatosensory Perception, Lumbar Strength, and Flexibility in Patients with Nonspecific Chronic Low-Back Pain. J Pain Res. 2021;14:487-500.</mods:identifier>
               <mods:identifier type="issn">1178-7090</mods:identifier>
               <mods:identifier type="other">https://hdl.handle.net/20.500.13003/19417</mods:identifier>
               <mods:identifier type="uri">https://hdl.handle.net/20.500.12105/23167</mods:identifier>
               <mods:identifier type="pubmedID">33633462</mods:identifier>
               <mods:identifier type="doi">10.2147/JPR.S274134</mods:identifier>
               <mods:identifier type="journal">Journal of Pain Research</mods:identifier>
               <mods:identifier type="scopus">2-s2.0-85101859766</mods:identifier>
               <mods:identifier type="wos">625397200001</mods:identifier>
               <mods:identifier type="pui">L2006124836</mods:identifier>
               <mods:abstract>Background: Evidence-based clinical guidelines consider physical exercise one of the best nonpharmacological interventions for low-back pain (LBP), but it is necessary to clarify the exercise-induced hypoalgesia effect of different modalities of exercise in chronic pain populations. Purpose: This study focused on exploring acute changes in tactile and pressure-pain perception and lumbar strength and flexibility in patients with nonspecific chronic LBP (NSCLBP) after performing one of three 20-minute physical exercise modalities. Methods: A total of 81 patients with NSCLBP were pseudorandomly distributed into three groups of 20-minute physical exercise - 1) aerobic (n=21, mean age 42 +/- 9.72 years, nine men), 2) stretching (n=21, mean age 40 +/- 11.37 years, ten men), and 3) strengthening (n=20, mean age 35.80 +/- 11.56 years, ten men) - and 4) a control group (n=19, mean age 38.64 +/- 10.24 years, eight men), and completed self-reported questionnaires during the same period. Tactile and pressure-pain thresholds and isometric lumbar muscle endurance and flexibility were assessed before and after this brief exercise-based intervention. Results: All groups were comparable in terms of sociodemographic and clinical data, cardiovascular capacity, and self-reported data onphysical disability, mood, motivation, psychological response to stimulus properties of physical exercise, and physical activity enjoyment. Our analyses revealed higher tactile sensitivity (p&lt;0.001) and pressure-pain thresholds (p&lt;0.001) at the forefinger than other body locations. We also found lower pain sensitivity (p=0.010) and pressure pain-intensity ratings (p=0.001) and higher lumbar flexibility (p&lt;0.001) after intervention. After calculation of absolute pre-post differences, higher tactile sensitivity was observed at the gluteus medius muscle than the erector spinal muscle only after aerobic intervention (p=0.046). Conclusion: These results add some evidence about different modalities of exercise-induced hypoalgesia in NSCLBP. However, the fact that we also found improvements in the control group limits our conclusions.</mods:abstract>
               <mods:language>
                  <mods:languageTerm authority="rfc3066">eng</mods:languageTerm>
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               <mods:subject>
                  <mods:topic>Low-back pain</mods:topic>
               </mods:subject>
               <mods:subject>
                  <mods:topic>Exercise therapy</mods:topic>
               </mods:subject>
               <mods:subject>
                  <mods:topic>Aerobic exercise</mods:topic>
               </mods:subject>
               <mods:subject>
                  <mods:topic>Flexibility</mods:topic>
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               <mods:titleInfo>
                  <mods:title>Acute Effects of a Brief Physical Exercise Intervention on Somatosensory Perception, Lumbar Strength, and Flexibility in Patients with Nonspecific Chronic Low-Back Pain</mods:title>
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               <mods:genre>research article</mods:genre>
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