Correlation between K complex, periodic leg movements (PLM), and myoclonus during sleep in paraplegic adults before and after an acute physical activity

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dc.contributor.authorMello, Marco Tulio de [UNIFESP]
dc.contributor.authorSilva, Antônio Carlos [UNIFESP]
dc.contributor.authorRueda, A. D.
dc.contributor.authorPoyares, Dalva [UNIFESP]
dc.contributor.authorTufik, Sergio [UNIFESP]
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.date.accessioned2016-01-24T12:30:19Z
dc.date.available2016-01-24T12:30:19Z
dc.date.issued1997-04-01
dc.description.abstractK complex is the characteristic wave of stage II of sleep. the relationship between periodic limb movements (PLM) and the restless legs syndrome (RLS), and the incidence of K complexes and alpha activity has been previously described. the aim of the present study was to evaluate the effect of an acute physical activity upon K complex, PLM, and myoclonus during sleep in individuals who were paraplegic. We evaluated 84 polysomnograms from 28 volunteers with a spinal cord injury at the level of T7-T12, obtained during three consecutive nights. On day 3, the volunteers were submitted to a test of maximum effort (manual cycloergometer, with the equipment Cybex Met 300, with a progressive load increase of 12.5 w, every 2 min). the analysis of the polysomnographic recordings showed a positive correlation between the incidence of K complex and limb movements on nights 1, 2 and 3. Similarly, a correlation between the incidence of K complex and myoclonus was observed on nights 1, 2 and 3. An increased incidence of the total K complex was seen on night 3, 36 h after the test of maximum effort. Both total K complex and K complex/h were reduced on night 2, compared to basal recording (night 1). There was a reduction of sleep latency on night 2, whereas total sleeping time increased progressively on night 3, as well as REM phase on nights 2 and 3. These findings indicate that physical activity can affect or modulate the incidence of K complex and suggest that a positive correlation between PLM and K complex may occur in those who are paraplegic from a spinal cord injury. in conclusion, sleep can be consolidated after physical activity.en
dc.description.affiliationUniversidade Federal de São Paulo,DEPT PSYCHOBIOL,São Paulo,BRAZIL
dc.description.affiliationUniversidade Federal de São Paulo,DEPT PHYSIOL,São Paulo,BRAZIL
dc.description.affiliationUnifespUniversidade Federal de São Paulo,DEPT PSYCHOBIOL,São Paulo,BRAZIL
dc.description.affiliationUnifespUniversidade Federal de São Paulo,DEPT PHYSIOL,São Paulo,BRAZIL
dc.description.sourceWeb of Science
dc.format.extent248-252
dc.identifierhttp://dx.doi.org/10.1038/sj.sc.3100408
dc.identifier.citationSpinal Cord. Basingstoke: Stockton Press, v. 35, n. 4, p. 248-252, 1997.
dc.identifier.doi10.1038/sj.sc.3100408
dc.identifier.issn1362-4393
dc.identifier.urihttp://repositorio.unifesp.br/handle/11600/25707
dc.identifier.wosWOS:A1997WR95300011
dc.language.isoeng
dc.publisherStockton Press
dc.relation.ispartofSpinal Cord
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectsleepen
dc.subjectK complexen
dc.subjectperiodic leg movementsen
dc.subjectmyoclonus paraplegicen
dc.subjectphysical activityen
dc.titleCorrelation between K complex, periodic leg movements (PLM), and myoclonus during sleep in paraplegic adults before and after an acute physical activityen
dc.typeinfo:eu-repo/semantics/article
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