1. Could aerobic exercise applied before constraint-induced movement therapy change circulating molecular biomarkers in chronic post-stroke?
- Author
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García-Salazar, Luisa Fernanda, Pereira, Natalia Duarte, Silva, Erika Shirley Moreira, Ribeiro, Jean Alex Matos, Nagai Ocamoto, Gabriela, Mendes Zambetta, Rafaella, de Oliveira, Simone Garcia, Catai, Aparecida Maria, Borstad, Alexandra, and Russo, Thiago Luiz
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BRAIN-derived neurotrophic factor , *CONSTRAINT-induced movement therapy , *MATRIX metalloproteinases , *AEROBIC exercises , *IRISIN - Abstract
BackgroundObjectiveMethodsResultsConclusionIntegrating aerobic exercise (AE) into rehabilitation programs for post-stroke individuals could enhance motor recovery and cardiovascular health by increasing brain-derived neurotrophic factor (BDNF) and the myokine irisin. Chronic stroke survivors typically exhibit elevated matrix metalloproteinase-9 (MMP-9) activity, which is negatively correlated with steps and time in medium cadence, although the impact of AE on this biomarker remains unclear.To evaluate the effect of high-intensity AE training prior to modified constraint-induced movement therapy (mCIMT) on BDNF and irisin concentration, and on MMP-2 and MMP-9 activity in chronic post-stroke individuals and to associate these results with functional improvements.Nine participants received AE combined with mCIMT for two weeks, while the control group (
n = 7) received mCIMT alone. Manual dexterity and functional capacity were assessed before and after the intervention. Serum samples were analyzed for BDNF, irisin, MMP-2 and MMP-9.There were no significant main effects of assessment, group or interaction on molecular biomarkers. However, the AE group had a significant increase in MMP-9 activity post-intervention (p = .033;d = 0.67). For the Box and Block Test, there were significant main effects of assessment (F [1, 14] = 33.27,p = .000,η p2 = 0.70) and group (F [1, 14] = 5.43,p = .035,η p2 = .28). No correlations were found between biomarkers and clinical assessments.AE prior to mCIMT did not influence circulating BDNF and irisin levels but did induce an acute rise in MMP-9 activity, suggesting potential effects on cardiovascular remodeling in this population. [ABSTRACT FROM AUTHOR]- Published
- 2024
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