Abstract:The aim of this study is to compare the response of interleukin-6 (IL-6) and soluble tumor necrosis factor alpha receptor 1 (s-TNFr1) to two submaximal intensities of exercise in individuals with heart failure (HF). Thirty-two HF individuals aged 45.53 ± 9.41 years, classes II and III of the New York Heart Association (NYHA) classification underwent two sessions of exercise at low and moderate intensities with blood analysis at baseline, exercise and after exercise. The differences were evaluated by Friedman t… Show more
“…Several pro-inflammatory mediators have been shown to increase in response to exercise in a dose-dependent manner, depending on exercise intensity or duration (Nieman , et al 2012, Pereira , et al 2012). Despite anecdotal concerns that acute exercise may trigger vaso-occlusive pain in SCA through exacerbation of underlying inflammation and endothelial activation, no previous studies have examined the acute phase response to high intensity exercise in children with SCA.…”
Section: Discussionmentioning
confidence: 99%
“…In general, a single bout of aerobic and resistance exercise is associated with an acute phase response characterized by increases in WBC count and various pro-inflammatory cytokines, including sVCAM, IL6, CRP and D-dimer (Smith et al, 2000;Signorelli et al, 2003;Kasapis & Thompson, 2005). Several pro-inflammatory mediators have been shown to increase in response to exercise in a dose-dependent manner, depending on exercise intensity or duration (Nieman et al, 2012;Pereira et al, 2012). Despite anecdotal concerns that acute exercise may trigger vaso-occlusive pain in SCA through exacerbation of underlying inflammation and endothelial activation, no previous studies have examined the acute phase response to high intensity exercise in children with SCA.…”
Summary
Although individuals with sickle cell anaemia (SCA) have elevated baseline inflammation and endothelial activation, the acute phase response to maximal exercise has not been evaluated among children with SCA. We measured the acute phase response to maximal exercise testing for soluble vascular cell adhesion molecule (sVCAM) as well as interleukin 6 (IL6), total white blood cell count (WBC), C-reactive protein (CRP) and D-dimer in 60 children with SCA and 30 controls at baseline, immediately after, and 30, 60 and 120 min following exercise. Despite higher baseline levels of all biomarkers except CRP, the acute phase response from baseline to immediately after exercise was significantly greater in subjects versus controls for CRP (2.1 vs. 0.2 mg/l, p = 0.02) and D-dimer (160 vs. 10 μg/l , p < 0.01) only. Similar between-group trends were observed over time for all biomarkers, including sVCAM, IL6, total WBC, CRP and D-dimer. Lower fitness, defined by peak oxygen consumption (VO2), was independently associated with greater acute phase responses to exercise for sVCAM. Our results suggest maximal exercise may not be associated with any greater escalation of endothelial activation or inflammation in SCA and provide preliminary biomarker evidence for the safety of brief, high-intensity physical exertion in children with SCA.
“…Several pro-inflammatory mediators have been shown to increase in response to exercise in a dose-dependent manner, depending on exercise intensity or duration (Nieman , et al 2012, Pereira , et al 2012). Despite anecdotal concerns that acute exercise may trigger vaso-occlusive pain in SCA through exacerbation of underlying inflammation and endothelial activation, no previous studies have examined the acute phase response to high intensity exercise in children with SCA.…”
Section: Discussionmentioning
confidence: 99%
“…In general, a single bout of aerobic and resistance exercise is associated with an acute phase response characterized by increases in WBC count and various pro-inflammatory cytokines, including sVCAM, IL6, CRP and D-dimer (Smith et al, 2000;Signorelli et al, 2003;Kasapis & Thompson, 2005). Several pro-inflammatory mediators have been shown to increase in response to exercise in a dose-dependent manner, depending on exercise intensity or duration (Nieman et al, 2012;Pereira et al, 2012). Despite anecdotal concerns that acute exercise may trigger vaso-occlusive pain in SCA through exacerbation of underlying inflammation and endothelial activation, no previous studies have examined the acute phase response to high intensity exercise in children with SCA.…”
Summary
Although individuals with sickle cell anaemia (SCA) have elevated baseline inflammation and endothelial activation, the acute phase response to maximal exercise has not been evaluated among children with SCA. We measured the acute phase response to maximal exercise testing for soluble vascular cell adhesion molecule (sVCAM) as well as interleukin 6 (IL6), total white blood cell count (WBC), C-reactive protein (CRP) and D-dimer in 60 children with SCA and 30 controls at baseline, immediately after, and 30, 60 and 120 min following exercise. Despite higher baseline levels of all biomarkers except CRP, the acute phase response from baseline to immediately after exercise was significantly greater in subjects versus controls for CRP (2.1 vs. 0.2 mg/l, p = 0.02) and D-dimer (160 vs. 10 μg/l , p < 0.01) only. Similar between-group trends were observed over time for all biomarkers, including sVCAM, IL6, total WBC, CRP and D-dimer. Lower fitness, defined by peak oxygen consumption (VO2), was independently associated with greater acute phase responses to exercise for sVCAM. Our results suggest maximal exercise may not be associated with any greater escalation of endothelial activation or inflammation in SCA and provide preliminary biomarker evidence for the safety of brief, high-intensity physical exertion in children with SCA.
“…Outros métodos de treinamento têm sido utilizados como o treinamento complementar de músculos inspiratórios que pode ser indicado naqueles pacientes com IC que apresentam fraqueza da musculatura respiratória (> 70% da pressão inspiratória máxima predita) [70][71][72] ; pilates 73,74 ; treino intervalado e contínuo 66,75,76 ; eletroestimulação 77 ; e hidroterapia 78,79 . Intensidades diferentes de exercício podem ter ação diferente na fisiopatologia da IC 80 . Dentre os mecanismos de ação de alguns desses métodos de reabilitação, inclui-se a redução da sensibilidade dos quimiorreceptores descrita durante exercício [81][82][83] .…”
Section: Reabilitação E Treinamento Físico (Tabela 10)unclassified
“…Parece haver uma "resposta de fase aguda" em que biomarcadores inflamatórios, incluindo a proteína C reativa e IL-6, aumentam logo após o exercício extenuante e retornam ao basal após alguns dias. 50 O músculo exercitado é uma das fontes de IL-6, a qual acumula no sangue em proporção a intensidade, duração e massa de músculo recrutado no exercício. Ao contrário do que seria esperado, os mecanismos de produção de citocina são independentes da existência de injúria muscular, conforme análise da expressão genética local.…”
Section: Efeitos Do Exercício Nos Biomarcadores Inflamatóriosunclassified
“…Ao contrário do que seria esperado, os mecanismos de produção de citocina são independentes da existência de injúria muscular, conforme análise da expressão genética local. 50 Quanto ao exercício físico crônico, estudos prospectivos observaram que os níveis circulantes de biomarcadores inflamatórios reduzem após três meses de treinamento físico em indivíduos saudáveis e em pacientes com claudicação intermitente e diabetes. [51][52][53] Em pacientes com IC, estudos prévios observaram ausência de mudança nestes biomarcadores em concordância com nossos achados.…”
Section: Efeitos Do Exercício Nos Biomarcadores Inflamatóriosunclassified
Germano Souza pelo acolhimento e apoio. Às funcionárias Ciça, Lourdes, Fatima e Sara do Núcleo de Insuficiência Cardíaca e a Fatima do Núcleo de Transplante pelo suporte especial nos momentos que eu mais precisava. Aos amigos Odilson Silvestre e Wilson Nadruz, pelos conselhos e parceria inigualáveis.
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