Cardiopulmonary Baroreflexes in Humans

Mark, Allyn L.; Mancia, Giuseppe

doi:10.1002/cphy.cp020321

Cited by 109 publications

(89 citation statements)

References 103 publications

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“…While pharmacological interventions undoubtedly induce a more pronounced range in DBP, such techniques may alter intracardiac pressure and impact on cardiopulmonary receptor function [30]. Our results were expressed as BP sensitivity for occurrence of sympathetic bursts.…”

Section: Discussionmentioning

confidence: 99%

Sympathetic and cardiac baroreflex function in panic disorder

Lambert

Thompson

Schlaich

et al. 2002

Journal of Hypertension

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Section: Discussionmentioning

confidence: 99%

Sympathetic and cardiac baroreflex function in panic disorder

Lambert

Thompson

Schlaich

et al. 2002

Journal of Hypertension

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“…3 -l3 ' 14 However, the possible role of such differences in the hemodynamic changes observed during orthostasis has been poorly investigated in patients with hypertension.…”

mentioning

confidence: 99%

Tilt test in essential hypertension. Differential responses in heart rate and vascular resistance.

London¹,

Weiss²,

Pannier³

et al. 1987

Hypertension

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SUMMARY Changes in hemodynamic parameters following 50-degree head-up tilt were studied in a population of 56 men, including 35 subjects with sustained essential hypertension and 21 agematched normotensive controls. The increase in heart rate following tilt was similar in both groups and exhibited the same reduction in response with age. The increase in vascular resistance following tilt was strongly and positively correlated with both age and baseline vascular resistance. The latter finding was observed mainly in hypertensive subjects. The study provided evidence that differentiated responses of heart rate and vascular resistance may be observed following orthostasis. In both normal and hypertensive subjects, the age dependence of heart rate response possibly reflected differences in baroreceptor reflex control of parasympathetic and sympathetic activity. In hypertensive subjects, the vascular response was amplified with age and baseline vascular resistance, suggesting a role for structural changes of the vessels in the increased vascular response. (Hypertension 10: 29-34, 1987) KEY WORDS • essential hypertension • baroreceptor reflex mechanisms • orthostasis W HEN a normal person changes from the recumbent to the erect position, the central blood volume and heart volume are decreased and the cardiac output (CO) is reduced by about 20%.'" 3 Diminished CO accompanying reduced peripheral resistance should result in a sharp fall in arterial pressure unless reflex cardioacceleration and vasoconstriction occur at the same time because of the baroreceptor reflex compensatory mechanisms.3 For that reason, baroreceptor reflex mechanisms may be adequately evaluated using passive tilting on a tilt table from the horizontal to the erect position, 4 " 8 during which muscular pumping action of the legs 9 is minimal or absent.The mechanisms resulting in the changes in heart rate and systemic vascular resistance on standing are complex, involving baroreceptors of the high and the low pressure systems and even ergoreceptors in the skeletal muscles.3 ' ltM5 Furthermore, adequate studies

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“…The half squat involves the recruitment of a bigger muscle group, promoting compression of great part of the vascular tree of lower limbs 21 . The muscle relaxation which occurs immediately after the end of this exercise produces heart rate reduction 20 , promoting deactivation of the cardiopulmonary reflex 22 and of the arterial baroreflex control 23 . In order to compensate this hypotensor stimulus, increase of sympathetic activity takes place 20 and, consequently, of HR, as demonstrated in some individuals in the present study.…”

Section: Recovery (S)mentioning

confidence: 99%

Influência do grupamento muscular na recuperação da frequência cardíaca após o exercício resistido

Peçanha

Vianna

Sousa

et al. 2013

Rev Bras Med Esporte

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INTRODUÇÃO: O exercício resistido (ER) é um tipo de exercício amplamente praticado, sendo recomendado para a manutenção ou aprimoramento da força e massa musculares e utilizado com fins estéticos e de saúde. Apesar disto, pouco se sabe sobre o impacto deste tipo de exercício sobre o controle autonômico cardíaco, tampouco da influência do grupamento muscular nesta resposta. OBJETIVO: Verificar a influência do grupamento muscular utilizado durante o ER, na recuperação da frequência cardíaca (REC-FC) pós-exercício. MÉTODOS: Participaram deste estudo 14 indivíduos do sexo masculino (27,4 ± 6,1 anos; 79,4 ± 10,4 kg; 1,77 ± 0,1 m; 10,5 ± 4,6 %G) experientes na prática de ER. O protocolo experimental constou da realização de teste e reteste de 1RM nos exercícios supino horizontal e meio agachamento para determinação da força dinâmica máxima e execução do número máximo de repetições a 80% de 1RM com avaliação da REC-FC durante um minuto pós-exercício. RESULTADOS: Os resultados encontrados indicam menor REC-FC nos 10, 20, 30 e 40 segundos após o exercício meio agachamento em comparação ao supino horizontal. CONCLUSÃO: Os achados confirmam a influência do grupamento muscular na resposta autonômica cardíaca pós-esforço, no ER.

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Cardiopulmonary Baroreflexes in Humans

Cited by 109 publications

References 103 publications

Sympathetic and cardiac baroreflex function in panic disorder

Sympathetic and cardiac baroreflex function in panic disorder

Tilt test in essential hypertension. Differential responses in heart rate and vascular resistance.

Influência do grupamento muscular na recuperação da frequência cardíaca após o exercício resistido

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