Caffeine and physical training: effects on cardiac morphology and cardiovascular response

Ruíz, Roberto José; Ramos, Solange de Paula; Martins‐Pinge, Marli Cardoso; Moraes, Solange Franzói de; Polito, Marcos Doederlein

doi:10.1590/1806-9282.60.01.007

Cited by 7 publications

(4 citation statements)

References 29 publications

(32 reference statements)

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“…In in vivo experiments involving awake or freely moving animals, baseline values are used from sham groups, when the animals, in addition to the implantation of electrodes for continuous ECG recording, are also subjected to other surgical procedures as preparation for the further course of the experiment, but without subsequent targeted experimental intervention. For example, preparation for coronary or femoral artery occlusion (Aires et al, 2017; De La Fuente et al, 2013; Nobre et al, 2006), catheterization (Beckers et al, 2006; Blanco et al, 2015; Fiorino et al, 2012; Krüger et al, 1997, 2000; Mostarda et al, 2009; Müller‐Ribeiro et al, 2017; Quagliotto et al, 2015; Ramaekers et al, 2002; Ribeiro et al, 2021; Sallam et al, 2016, 2017; Shi et al, 2020; Simoes et al, 2016), ligation (Lima et al, 2018; Maida et al, 2017; Ruiz et al, 2014; Wang et al, 2016), bile duct ligation (Haddadian et al, 2013), cannulation (Beltrán et al, 2020; Da Silva et al, 2002; Neto et al, 2017; Sant'Ana et al, 2011), implantation of stimulators (Dai et al, 2020; Domingos‐Souza et al, 2021), or if they have already been administered substances beforehand (Lo Giudice et al, 2002).…”

Section: Hrv: Control (Baseline) Values From Frequency‐domain Analysismentioning

confidence: 99%

Heart rate variability in male rats

Švorc,

Grešová,

Švorc

2023

Physiological Reports

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The cardiovascular system is primarily controlled by the autonomic nervous system, and any changes in sympathetic or parasympathetic activity also have an impact on myocardial activity. Heart rate variability (HRV) is a readily available metric used to assess heart rate control by the autonomic nervous system. HRV can provide information about neural (parasympathetic, sympathetic, reflex) and humoral (hormones, thermoregulation) control of myocardial activity. Because there are no relevant reference values for HRV parameters in rats in the scientific literature, all experimental results are only interpreted on the basis of changes from currently measured control or baseline HRV values, which are, however, significantly different in individual studies. Considering the significant variability of published HRV data, the present study focused primarily on comparing control or baseline HRV values under different conditions in in vivo experiments involving rats. The aim of the study was therefore to assess whether there are differences in the starting values before the experiment itself.

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Section: Hrv: Control (Baseline) Values From Frequency‐domain Analysismentioning

confidence: 99%

Heart rate variability in male rats

Švorc,

Grešová,

Švorc

2023

Physiological Reports

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“…There is evidence of an association between caffeine consumption and high blood pressure [ 58 , 74 , 75 , 76 , 77 ]. This effect is related to caffeine’s antagonistic action on adenosine receptors in the brain, fostering greater secretion of renin [ 78 ], and increasing dopaminergic neurotransmitters [ 79 ].…”

Section: Vasopressor Effectsmentioning

confidence: 99%

Caffeine: cardiorespiratory effects and tissue protection in animal models

et al. 2021

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Objective. The aim of this review is to analyze the cardiorespiratory and tissueprotective effects of caffeine in animal models. Peer-reviewed literature published between 1975 and 2021 was retrieved from CAB Abstracts, PubMed, ISI Web of Knowledge, and Scopus. Extracted data were analyzed to address the mechanism of action of caffeine on cardiorespiratory parameters (heart rate and rhythm), vasopressor effects, and some indices of respiratory function; we close this review by discussing the existing debate on the research carried out on the effects of caffeine on tissue protection.Adenosine acts through specific receptors and is a negative inotropic andchronotropic agent. Blockage of its cardiac receptors can cause tachycardia (with arrhythmogenic potential) due to the intense activity of β1 receptors. In terms of tissue protection, caffeine produces inhibition of hyperoxia-induced pulmonary inflammation by decreasing proinflammatory cytokine expression in animal models. Conclusion. The protection that caffeine provides to tissues is not limited to the CNS, as studies have demonstrated that it generates attenuation of inflammatory effects in pulmonary tissue, where it inhibits the effects of some pro-inflammatory cytokines and prevents functional and structural changes.

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“…6,7 Efek antagonis kafein terhadap reseptor adenosine inilah yang berperan dalam mekanisme pengaturan tekanan darah pasca konsumsi kopi. 8 Kafein adalah komponen penting dari kopi, 1 cangkir kopi hitam setara dengan 150 ml mengandung sekitar 60-120 mg kafein. 1 Kafein merupakan suatu zat yang bersifat stimulan yang berefek terhadap terjadinya palpitasi dan kardiak aritmia pada penderita hipertensi.…”

Section: Pendahuluanunclassified

Respon akut tekanan darah akibat konsumsi kopi pada wanita sehat

Yusni

Yusuf

2020

JGI

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Background: Coffee contains caffeine. Caffeine is the main component that influences the response of the cardiovascular system and blood pressure (BP). Acute response of coffee to increased BP is related to caffeine.Objectives: This study aims to analyze the acute response of coffee consumption on BP in healthy females therefore coffee is an alternative therapy for hypotension.Methods: The research design was a clinical trial. Treatment: black coffee, Gayo’s Arabica, 10 mg, coffee brewed with 150 ml of boiling water, without sugar. BP was examined using a mercury sphygmomanometer and stethoscope. BP each subject was examined twice and averaged. BP was checked 3 times: before, 30, and 60 minutes after coffee consumption. All subjects were non-coffee drinkers. A total of 20 healthy female, 18-20 years old were divided into two groups: the non-intervention (n=9) and intervention (n=11). Data was analyzed by independent and paired sample t-test.Results: Coffee increased systolic 10-20 mmHg (14.09%) and diastolic 3.64 mmHg. Coffee lowers 36.36% of subjects with hypotension. There was no difference between systolic pre-test (101.11±12.69 vs 100.00±10.00 mmHg; p=0.83) and 30 minutes post-intervention (102.22±13.01 vs 101.82±9.82 mmHg; p=0.94). There were a significant differences in systolic after 60 minutes post-intervention (103.33±11.18 vs 114.09±5.84 mmHg; p=0.01*) between non-intervention and intervention. There was no difference between diastolic pretest (70.00±5.59 vs. 68.18±6.03 mmHg; p=0.49), 30 minutes (70.59±5.27 vs. 70.00±6.33 mmHg; p=0.83), and 60 minutes post-intervention (70.00±5.59 vs. 71.82±4.04 mmHg; p=0.41) between non-intervention and intervention. Data showed that systolic was significantly different (p=0.00*) after 60 minutes of coffee consumption in the intervention group. Conclusion: The acute response of coffee consumption to systolic increases was after 60 minutes and not 30 minutes of coffee consumption. Coffee doesn’t affect diastolic in healthy women, but it needs further research.

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Caffeine and physical training: effects on cardiac morphology and cardiovascular response

Cited by 7 publications

References 29 publications

Heart rate variability in male rats

Heart rate variability in male rats

Caffeine: cardiorespiratory effects and tissue protection in animal models

Respon akut tekanan darah akibat konsumsi kopi pada wanita sehat

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