Comparison of the Effects of Hydration with Water or Isotonic Solution on the Recovery of Cardiac Autonomic Modulation

2015 ◽  
Vol 25 (2) ◽  
pp. 145-153 ◽  
Author(s):  
Franciele Marques Vanderlei ◽  
Isadora Lessa Moreno ◽  
Luiz Carlos Marques Vanderlei ◽  
Carlos Marcelo Pastre ◽  
Luiz Carlos de Abreu ◽  
...  

Despite the importance of hydration during exercise, the impact of ingesting water or isotonic solution during and after exercise on the regulation of autonomic modulation is unclear. The study aimed to compare the effect of ingesting water or isotonic solution (Gatorade®, Brazil) on cardiac autonomic modulation in young people after submaximal aerobic exercise. Thirty-one young men were subjected to a protocol consisting of 4 steps: 1) incremental test, 2) control protocol without hydration, 3) protocol with ingestion of water, and 4) protocol with ingestion of isotonic solution. The protocol consisted of 10 min of rest, 90 min of treadmill exercise at 60% VO2peak, and 60 min of recovery at rest. In the hydration protocols, hydration occurred during and after exercise, every 15 min beginning after the 15th minute of exercise, with the amount ingested proportional to body mass lost in the control protocol. Autonomic modulation was evaluated by heart rate variability. The hydration protocols promoted a more efficient recovery of autonomic modulation, and for the exercise performed, regardless of the hydration administered, the effect on autonomic modulation was similar.

Author(s):  
Gabriel Kolesny Tricot ◽  
Fabiula Isoton Isoton Novelli ◽  
Lucieli Teresa Cambri

AbstractThis study aimed to assess whether obesity and/or maximal exercise can change 24 h cardiac autonomic modulation and blood pressure in young men. Thirty-nine men (n: 20; 21.9±1.8 kg·m−2, and n: 19; 32.9±2.4 kg·m−2) were randomly assigned to perform a control (non-exercise) and an experimental day exercise (after maximal incremental test). Cardiac autonomic modulation was evaluated through frequency domain heart rate variability (HRV). Obesity did not impair the ambulatory HRV (p>0.05), however higher diastolic blood pressure during asleep time (p=0.02; group main effect) was observed. The 24 h and awake heart rate was higher on the experimental day (p<0.05; day main effect), regardless of obesity. Hypotension on the experimental day, compared to control day, was observed (p<0.05). Obesity indicators were significantly correlated with heart rate during asleep time (Rho=0.34 to 0.36) and with ambulatory blood pressure(r/Rho=0.32 to 0.53). Furthermore, the HRV threshold workload was significantly correlated with ambulatory heart rate (r/Rho=− 0.38 to−0.52). Finally, ambulatory HRV in obese young men was preserved; however, diastolic blood pressure was increased during asleep time. Maximal exercise caused heart rate increase and 24h hypotension, with decreased cardiac autonomic modulation in the first hour, regardless of obesity.


Circulation ◽  
2015 ◽  
Vol 132 (suppl_3) ◽  
Author(s):  
Brian Villa ◽  
Ross W May ◽  
Frank D Fincham ◽  
Marcos A Sanchez-Gonzalez

Background: Schizophrenia (SCH), which reduces the average life expectancy by 10-25 years, is associated with an increased risk of diabetes and cardiovascular disease. Elevated resting HR has been associated with increased risk for the development of cardiometabolic disease, which is common in SCH patients. This association may be due in part to increased sympathovagal tone inducing elevated resting HR. However, the impact of cardioprotective positive emotions such as trait forgiveness (TF) on HR and cardiac autonomic modulation via HRV in patients with SCH is not well known. We hypothesized that TF would be a significant predictor of HR in SCH patients. Methods: A total of 250 subjects (SCH patients = 80; male = 68; healthy controls [CON] = 170; Male = 115) participated in this study. SCH patients stopped antipsychotic medications 24-hrs before the experiments and were body weight (M ± SEM) (82 ± 5 Kg), aged matched (42 ± 4 years) with CON. Standardized scales were used to measure affectivity including depression (CESD), positivity of relationships (PR), rumination, and TF. After a 10-min rest period, 5-min ECG tracings were collected for HRV analysis. The non-parametric Mann-Whitney U Tests were used to evaluate the differences in HRV parameters at rest between SCH and CON. Hierarchical multiple regression (HMR) analyses were conducted to test the association between HR and affectivity to demonstrate the incremental contribution of sets of predictors in accounting for HR variance. Results: There were significant (p<0.01) differences between the groups (CON vs. SCH) in HR (72 ± 1.0 vs. 87 ± 1.4) and HRV the parameters Total Power (1822 ± 134 vs. 1183 ± 148), RMSSD (32.0 ± 1.7 vs. 19.0 ± 1.6), LF (762.7 ± 80.1 vs. 337.4 ± 45.0; surrogate of baroreflex function), and PR (26.1 ± 0.4 vs. 23.5 ± 0.7), but not TF. The HMR models showed that among affective symptoms, TF had an inverse relationship with heart rates and was the only significant predictor (p<.05) in the full model accounting for 8.1% in HR variance in the SCH group. Conclusions: These findings suggest that TF positively influences cardiac autonomic modulation in patients with SCH. Prospective studies aimed at examining TF as a cardioprotective behavioral intervention in SCH patients at increased cardiovascular risk.


2016 ◽  
Vol 17 (5) ◽  
pp. 498
Author(s):  
Alyssa Conte Da Silva ◽  
Juliana Falcão Padilha ◽  
Jefferson Luiz Brum Marques ◽  
Cláudia Mirian De Godoy Marques

Introdução: Existem poucos estudos que evidenciam a manipulação vertebral relacionada à modulação autonômica cardíaca. Objetivo: Revisar a literatura sobre os efeitos da manipulação vertebral sobre a modulação autonômica cardíaca. Métodos: Foi realizada uma busca bibliográfica nas bases de dados da saúde Medline, Pubmed e Cinahl, no período correspondido entre setembro e novembro de 2014. Foram utilizados os descritores em inglês Spinal Manipulation, Cardiac Autonomic Modulation, Autonomic Nervous System, Heart Rate Variability, além de associações entre eles. Resultados: Foram encontrados 190 artigos, sendo excluídos 39 por serem repetidos, restando 151. Destes, 124 não se encaixaram nos critérios de inclusão e após leitura crítica e análise dos materiais foram selecionados 7 artigos. Grande parte dos estudos revelou que a manipulação da coluna, independente do segmento, demonstra alterações autonômicas, tanto em nível simpático quanto parassimpático. Conclusão: Existem diferentes metodologias para avaliação da modulação autonômica cardíaca, sendo a Variabilidade da Frequência cardíaca através do eletrocardiograma a mais utilizada. A manipulação vertebral exerceu influência, na maioria dos artigos, sobre a modulação autonômica cardíaca.Palavras-chave: manipulação da coluna, sistema nervoso autônomo, variabilidade da frequência cardíaca. 


Author(s):  
DAYIMI KAYA ◽  
IRFAN BARUTCU ◽  
ALI METIN ESEN ◽  
ATAC CELIK ◽  
ERSEL ONRAT

Author(s):  
Ana Clara Campagnolo Real Gonçalves Toledo ◽  
Allysiê Priscilla de Souza Cavina ◽  
Isadora Stefen Seixas ◽  
Letícia Rosa de Jesus ◽  
Maria Eduarda Leonel Silva ◽  
...  

2014 ◽  
Vol 125 ◽  
pp. 45-53 ◽  
Author(s):  
Martin Glos ◽  
Ingo Fietze ◽  
Alexander Blau ◽  
Gert Baumann ◽  
Thomas Penzel

2017 ◽  
Vol 17 (2) ◽  
pp. 5-14 ◽  
Author(s):  
Milana Drumond Ramos Santana ◽  
Eli Carlos Martiniano ◽  
Larissa Raylane Lucas Monteiro ◽  
Maria Do Socorro Santos De Oliveira ◽  
Vitor E. Valenti ◽  
...  

AbstractIntroduction: There is an increase in level of stress in the general population because of the social, personal and professional demands. Currently, there are only simple tools that can safely measure this stress such as levels of cortisol and heart rate variability (HRV). Objective: To analyze the relationship between salivary cortisol and the cardiac autonomic modulation. Methods: A total of fifty-one male and female subjects between 18 and 40 years old were evaluated. Saliva collection was achieved for the salivary cortisol dosage. The collection was performed through the SalivetteR tube. After this collection, the median cortisol levels (0.24 ug/dl) were analyzed and the volunteers were divided into two groups: i) cortisol below the mediane ii) cortisol above the median. After this division, each group consisted of 25 volunteers and then was verified the following information: age, gender, weight, height, body mass index (BMI), blood pressure. Shortly thereafter was assessment of cardiac autonomic modulation por meio da HRV. The Polar RS800cx heart rate receiver was placed on the chest of the volunteers, in the vicinity of the distal third of the sternum. The volunteers were instructed to remain in rest with spontaneous breathing in dorsal position for 20 minutes. HRV analysis included geometric, time and frequency domain indices. Results: There were no statistical differences for the two groups regarding systolic and diastolic blood pressure, heart rate, RR intervals or linear and frequency indices for the volunteers. In addition, also there was no correlation the cortisol with the analyzed variables (SAP, p=0.460; DAP, p = 0.270; HR, p = 0.360; RR, p = 0.380; SDNN, p = 0.510; rMSSD, p = 0.660; pNN50, p = 0.820; RRtri, p = 0.170; TINN, p = 0.470; SD1, p = 0.650; SD2, p = 0.500; LF [ms2], p = 0.880; LF [nu], p = 0.970; HF [ms2], p = 0.870; HF [nu], p = 0.960; LF/HF, p = 0.380 Conclusion: Heart rate variability autonomic control was unchanged in healthy subjects with physiological distribution of salivary cortisol levels. There was no association between normal salivary cortisol and resting autonomic regulation of heart rate.


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