scholarly journals Effect of Ischemic Preconditioning on the Recovery of Cardiac Autonomic Control From Repeated Sprint Exercise

2018 ◽  
Vol 9 ◽  
Author(s):  
Thiago R. Lopes ◽  
Jeann L. Sabino-Carvalho ◽  
Thiago H. N. Ferreira ◽  
José E. Succi ◽  
Antônio C. Silva ◽  
...  
Keyword(s):  
Ischemic Preconditioning ◽  
Autonomic Control ◽  
Sprint Exercise ◽  
Cardiac Autonomic Control ◽  
Repeated Sprint

scholarly journals Symbolic Analysis of the Heart Rate Variability During the Plateau Phase Following Maximal Sprint Exercise

2021 ◽  
Vol 12 ◽  
Author(s):  
Jorge L. Storniolo ◽  
Beatrice Cairo ◽  
Alberto Porta ◽  
Paolo Cavallari
Keyword(s):  
Simulated Data ◽  
Real Data ◽  
Symbolic Analysis ◽  
Autonomic Control ◽  
Plateau Phase ◽  
Sprint Exercise ◽  
Cardiac Autonomic Control ◽  
Spectral Profiles ◽  
Cardiac Regulation ◽  
Symbolic Approach

Cardiac autonomic control is commonly assessed via the analysis of fluctuations of the temporal distance between two consecutive R-waves (RR). Cardiac regulation assessment following high intensity physical exercise is difficult due to RR non-stationarities. The very short epoch following maximal sprint exercise when RR remains close to its lowest value, i.e., the PLATEAU, provides the opportunity to evaluate cardiac regulation from stationary RR sequences. The aim of the study is to evaluate cardiac autonomic control during PLATEAU phase following 60-m maximal sprint and compare the results to those derived from sequences featuring the same length as the PLATEAU and derived from pre-exercise and post-exercise periods. These sequences were referred to as PRE and POST sequences. RR series were recorded in 21 subjects (age: 24.9 ± 5.1 years, 15 men and six women). We applied a symbolic approach due to its ability to deal with very short RR sequences. The symbolic approach classified patterns formed by three RRs according to the sign and number of RR variations. Symbolic markers were compared to more classical time and frequency domain indexes. Comparison was extended to simulated signals to explicitly evaluate the suitability of methods to deal with short variability series. A surrogate test was applied to check the null hypothesis of random fluctuations. Over simulated data symbolic analysis was able to separate dynamics with different spectral profiles provided that the frame length was longer than 10 cardiac beats. Over real data the surrogate test indicated the presence of determinism in PRE, PLATEAU, and POST sequences. We found that the rate of patterns with two variations with unlike sign increased during PLATEAU and in POST sequences and the frequency of patterns with no variations remained unchanged during PLATEAU and decreased in POST compared to PRE sequences. Results indicated a sustained sympathetic control along with an early vagal reactivation during PLATEAU and a shift of the sympathovagal balance toward vagal predominance in POST compared to PRE sequences. Time and frequency domains markers were less powerful because they were dominated by the dramatic decrease of RR variance during PLATEAU.

Working in the Office and Smart Working Differently Impact on the Cardiac Autonomic Control

2021 ◽  
Author(s):  
Francesca Perego ◽  
Beatrice De Maria ◽  
Giuseppina Cassetti ◽  
Monica Parati ◽  
Vlasta Bari ◽  
...  
Keyword(s):  
Autonomic Control ◽  
Cardiac Autonomic Control ◽  
Smart Working

scholarly journals Effects of Pyruvate Supplementation on High-intensity Interval Exercise Induced Metabolic Acidosis and Repeated Sprint Exercise Performance of College Soccer Athletes

2021 ◽  
Author(s):  
yanping yang ◽  
Junqiang Qiu ◽  
Mengyue Wang ◽  
Lin Feng ◽  
Dan Luo ◽  
...  
Keyword(s):  
Metabolic Acidosis ◽  
High Intensity ◽  
Energy Contribution ◽  
Sprint Exercise ◽  
Interval Exercise ◽  
Repeated Sprint ◽  
Blood Ph ◽  
High Intensity Interval ◽  
The Impact ◽  
Oxidative System

Abstract Background: The effects of pyruvate on metabolic acidosis and oxidative metabolism had been studied. The ability to attenuate acidosis and improve oxidative system contribution are critical to the performance of team sport athletes during perform multiple high-intensity exercise over a limited period of time. This study aimed to investigate the impact of pyruvate supplementation on energy metabolism and metabolic acidosis during high-intensity interval exercise (HIIE), as well as to evaluate its role on repeated sprint exercise (RSE) performance.Methods: 14 well-trained male college soccer athletes (age: 20 ± 2 years, body fat: 13.11 ± 3.50 %) were studied in a randomized, double-blind, cross-over study. The participants ingested either 0.1g/kg/d of pyruvate or a placebo for 1-week. Metabolic acidosis was induced by HIIE after the supplement period, and RSE ability in the acidosis state was assessed. Venous blood pH, bicarbonate (HCO3-) and base excess (BE) were measured at baseline, pre-HIIE, post-HIIE, pre-RSE and post-RSE. Finger-stick blood lactate were collected at baseline, immediately after each bout of HIIE and 3, 5, 7, 10 min after HIIE. The energy systems contribution during HIIE were estimated. Results: Blood pH, HCO3- and BE were significantly lower than baseline after HIIE (p < 0.01) in both pyruvate group (PYR) and placebo group (PLA). Compared to PLA, the blood pH, HCO3- and BE were significantly improved in PYR at pre-HIIE (p < 0.01), post-HIIE (p < 0.01) and pre-RSE (p < 0.01). Furthermore, blood BE remained higher in PYR than PLA till end of RSE (p < 0.05). The contribution of oxidative system in the fourth bout of HIIE was higher in PYR than PLA (p < 0.05). In PLA, the ratio of total anaerobic energy contribution during HIIE was higher than that of aerobic (oxidative) (p < 0.01), but not in PYR (p > 0.05). Relative peak power (RPP) of first, fifth sprint, relative average power (RAP) of fifth sprint, the average of RPP and RAP during RSE were significantly improved in PYR compared with PLA (p < 0.05). While no significant changes in the PD% of each bout (p > 0.05) or average PD% (p > 0.05) were observed between the two groups. Conclusion: Pyruvate supplementation for 1-week enhances oxidative system energy contribution and buffers metabolic acidosis during HIIE, and improves RSE performance in acidosis.

scholarly journals Cardiac autonomic control in health and disease

2016 ◽  
Vol 594 (14) ◽  
pp. 3851-3852 ◽  
Author(s):  
Kalyanam Shivkumar ◽  
Jeffrey L. Ardell
Keyword(s):  
Autonomic Control ◽  
Cardiac Autonomic Control ◽  
Health And Disease

Effect Of The Combination Of Automated Peripheral Mechanical Stimulation And Physical Exercise On Aerobic Functional Capacity And Cardiac Autonomic Control: A Randomized Clinical Trial Protocol.

2021 ◽  
Author(s):  
Nicolle Aileen Zelada-Astudillo ◽  
Andrea Herrera-Santelices ◽  
Fabio Augusto Barbieri ◽  
Vinicius Christianini Moreno ◽  
Antonio Roberto Zamunér
Keyword(s):  
Quality Of Life ◽  
Clinical Trial ◽  
Physical Exercise ◽  
Mechanical Stimulation ◽  
Autonomic Control ◽  
Treatment Modalities ◽  
Controlled Clinical Trial ◽  
Cardiac Autonomic Control ◽  
Gait Parameters

Abstract ● Background: Automated peripheral mechanical stimulation (AMPS) has been proposed as a new complementary therapy with potential for improving motor and cardiovascular abnormalities in Parkinson's disease (PD). However, AMPS long-term effects and its combination with physical exercise is unknown. Thus, this study aims to compare the effects of a program of 12 weeks of physical exercise with a 12-week intervention program combining physical exercise and AMPS on the aerobic capacity, cardiac autonomic control and gait parameters in patients with PD.● Methods: A randomized, controlled clinical trial will be conducted. Volunteers will be randomly assigned to one of the two groups studied: 1) Exercise; or 2) AMPS + Exercise. Both groups will undergo an exercise program of 24 sessions, for 12 weeks, performed twice a week. Before exercise sessions, the group AMPS+Exercise will receive a session of active AMPS, while the group Exercise will receive an AMPS sham intervention. Shapiro-wilk’s and Levene’s tests will be used to check for data normality and homogeneity, respectively. In case parametric assumptions are fulfilled, per-protocol and intention-to-treat analyses will be performed using a mixed model analysis of variance to check for Group*Time interaction. Significance level will be set at 5%. ● Discussion: Several non-pharmacological treatment modalities have been proposed for PD, focusing primarily on the reduction of motor and musculoskeletal disorders. Regular exercise and motor training have been shown to be effective in improving quality of life. However, treatment options in general remain limited given the high prevalence and adverse impact of these disorders. So, developing new strategies that can potentiate the improvement of motor disabilities and also improve non-motor symptoms in PD is relevant. It is expected that the participants from both groups will improve their quality of life, gait parameters and their cardiac autonomic control, with greater improvements being observed in the group combining active AMPS and physical exercise.Trial registration: ClinicalTrials.gov, NCT04251728, registered February 05, 2020

Does resistance training modulate cardiac autonomic control? A systematic review and meta-analysis

2018 ◽  
Vol 29 (1) ◽  
pp. 75-103 ◽  
Author(s):  
Pooja Bhati ◽  
Jamal Ali Moiz ◽  
Geetha R. Menon ◽  
M. Ejaz Hussain
Keyword(s):  
Systematic Review ◽  
Resistance Training ◽  
Meta Analysis ◽  
Autonomic Control ◽  
Cardiac Autonomic Control

Ischemic Preconditioning and Repeated Sprint Swimming

2016 ◽  
Vol 48 (10) ◽  
pp. 1967-1975 ◽  
Author(s):  
THIAGO N. FERREIRA ◽  
JEANN L. C. SABINO-CARVALHO ◽  
THIAGO R. LOPES ◽  
INDYANARA C. RIBEIRO ◽  
JOSE E. SUCCI ◽  
...  
Keyword(s):  
Ischemic Preconditioning ◽  
Repeated Sprint ◽  
Sprint Swimming
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