Jiří Vítovec

ORCID: 0000-0002-9510-566X
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About
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Research Areas
  • Nonlinear Differential Equations Analysis
  • Stability and Controllability of Differential Equations
  • Differential Equations and Numerical Methods
  • Differential Equations and Boundary Problems
  • Numerical methods for differential equations
  • Stroke Rehabilitation and Recovery
  • Muscle activation and electromyography studies
  • Cardiovascular and exercise physiology
  • Advanced Harmonic Analysis Research
  • advanced mathematical theories
  • Cardiovascular Disease and Adiposity
  • Stochastic processes and financial applications
  • Cardiac Fibrosis and Remodeling
  • Heart Failure Treatment and Management
  • Cardiovascular Syncope and Autonomic Disorders
  • Retinoids in leukemia and cellular processes
  • Acute Ischemic Stroke Management
  • Antioxidant Activity and Oxidative Stress
  • Organ Transplantation Techniques and Outcomes
  • Adipokines, Inflammation, and Metabolic Diseases
  • Hormonal and reproductive studies
  • Probability and Risk Models
  • Fractional Differential Equations Solutions
  • Cardiovascular Function and Risk Factors
  • Regulation of Appetite and Obesity

Masaryk University
2004-2019

St. Anne's University Hospital Brno
2019

University Hospital Brno
2019

Brno University of Technology
2012-2017

Central European Institute of Technology
2013-2017

This study was designed to evaluate the effects of low-frequency electrical stimulation (LFES) on muscle strength and blood flow in patients with advanced chronic heart failure (CHF).Patients CHF (n=15; age 56.5 +/- 5.2 years; New York Heart Association III - IV; ejection fraction 18.7 3.3%) were examined before after 6 weeks LFES (10 Hz) quadriceps calf muscles both legs (1 h/day, 7 days/week). Dynamometry performed weekly determine maximal (F(max); N) isokinetic peak torque (PT(max); Nm);...

10.1253/circj.70.75 article EN Circulation Journal 2005-12-26

The aim of this study was to investigate whether electrical stimulation skeletal muscles could represent a rehabilitation alternative for patients with chronic heart failure (CHF). Thirty CHF and NYHA class II-III were randomly assigned program using either or bicycle training. Patients in the first group (n = 15) had 8 weeks home-based low-frequency (LFES) applied simultaneously quadriceps calf both legs (1 h/day 7 days/week); second underwent 40 minute aerobic exercise (3 times week)....

10.1536/ihj.47.441 article EN International Heart Journal 2006-01-01

10.1016/j.amc.2014.06.066 article EN Applied Mathematics and Computation 2014-07-09

Zkoumame pololinearni Eulerovy dynamicke rovnice druheho řadu na casových skalach s kladnými periodickými koeficienty. Ukažeme, že tyto jsou podminěně oscilatoricke, tj. existuje přesna hranice (konstanta zadana pomoci koeficientů dane rovnice) mezi oscilaci a neoscilaci těchto rovnic. Navic tuto takzvanou kritickou konstantu explicitně urcime. V připadě, casova skala realna cisla nebo cela cisla, nase výsledky odpovidaji klasickým výsledkům stejně jako připad, koeficienty zkoumane nahrazeny...

10.14232/ejqtde.2015.1.6 article CS cc-by Electronic journal of qualitative theory of differential equations 2015-01-01

10.1016/j.na.2009.06.078 article CS Nonlinear Analysis 2009-06-22

Atherosclerosis as a main etiopathogenetic source for coronary artery disease (CAD) development is intimately related to dynamic changes in the extracellular matrix (ECM). Elevated levels of MMP-13 have been observed human atherosclerotic plaques which could also involve variability gene. The aim study was associate rs640198 polymorphism with CAD and/or its severity. comprised 1071 consecutive patients suspected or known (CAD), confirmed by angiography. Genotyping gene performed using...

10.1155/2012/795739 article EN Disease Markers 2012-01-01

We introduce the concept of q-regularly varying functions and establish basic properties such functions. Among other things it is shown that considering regular variation in q-calculus somehow natural leads to interesting observations simplifications compared with classical continuous discrete theories. The obtained theory applied an investigation asymptotic behavior solutions linear second-order q-difference equations.

10.1088/1751-8113/41/49/495203 article EN Journal of Physics A Mathematical and Theoretical 2008-10-29

In this paper we discuss the asymptotic behavior of solutions delay dynamic equation where , is a function and time scale. We formulate principle which gives guarantee that graph at least one solution above mentioned stays in prescribed domain. This uses idea retraction method suitable tool for investigating equations. illustrated by an example.

10.1186/1687-1847-2012-183 article EN cc-by Advances in Difference Equations 2012-10-24

In this paper we introduce and study q-rapidly varying functions on the lattice q N0 := {q k : ∈ N0}, > 1, which naturally extend recently established concept of q-regularly functions. These types together form class so-called q-Karamata The theory is then applied to half-linear q-difference equations get information about asymptotic behavior nonoscillatory solutions. obtained results can be seen as q-versions existing ones in linear differential equation case. However two important aspects...

10.14232/ejqtde.2011.1.24 article EN cc-by Electronic journal of qualitative theory of differential equations 2011-01-01

Objective: The objective of this study was to evaluate the feasibility and effectiveness an innovative school stroke heart attack educational programme for children. Design: Non-randomised controlled trial with intervention control group conducted in set time periods. Results were compared among periods both groups also between groups. Setting: included children from 47 schools Czech Republic. Children 37 one county ( N = 2,436) participated as target population. involved 900 pupils 10...

10.1177/0017896919849080 article EN Health Education Journal 2019-05-22

In this paper we study a system of delay dynamic equations on the time scale form where , and are functions. We interested in asymptotic behavior solutions mentioned system. More precisely, formulate conditions function f, which guarantee that graph at least one solution above-mentioned stays prescribed domain. This result generalizes some previous results concerning non-delay systems or equations. A relevant example is considered. MSC:34N05, 39A10.

10.1186/1687-2770-2013-260 article EN cc-by Boundary Value Problems 2013-11-27

Ortotopická transplantace srdce (OTS) přináší prodloužení života a zlepšení jeho kvality mnoha pacientům s těžkým srdečním selháním. Po transplantaci je však třeba počítat častějším výskytem metabolických komplikací, za které na prvním místě zodpovědná imunosupresivní léčba. V našem souboru 315 pacientů po OTS mělo 52 % diabetes mellitus současně hyperlipoproteinemii, hyperlipoproteinemii bez 41 %, hyperlipoproteinemie 3 žádnou z těchto poruch pouze 4 nemocných. Je diskutována možnost...

10.1016/j.crvasa.2013.06.010 article CS publisher-specific-oa Cor et Vasa 2013-07-04

Abstract Retinoic X receptor alpha (RXRA), a member of nuclear superfamily, plays key role in development, metabolism, glucose homeostasis, and intestinal cholesterol balance. The aim this study was to examine an association RXR introne 5 A(39526)AA polymorphism ABO blood groups with chronic heart failure (CHF) the Czech population. A total 238 patients control group 246 subjects were included study. gene detected by PCR RFLP methods. Significant differences distributions RXRA alleles...

10.2478/s11535-010-0089-y article EN cc-by-nc-nd Open Life Sciences 2010-09-03

Abstract . We establish the so-called “ telescoping principle ” for oscillation of second order half-linear dynamic equation [ r ( t )Φ( x<sup> Δ</sup>)]<sup>Δ</sup> + c x<sup>σ</sup> ) = 0 on a time scale. This provides method enabling us to construct many new oscillatory equations. Unlike previous works concerning principle, we formulate some results under weaker assumption ≠ (instead > 0).

10.2478/v10127-009-0041-6 article EN cc-by-nc-nd Tatra Mountains Mathematical Publications 2009-12-01

In this paper we study asymptotic properties of solutions nonlinear dynamic systems on time scales the form yΔ(t) = f (t, y(t)), where : 𝕋 × ℝn → ℝn, and is a scale. For given set Ω ⊂ formulate conditions for function which guarantee that at least one solution y above system stays in Ω. Unlike previous papers, assume more general shape or guaranteeing an existence bounded easier better verifiable form. Thanks to this, can find wider range equations with solutions. The example illustrating type added.

10.1063/1.4992648 article EN AIP conference proceedings 2017-01-01

Vasku, A.1; Goldbergova, M.1; Spinarova, L.2; Spinar, J.2; Vitovec, Vacha, J.1 Author Information

10.1097/00004872-200406002-00739 article EN Journal of Hypertension 2004-06-01

: Wednesday, June 16, 2004: POSTER SESSIONS: Poster Session 52: Genetics and Molecular Biology

10.1097/00004872-200406002-01205 article EN Journal of Hypertension 2004-06-01
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