Titre : bêta-Alanine

bêta-Alanine : Questions médicales fréquentes

Termes MeSH sélectionnés :

Ventricular Function, Left

Questions fréquentes et termes MeSH associés

Diagnostic 2

#1

Comment diagnostiquer une carence en bêta-alanine ?

Il n'existe pas de test spécifique; une évaluation des symptômes et des apports alimentaires est nécessaire.
Carence en acides aminés Bêta-alanine Évaluation nutritionnelle
#2

Quels tests peuvent évaluer les niveaux de bêta-alanine ?

Des analyses sanguines peuvent mesurer les niveaux d'acides aminés, y compris la bêta-alanine.
Analyse sanguine Acides aminés Bêta-alanine

Symptômes 2

#1

Quels sont les symptômes d'une supplémentation excessive en bêta-alanine ?

Une supplémentation excessive peut provoquer des picotements, des démangeaisons ou des rougeurs.
Effets indésirables Bêta-alanine Paresthésie
#2

La bêta-alanine cause-t-elle des effets secondaires ?

Des effets secondaires comme des picotements peuvent survenir, mais ils sont généralement bénins.
Effets secondaires Bêta-alanine Paresthésie

Prévention 2

#1

Comment prévenir une carence en bêta-alanine ?

Une alimentation équilibrée incluant des sources de protéines peut prévenir une carence.
Prévention Bêta-alanine Alimentation équilibrée
#2

Les sportifs doivent-ils se supplémenter en bêta-alanine ?

Les sportifs peuvent bénéficier d'une supplémentation pour améliorer leur endurance et performance.
Supplémentation Bêta-alanine Endurance

Traitements 2

#1

La bêta-alanine est-elle utilisée pour traiter des maladies ?

Elle n'est pas un traitement médical, mais un complément pour améliorer la performance sportive.
Compléments alimentaires Bêta-alanine Performance sportive
#2

Comment la bêta-alanine améliore-t-elle la performance ?

Elle augmente les niveaux de carnosine dans les muscles, retardant la fatigue lors d'exercices intenses.
Carnosine Bêta-alanine Performance physique

Complications 2

#1

Quelles complications peuvent survenir avec une surconsommation ?

Une surconsommation peut entraîner des troubles gastro-intestinaux et des picotements.
Complications Bêta-alanine Troubles gastro-intestinaux
#2

La bêta-alanine peut-elle interagir avec d'autres médicaments ?

Des interactions sont possibles; il est conseillé de consulter un professionnel de santé.
Interactions médicamenteuses Bêta-alanine Consultation médicale

Facteurs de risque 2

#1

Qui est à risque de carence en bêta-alanine ?

Les personnes ayant une alimentation pauvre en protéines ou végétalienne peuvent être à risque.
Carence en acides aminés Bêta-alanine Alimentation végétalienne
#2

Les athlètes d'endurance ont-ils besoin de plus de bêta-alanine ?

Oui, ils peuvent avoir besoin de plus de bêta-alanine pour améliorer leur performance et récupération.
Athlètes Bêta-alanine Performance sportive
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Dr Olivier Menir

Contenu validé par Dr Olivier Menir

Expert en Médecine, Optimisation des Parcours de Soins et Révision Médicale


Validation scientifique effectuée le 13/03/2025

Contenu vérifié selon les dernières recommandations médicales

Auteurs principaux

Bryan Saunders

6 publications dans cette catégorie

Affiliations :
  • Applied Physiology and Nutrition Research Group, Rheumatology Division, Faculdade de Medicina FMUSP, School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil.
  • Institute of Orthopaedics and Traumatology, Faculty of Medicine FMUSP, University of São Paulo, São Paulo, Brazil.

Eimear Dolan

5 publications dans cette catégorie

Affiliations :
  • Applied Physiology and Nutrition Research Group, Rheumatology Division, Faculdade de Medicina FMUSP, School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil.

Bruno Gualano

4 publications dans cette catégorie

Affiliations :
  • Applied Physiology and Nutrition Research Group, School of Physical Education and Sport; Rheumatology Division; Faculdade de Medicina FMUSP, Universidade de São Paulo, São Paulo, SP, BR, University of São Paulo, Brazil.
  • Food Research Center, University of São Paulo, São Paulo, Brazil.

Marcelo Papoti

3 publications dans cette catégorie

Affiliations :
  • University of São Paulo, Medicine University of Ribeirão Preto (FMRP-USP), Ribeirão Preto, São Paulo, Brazil.
  • University of São Paulo, School of Physical Education and sport of Ribeirão Preto (EEFERP-USP), Ribeirão Preto, São Paulo, Brazil.
Publications dans "bêta-Alanine" :

Craig Sale

3 publications dans cette catégorie

Affiliations :
  • Musculoskeletal Physiology Research Group, Sport, Health and Performance Enhancement Research Centre, Nottingham Trent University, United Kingdom.

Tasuke Ando

3 publications dans cette catégorie

Affiliations :
  • Laboratory of Animal Microbiology, Department of Animal Science, Graduate School of Agricultural Science, Tohoku University, 468-1, Aramaki Aza Aoba, Aoba-ku, Sendai 980-0845, Japan.
Publications dans "bêta-Alanine" :

Hiroshi Yoneyama

3 publications dans cette catégorie

Affiliations :
  • Laboratory of Animal Microbiology, Department of Animal Science, Graduate School of Agricultural Science, Tohoku University, 468-1, Aramaki Aza Aoba, Aoba-ku, Sendai 980-0845, Japan.
Publications dans "bêta-Alanine" :

Matheus Silva Norberto

2 publications dans cette catégorie

Affiliations :
  • University of São Paulo, Medicine University of Ribeirão Preto (FMRP-USP), Ribeirão Preto, São Paulo, Brazil. matheus.norberto@usp.br.
  • University of São Paulo, School of Physical Education and sport of Ribeirão Preto (EEFERP-USP), Ribeirão Preto, São Paulo, Brazil. matheus.norberto@usp.br.
Publications dans "bêta-Alanine" :

Ricardo Augusto Barbieri

2 publications dans cette catégorie

Affiliations :
  • University of São Paulo, School of Physical Education and sport of Ribeirão Preto (EEFERP-USP), Ribeirão Preto, São Paulo, Brazil.
  • Estácio University, Ribeirão Preto, São Paulo, Brazil.
Publications dans "bêta-Alanine" :

Danilo Rodrigues Bertucci

2 publications dans cette catégorie

Affiliations :
  • Department of Physical Education, State São Paulo University, (UNESP), Rio Claro, São Paulo, Brazil.
Publications dans "bêta-Alanine" :

Ronaldo Bucken Gobbi

2 publications dans cette catégorie

Affiliations :
  • University of São Paulo, School of Physical Education and sport of Ribeirão Preto (EEFERP-USP), Ribeirão Preto, São Paulo, Brazil.
Publications dans "bêta-Alanine" :

Eduardo Zapaterra Campos

2 publications dans cette catégorie

Affiliations :
  • Department of Physical Education, Federal University of Pernambuco, (UFPE), Recife, Pernambuco, Brazil.
Publications dans "bêta-Alanine" :

Ellen Cristini De Freitas

2 publications dans cette catégorie

Affiliations :
  • University of São Paulo, School of Physical Education and sport of Ribeirão Preto (EEFERP-USP), Ribeirão Preto, São Paulo, Brazil.
Publications dans "bêta-Alanine" :

Pedro Perim

2 publications dans cette catégorie

Affiliations :
  • Applied Physiology and Nutrition Research Group, Rheumatology Division, Faculdade de Medicina FMUSP, School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil.

Gabriel Barreto

2 publications dans cette catégorie

Affiliations :
  • Applied Physiology and Nutrition Research Group, Rheumatology Division, Faculdade de Medicina FMUSP, School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil.

Nathan Gobbi

2 publications dans cette catégorie

Affiliations :
  • Applied Physiology and Nutrition Research Group, Rheumatology Division, Faculdade de Medicina FMUSP, School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil.

Ondrej Cesak

2 publications dans cette catégorie

Affiliations :
  • Department of Urology, University Hospital Olomouc, 775 20 Olomouc, Czech Republic.
  • Faculty of Medicine and Dentistry, Palacky University, 775 15 Olomouc, Czech Republic.

Jitka Vostalova

2 publications dans cette catégorie

Affiliations :
  • Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacky University, 775 15 Olomouc, Czech Republic.

Ales Vidlar

2 publications dans cette catégorie

Affiliations :
  • Department of Urology, University Hospital Olomouc, 775 20 Olomouc, Czech Republic.
  • Faculty of Medicine and Dentistry, Palacky University, 775 15 Olomouc, Czech Republic.

Sources (10000 au total)

Insight of electrocardiographic and electrophysiological parameters on the left ventricular function in patients with ventricular arrhythmia from left ventricular summit.

Ventricular arrhythmia (VA) commonly originate from the left ventricular summit (LVS) and results in left ventricular (LV) dysfunction in some patients; however, factors related to LV cardiomyopathy h... Between 2013 and 2018, a total of 139 patients (60.7% men; mean age 53.2 ± 13.9 years old) underwent catheter ablation for LVS VA in two centers. Detailed patient demographics, electrocardiograms, ele... Acute procedural success was achieved in 92.8% of patients. There were 40 patients (28.8%) with LV cardiomyopathy, and the mean LVEF improved from 37.5 ± 9.3% to 48.5 ± 10.2% after ablation (p < .001)... In patients with VA from the LVS, PVC QRSd and AEAD are factors associated with deteriorating LV systolic function. Catheter ablation can reverse LV remodeling. Narrower QRSd and better LVEF are assoc...

The relationship between ascending aortic diameter with left atrial functions and left ventricular mass index in a population with normal left ventricular systolic function.

Ascending aortic dilatation is a common clinical issue. In the present study, we aimed to evaluate the relationship between ascending aortic diameter with left ventricular (LV) and left atrial (LA) fu... A total of 127 healthy participants with normal LV systolic function took part in the study. Echocardiographic measurements were obtained from each subject.... The mean age of the participants was 43 ± 14.1 years and 76 (59.8%) were female. The mean aortic diameter of the participants was 32.2 ± 4.7 mm. A negative correlation was found between aortic diamete... A strong correlation between ascending aortic diameter with LV and LA functions, and LVMI in individuals with normal LV systolic function....

Left ventricular function and volumes from gated [

Positron emission tomography (PET) myocardial perfusion imaging (MPI) can be used to evaluate left ventricular (LV) volumes and function. We performed a head-to-head comparison of LV function and volu... In this prospective study, 51 patients underwent [... LVEF and LV wall motion can be accurately assessed using [...

Relationship between left ventricular mechanical synchrony and left ventricular systolic function: a CZT-SPECT analysis.

CZT-SPECT has good agreement in the evaluation of mechanical synchronization compared with conventional SPECT. The aim of this study was to evaluate the correlation between left ventricular mechanical... This retrospective study involved 371 patients (239 males and 132 females, mean age 61.06 ± 11.78 years old) who underwent GMPI at the Nuclear Medicine Department of Shanxi Cardiovascular Hospital fro... PP, PSD, PHB, HS and HK were significantly different among the four groups (F = 5.20, 188.72, 202.88, 171.05, 101.36, P < 0.001). Pairwise comparison tests showed significant differences in PSD and PH... CZT SPECT GMPI provided left ventricular mechanical contraction synchrony parameters that correlated well with left ventricular systolic function. Worse left ventricular mechanical contraction synchro...

Left ventricular contractance: A new measure of contractile function.

Myocardial contractility is poorly defined and difficult to compare between studies. Contractance or myocardial active strain energy density (MASED) measures the mechanical work done per unit volume (... Data obtained from three previously published experimental studies using trabecular tissue was used to provide contemporaneous nominal stress and strain data in 18 different scenarios with different l... We showed that calculating MASED was feasible and provided a measure of energy production (work done) per unit volume of myocardium during contraction. The new term for contractile function, contracta...

Right ventricular function declines prior to left ventricular ejection fraction in hypertrophic cardiomyopathy.

The right ventricle (RV) in hypertrophic cardiomyopathy (HCM) tends to be neglected, as previous efforts have predominantly focused on examining the prognostic value of left ventricular (LV) abnormali... Two hundred and ninety HCM patients with preserved LV ejection fraction (LVEF ≥ 55%) and 30 age- and sex-matched controls underwent cardiovascular magnetic resonance (CMR). All patients were followed ... When compared to controls, HCM patients exhibited lower RV and LV peak global longitudinal systolic strains on feature-tracking analysis of cine images, while RVEF and LVEF were within the normal rang... In HCM, RV function, including RV strain, and LV strain decrease over time despite preserved LVEF. Reduction in RV but not LV function is associated with adverse cardiovascular outcomes. Assessing RV ...

The hemodynamic effect of simulated atrial fibrillation on left ventricular function.

Atrial fibrillation (AF) is the most common sustained arrhythmia in humans. The onset of the arrhythmia can significantly impair cardiac function. This hemodynamic deterioration has been explained by ... Twelve patients undergoing catheter ablation for paroxysmal AF were paced simultaneously from the proximal coronary sinus and the His bundle region according to prescribed sequences of irregular R-R i... Simulated AF led to significant impairment of left ventricular systolic and diastolic function. Both loss of atrial contraction and heart rate irregularity significantly contributed to hemodynamic imp... Our findings strengthen the rationale for therapeutic strategies aiming at rhythm control and heart rate regularization in patients with AF....

Association of arterial properties with left ventricular morphology and function in the community.

Arterial structural and functional remodeling is recognized as a key determinant of incident heart failure, although the contribution of arterial properties on left ventricular (LV) remodeling is not ... The study cohort consisted of 539 participants without overt cardiac disease who underwent extensive cardiovascular examination. Aortic root diameter was measured by two-dimensional echocardiography a... Aortic root diameter and ePWV were correlated with LV mass index and LVGLS, while only ePWV was related to E / e' ratio. In multivariable analysis, aortic root diameter and ePWV were significantly rel... Aortic root size and ePWV were independently associated with unfavorable LV remodeling in individuals free of cardiac disease, which might provide useful information into the pathogenesis-linking arte...