Les corps cétoniques et les performances en endurance. Qu’en penser en 2019 ?

Publication date: Available online 10 November 2019Source: Science &SportsAuthor(s): X. BigardRésuméObjectifsLa nutrition joue un rôle indéniable pour l’excellence des performances dans les sports d’endurance. Les réserves en glucose de l’organisme sous forme de glycogène étant limitées, toute épargne du glycogène et tout substrat alternatif au glucose peuvent être utiles pour les performances. C’est ainsi que ces dernières années, les stratégies nutritionnelles destinées à augmenter la disponibilité en corps cétoniques ont bénéficié d’un certain engouement. L’objectif de cette revue est de faire l’état des connaissances actuelles sur l’intérêt que peuvent représenter les régimes cétogènes (RCet) ou les compléments alimentaires à base de corps cétoniques (CC) sur les performances dans les sports d’endurance.ActualitésLes RCet sont mal tolérés par les sportifs, ce qui justifie le développement de compléments alimentaires à base de sels ou d’esters de CC (ECC). Les ECC assurent une bonne disponibilité plasmatique de β-hydroxybutyrate (βHB), le principal CC métabolisable, avec un effet dose ; celle-ci reste cependant très d&eacut...
Source: Science and Sports - Category: Sports Medicine Source Type: research

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Authors: Silveira C, Guedes R, Maia D, Curral R, Coelho R Abstract Multiple Sclerosis (MS) is a chronic disabling neuroinflammatory disease. Psychiatric manifestations have a high prevalence in MS patients and may worsen the illness progression and the patients' quality of life (QoL). Depression is a highly prevalent condition in MS patients, associated with poorer adherence to treatment, decreased functional status and QoL, and increased suicide risk. Diagnosis and treatment of this disorder is challenging because of symptom overlap. Other prevalent psychiatric comorbidities are anxiety disorders, bipolar disorder...
Source: Psychiatry Investigation - Category: Psychiatry Tags: Psychiatry Investig Source Type: research
Functional coupling of M1 muscarinic acetylcholine receptor to Gαq/11 in dorsolateral prefrontal cortex from patients with psychiatric disorders: a postmortem study. Eur Arch Psychiatry Clin Neurosci. 2019 Dec 05;: Authors: Odagaki Y, Kinoshita M, Meana JJ, Callado LF, García-Sevilla JA Abstract Accumulating studies have implicated intracellular signaling through muscarinic acetylcholine receptors (mAChRs) in psychiatric illness. In the present study, carbamylcholine chloride (carbachol)-induced Gαi/o and Gαq/11 activation was identified in postmortem human prefrontal cortical ...
Source: European Archives of Psychiatry and Clinical Neuroscience - Category: Psychiatry Tags: Eur Arch Psychiatry Clin Neurosci Source Type: research
Publication date: Available online 6 December 2019Source: Psychiatric Clinics of North AmericaAuthor(s): Gabriele Sani, Alan C. Swann
Source: Psychiatric Clinics of North America - Category: Psychiatry Source Type: research
ConclusionsRumination is known to be associated with poor prognosis in mental health. This study suggests that rumination is a maladaptive coping style associated not only with worry, distress and illness severity, but also with socioeconomic status. Also, rumination demonstrated a specific association with panic disorder.
Source: Journal of Psychiatric Research - Category: Psychiatry Source Type: research
Publication date: Available online 6 December 2019Source: Journal of Psychiatric ResearchAuthor(s): Anthony J. Rosellini, Siyu Liu, Grace N. Anderson, Sophia Sbi, Esther Tung, Evdokia KnyazhanskayaAbstractA growing literature is utilizing machine learning methods to develop psychopathology risk algorithms that can be used to inform preventive intervention. However, efforts to develop algorithms for internalizing disorder onset have been limited. The goal of this study was to utilize prospective survey data and ensemble machine learning to develop algorithms predicting adult onset internalizing disorders. The data were from...
Source: Journal of Psychiatric Research - Category: Psychiatry Source Type: research
Publication date: Available online 7 December 2019Source: Progress in NeurobiologyAuthor(s): M.M.J. van den Berg, J. Krauskopf, J.G. Ramaekers, J.C.S. Kleinjans, J. Prickaerts, J.J. BriedéAbstractCirculating microRNAs (cimiRNAs) are a class of non-encoding RNAs found in bodily fluids such as blood, cerebrospinal fluid (CSF) and tears. CimiRNAs have been implicated as promising biomarkers for central nervous system (CNS) disorders because they are actively secreted as messengers and are profoundly involved in fine-tuning of developmental and differentiation processes. Furthermore, they are attractive biomarkers becau...
Source: Progress in Neurobiology - Category: Neuroscience Source Type: research
This week’s Psychology Around the Net takes a look at what to do if you think your child is at risk for mental illness, why self-regulation is so important for people with ADHD, the symptoms of problematic smartphone use, and the mental and physical fatigue that often accompanies chronic illness, and more.     Does Mental Illness Run in Families?: What should you do if you suspect your child is at risk of developing a mental disorder — especially when mental illness runs in your family? According to psychologist Scott Bea PsyD, an important first step is helping your child build resilience, a persona...
Source: World of Psychology - Category: Psychiatry & Psychology Authors: Tags: ADHD and ADD Anxiety and Panic Autism Children and Teens Depression Disorders Family General Health-related Mental Health and Wellness Parenting Psychiatry Psychology Psychology Around the Net Research Asd Bipolar Disorder Source Type: blogs
Publication date: December 2019Source: Neurophysiologie Clinique, Volume 49, Issue 6Author(s): Agathe Legrand, Gabriella Abou Khalil, Karine Doré-Mazars, Arnaud SajIntroductionLa stabilité posturale diminuant avec l’âge, les personnes âgées ont de plus en plus de difficulté à réaliser deux tâches simultanément. En effet, l’augmentation du contrôle moteur et sensoriel pour le maintien de l’équilibre réduit les capacités cognitives, notamment attentionnelles lors de la réalisation de la seconde tâche (...
Source: Neurophysiologie Clinique - Category: Neuroscience Source Type: research
DiscussionLes personnes avec des déficits de la perception visuelle pourraient bénéficier de ce type d’intervention, en situation écologique. Les données des sujets en bonne santé aideront à interpréter les résultats de ces patients recrutés dans une future étude.
Source: Neurophysiologie Clinique - Category: Neuroscience Source Type: research
Discussion/conclusionNous démontrons dans cette étude un phénotype posturo-locomoteur typique d’une atteinte vestibulaire unilatérale. Ce test supplémentaire permet de renforcer les outils diagnostiques de la pathologie sur le modèle rongeur de lésion vestibulaire unilatérale mais aussi de tester des composés pharmacologiques favorisant la restauration de l’équilibre. L’utilisation de ce dispositif dans le domaine clinique pourrait avoir des avantages dans le diagnostic et dans le suivi de la réhabilitation pharmacologique et physique du patient.
Source: Neurophysiologie Clinique - Category: Neuroscience Source Type: research
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