background preloader

Fisiologia

Facebook Twitter

Why Running Helps Clear Your Mind. It is something of a cliché among runners, how the activity never fails to clear your head.

Why Running Helps Clear Your Mind

Does some creative block have you feeling stuck? Go for a run. Are you deliberating between one of two potentially life-altering decisions? Go for a run. Are you feeling mildly mad, sad, or even just vaguely meh? The author Joyce Carol Oates once wrote in a column for the New York Times that “in running the mind flees with the body … in rhythm with our feet and the swinging of our arms.”

A good run can sometimes make you feel like a brand-new person. The other fascinating thing here is where these new cells pop up: in the hippocampus, a region of the brain associated with learning and memory. Other post-run changes have been recorded in the brain’s frontal lobe, with increased activity seen in this region after people adopt a long-term habit of physical activity.

To find out, she did a version of a classic experiment among researchers who study emotion: She and Richard J. Incidence of Running-Related Injuries Per 1000 h of running in Different Types of Runners: A Systematic Review and Meta-Analysis. Background No systematic review has identified the incidence of running-related injuries per 1000 h of running in different types of runners.

Incidence of Running-Related Injuries Per 1000 h of running in Different Types of Runners: A Systematic Review and Meta-Analysis

Objective The purpose of the present review was to systematically search the literature for the incidence of running-related injuries per 1000 h of running in different types of runners, and to include the data in meta-analyses. Data Sources A search of the PubMed, Scopus, SPORTDiscus, PEDro and Web of Science databases was conducted. Study Selection Titles, abstracts, and full-text articles were screened by two blinded reviewers to identify prospective cohort studies and randomized controlled trials reporting the incidence of running-related injuries in novice runners, recreational runners, ultra-marathon runners, and track and field athletes.

Study Appraisal and Synthesis Methods Data were extracted from all studies and comprised for further analysis. Results After screening 815 abstracts, 13 original articles were included in the main analysis. Influence of brain catecholamines on the development of fatigue in exercising rats in the heat - Hasegawa - 2008 - The Journal of Physiology. Abstract The purpose of the present study was to identify the effects of an acute injection of a dual dopamine (DA)/noradrenaline (NA) reuptake inhibitor (bupropion) on exercise performance, thermoregulation and neurotransmitters in the preoptic area and anterior hypothalamus (PO/AH) of the rat during exercise in the heat.

Influence of brain catecholamines on the development of fatigue in exercising rats in the heat - Hasegawa - 2008 - The Journal of Physiology

Body core temperature (Tcore), brain temperature (Tbrain) and tail skin temperature (Ttail) were measured. A microdialysis probe was inserted in the PO/AH, and samples for measurement of extracellular DA, NA and serotonin (5-HT) levels were collected. Aspectos médicos a tener en cuenta en el corredor de montaña (II), por Daniel Brotons. [Puedes leer la primera parte de este artículo aquí] Asistencia médica en Transvulcania 2014.

Aspectos médicos a tener en cuenta en el corredor de montaña (II), por Daniel Brotons

Foto luismimarlo.blogspot.com.esEn estas carreras, principalmente las ultras, es importante ser conscientes de la importancia de los avituallamientos con el objetivo de proporcionar hidratos de carbono y líquidos. Aspectos médicos a tener en cuenta en el corredor de montaña (I), por Daniel Brotons. El entrenamiento de montaña requiere unas exigencias fisiológicas y psicológicas realmente importantes, y nosotros los especialistas en medicina del deporte somos conscientes, por lo que interesa realizar un programa de seguimiento y control médico con el objetivo de preservar y potenciar la salud, prevenir patología y mejorar el rendimiento deportivo.

Aspectos médicos a tener en cuenta en el corredor de montaña (I), por Daniel Brotons

Exercise & The Brain. Thermoregulation, fatigue and brain neurotransmission during prolonged exercise in normal and high ambient temperatures. Fatigue should be acknowledged as a complex phenomenon influenced by both peripheral and central factors.

Thermoregulation, fatigue and brain neurotransmission during prolonged exercise in normal and high ambient temperatures.

Because strenuous exercise is associated with cerebral metabolic and neurohumoral alterations that may relate to central fatigue, it is important to explore the influence of neurotransmitters (specifically serotonine, dopamine and noradrenaline) on the outcome of performance and in particular on fatigue. Prolonged exercise may induce homeostatic disturbances within the central nervous system that subsequently attenuates motor activation.

Therefore, strenuous exercise is a challenge not only to the cardiorespiratory and locomotive systems but also to the brain. Central nervous system fatigue. Neurochemical Mechanisms[edit] While many neurochemical changes have been observed during central nervous system fatigue, no current experimental method can provide a direct causal link between the neurochemical changes and fatigue.

Central nervous system fatigue

However, existing methods have provided enough evidence to suggest that serotonin and dopamine are significant drivers of central nervous system fatigue.[1] Serotonin[edit] Dopamine[edit] Dopamine is an excitatory neurotransmitter that regulates arousal, motivation, muscular coordination, and endurance performance.[4] Dopamine levels have been found to be lower after prolonged exercise.[5] A decrease in dopamine can decrease athletic performance as well as mental motivation. Journal of Sport and Health Science. Dr. Daniel Brotons, médico especialista en ultratrails. El Dr.

Dr. Daniel Brotons, médico especialista en ultratrails

Daniel Brotons es uno de los médicos del deporte que más sabe de ultratrails en nuestro país. Lleva el control médico de Núria Picas, Bea García, Tòfol Castanyer, Kílian Jornet y un sinfín de corredores de montaña, por lo que su profundo conocimiento de esta disciplina deportiva está fuera de toda duda. El Dr. Brotons revisando las capacidades fisiológicas de Kílian Jornet.

La conversación se lleva a cabo en una de las consultas en las el Dr. Dr. Los retos que se plantean los corredores de montaña deben ser coherentes con las posibilidades reales de conseguirlos. El Dr Brotons dice:Cuando nos ponemos a correr, las endorfinas fluyen y realizan su función, bloqueando muchas sensaciones negativas que en otras circunstancias interpretaríamos como un peligro para nuestra integridad. Los corredores de montaña más experimentados, amateurs, incluso los profesionales, si se tienen que retirar, se retiran. ¿Cuáles son los síntomas físicos que nos indican la obligatoriedad de pararnos? Dr. 0912f50c2eea5e8cdb000000.pdf.