{"id":3057,"date":"2011-06-29T23:00:00","date_gmt":"2011-06-29T23:00:00","guid":{"rendered":"http:\/\/fisicos21.com\/?p=3057"},"modified":"2014-09-17T11:55:08","modified_gmt":"2014-09-17T09:55:08","slug":"calentar-en-exceso-perjudica-la-carrera","status":"publish","type":"post","link":"https:\/\/fisicos21.com\/?p=3057","title":{"rendered":"Calentar en exceso perjudica la carrera"},"content":{"rendered":"<h4><strong><img loading=\"lazy\" decoding=\"async\" id=\"__wp-temp-img-id\" src=\"http:\/\/metronewsca.files.wordpress.com\/2013\/08\/university-of-calgary.jpg?w=618&amp;h=408&amp;crop=1\" alt=\"\" width=\"618\" height=\"408\" \/>Calentar en exceso perjudica el rendimiento en carrera seg\u00fan la Universidad de Calgary<\/strong><\/h4>\n<p>Un estudio de la Universidad canadiense de Calgary parece mostrar efectos negativos gracias a un estudio de Elias Tomaras de la facultad de Kinesiolog\u00eda de este centro candiense.<\/p>\n<p><!--more--><\/p>\n<div id=\"_mcePaste\" style=\"position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;\">University of Calgary Research Suggests Long Warm-Ups Can Sabotage Race Performance<\/div>\n<div id=\"_mcePaste\" style=\"position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;\">University of Calgary Faculty of Kinesiology researcher Elias Tomaras says the idea came to him while watching track and field sprinters warm-up for a race. \u201cIf you watch sprinters, short distance speed skaters or cyclists before their race, they will often warm-up for one to two hours, including several brief bouts of high intensity exercise. From an exercise physiology point of view, it seemed like it might be pretty tiring.\u201d<\/div>\n<div id=\"_mcePaste\" style=\"position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;\">Many coaches and physiologists believe that a longer warm up provides an increase in muscle temperature, acceleration of oxygen uptake kinetics, increased anaerobic metabolism and a process called postactivation potentiation of the muscles. However, very few studies have studied if warm ups has a detrimental effect on performance.<\/div>\n<div id=\"_mcePaste\" style=\"position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;\"><\/div>\n<div id=\"_mcePaste\" style=\"position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;\">As it turns out, the warm-up is one of the more contentious issues in high-performance sport. Different coaches have different theories and not a lot of quality research has been done to identify the optimal warm-up. Tomaras\u2019 study, published recently in the prestigious Journal of Applied Physiology (http:\/\/bit.ly\/mGhnoK) suggests that at the very least, athletes may want to lower the intensity and reduce the amount of time that they warm up.<\/div>\n<div id=\"_mcePaste\" style=\"position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;\">\u201cOur study compared a standard warm-up, with what we termed an experimental warm-up,\u201d explains Tomaras. \u201cWe interviewed a number of coaches and athletes to come up with the traditional warm-up.\u201d<\/div>\n<div id=\"_mcePaste\" style=\"position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;\">The experiment involved high performance sprint cyclists performing a traditional warm-up lasting about 50 minutes with a graduated intensity that ranged from 60 to 95 per cent of maximal heart rate before ending with several all-out sprints. The experimental warm-up was much shorter at about 15 minutes, and was performed at a lower intensity, ending with just a single sprint. The researchers conducted a number of tests following each warm-up to accurately measure the athlete\u2019s power output and fatigue.<\/div>\n<div id=\"_mcePaste\" style=\"position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;\">\u201cWhat we found, was that the shorter warm-up resulted in significantly less muscle fatigue and a peak power output that was 6.2 per cent higher. This represents a substantial improvement for an elite athlete,\u201d says Tomaras. \u201cOn the basis of this study I would suggest that sprint athletes should start thinking about adopting a shorter and less strenuous warm up for better performance.\u201d<\/div>\n<div id=\"_mcePaste\" style=\"position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;\">Source: University of Calgary<\/div>\n<div><\/div>\n<div><\/div>\n<div><span style=\"font-family: arial, helvetica, sans-serif;\">La investigaci\u00f3n de la Universidad de Calgary sugiere que un calentamiento largo puede perjudicar el rendimiento en carrera<img decoding=\"async\" style=\"float: right; margin: 4px;\" src=\"http:\/\/media.winnipegfreepress.com\/images\/300*196\/CPT11661353_high.jpg\" alt=\"d\" \/><\/span><\/div>\n<div><span style=\"font-family: arial, helvetica, sans-serif;\">\u00a0<\/span><\/div>\n<div><span style=\"font-family: arial, helvetica, sans-serif;\">El investigador de la Facultad de Kinesyolog\u00eda de la Universidad de Calgary, Elias Tomaras dice que la idea le lleg\u00f3 mientras vigilaba el calentamiento de corredores de campo a trav\u00e9s durante una carrera. \u00bb Si t\u00fa observas a los sprinters, los patinadores de distancias cortas o los ciclistas antes de sus carreras, ellos a veces calientan durante una o dos hora, incluyendo varios movimientos con ejercicios de alta intensidad. Desde un punto de vista fisiol\u00f3gico parece como si debiera ser presumiblemente fatigoso.<\/span><\/div>\n<div><span style=\"font-family: arial, helvetica, sans-serif;\">\u00a0<\/span><\/div>\n<div><span style=\"font-family: arial, helvetica, sans-serif;\">Muchos entrenadores y fisi\u00f3logos creen que un calentamiento largo ofrece un incremento en la temperatura del m\u00fasculo, la aceleraci\u00f3n de las adaptaciones cin\u00e9ticas, el incremento del metabolismo anaer\u00f3bico y un proceso llamado postactivaci\u00f3n y potenciaci\u00f3n de los m\u00fasculos. Sin embargo, muy pocos estudios han probado si los calentamientos ten\u00edan un efecto negativo del rendimiento.<\/span><\/div>\n<div><span style=\"font-family: arial, helvetica, sans-serif;\">\u00a0<\/span><\/div>\n<div><span style=\"font-family: arial, helvetica, sans-serif;\"><span style=\"color: #000000; font-size: x-small;\">Como parece ser, el calentamiento es uno de los temas m\u00e1s discutidos en los deportes de alto rendimiento. Diferentes entrenadres tienen teor\u00edas diferentes y no muchos estudios de calidad han sido hechos para identificar al calentamiento \u00f3ptimo. El estudio de Tomaras publicado recientemente en el presigioso<\/span><span style=\"color: #000000; font-size: small;\">s Journal of Applied Physiology (http:\/\/bit.ly\/mGhnoK) \u00a0sugiere que al menos, los atletas quiz\u00e1s quieran bajar la intesidad y reducir la cantidad de tiempo en la que est\u00e1n calentando.<\/span><\/span><\/div>\n<div><span style=\"font-family: arial, helvetica, sans-serif;\">\u00a0<\/span><\/div>\n<div><span style=\"color: #000000; font-size: small;\"><span style=\"font-family: arial, helvetica, sans-serif;\"><img decoding=\"async\" style=\"float: left; margin: 4px;\" src=\"http:\/\/www.smh.com.au\/ffxImage\/urlpicture_id_1067103275772_2003\/10\/26\/27DrainChambers_drugbuff.jpg\" alt=\"s\" \/><\/span><\/span><\/div>\n<div><span style=\"font-family: arial, helvetica, sans-serif;\">\u201cNuestro estudio compar\u00f3 un calentamiento standar, con lo que hemos llamado un calentamiento experimental\u00bb explica Tomaras \u00abPreguntamos a un n\u00famero de entrenadores y atletas para mejorar el calentamiento tradicional.\u201d<\/span><\/div>\n<div><span style=\"font-family: arial, helvetica, sans-serif;\">\u00a0<\/span><\/div>\n<div><span style=\"font-family: arial, helvetica, sans-serif;\">El experimento consisti\u00f3 en ciclistas de sprint de alto rendimiento haciendo un calentamiento tradicional que duraba sobre 50 minutos con una intensidad graduada que iba del 60 al 95 por ciento del m\u00e1ximo rango de trabajo cardiaco antes de finalizar con varias series de \u00a0sprints. El calentamiento experimental era mucho m\u00e1s coto, sobre 15 minutos y fue desarrollado en una intensidad menor, finalizando con solo un sprint. \u00a0Los investigadores concluyeron con un n\u00famero de tests siguiendo el t\u00e9rmino de cada calentamiento para seguidamente medir la potencia del atleta y su fatiga.<\/span><\/div>\n<div><span style=\"font-family: arial, helvetica, sans-serif;\">\u00a0<\/span><\/div>\n<div><span style=\"font-family: arial, helvetica, sans-serif;\">\u201cLo que encontramos, fue que los calentamienos m\u00e1s cortos resultaron en mucha menor fatiga muscular y un \u00edndice de potencia que fue del 6.2% mayor. Este representa una mejora sustancial en un deportista de \u00e9lite\u00bb dice Tomaras \u201cEn las bases de este estudio yo podr\u00eda sugerir que los atletas de sprint deber\u00edan de empezar a pensar sobre adoptar un calentamiento m\u00e1s corto y menos estresandte para mejorar su rendimiento.\u201d<\/span><\/div>\n<div><span style=\"font-family: arial, helvetica, sans-serif;\">Fuente: University of Calgary<\/span><\/div>\n<div><span style=\"font-family: 'Times New Roman'; color: #000000; font-size: small;\">\u00a0<\/span><\/div>\n<div><\/div>\n<p><strong>\u00a0<\/strong><\/p>\n<div style=\"margin: 20px 0;\"><div class=\"qrcswholewtapper\" style=\"text-align:left;\"><div class=\"qrcprowrapper\"  id=\"qrcwraa2leds\"><div class=\"qrc_canvass\" id=\"qrc_cuttenpages_2\" style=\"display:inline-block\" data-text=\"https:\/\/fisicos21.com\/?p=3057\"><\/div><div><a download=\"Calentar en exceso perjudica la carrera.png\" class=\"qrcdownloads\" id=\"worign\">\r\n           <button type=\"button\" style=\"min-width:206px;background:#dddddd;color:#000;font-weight: 600;border: 1px solid #dddddd;border-radius:4px;font-size:12px;padding: 6px 0;\" class=\"uqr_code_btn\">Download QR<\/button>\r\n           <\/a><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Calentar en exceso perjudica el rendimiento en carrera seg\u00fan la Universidad de Calgary Un estudio de la Universidad canadiense de Calgary parece mostrar efectos negativos gracias a un estudio de Elias Tomaras de la facultad de Kinesiolog\u00eda de este centro candiense. 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