{"id":4057,"date":"2020-03-10T09:41:43","date_gmt":"2020-03-10T08:41:43","guid":{"rendered":"https:\/\/www.overstims.com\/conseil\/?p=4057"},"modified":"2020-03-10T09:41:43","modified_gmt":"2020-03-10T08:41:43","slug":"la-disidratazione","status":"publish","type":"post","link":"https:\/\/it.overstims.com\/conseil\/la-disidratazione\/","title":{"rendered":"La disidratazione"},"content":{"rendered":"<p>In caso di disidratazione, i riflessi diminuiscono e pu\u00f2 sopraggiungere il mal di testa. In presenza di deficit di acqua, i muscoli si riscaldano e la ridotta idratazione delle fibre pu\u00f2 provocare strappi muscolari. Se non sono adeguatamente idratati, i tendini si infiammano e si forma la tendinite.<\/p>\n<p>Se nella circolazione del sangue \u00e8 presente meno liquido il sangue \u00e8 pi\u00f9 denso, anche se l\u2019irrigazione dei muscoli durante lo sforzo fisico \u00e8 meno performante. Se all\u2019organismo manca acqua, il cuore batte pi\u00f9 in fretta (tachicardia). \u00c8 interessante tenere a mente un dato: se l\u2019organismo perde l\u20191% del suo peso di acqua, perde il 10% di potenza muscolare. Vale a dire che uno sportivo di 70 kg che perda 2 litri di acqua, ossia il 3% del suo peso, vede calare del 30% la sua potenza muscolare.<\/p>\n<p>&nbsp;<\/p>\n<h2><strong>Meccanismo<\/strong><\/h2>\n<p>La contrazione muscolare di per se stessa provoca un rilascio di calore (come i pistoni di un motore) e produce una perdita di acqua. Con la traspirazione l\u2019organismo perde acqua. Anche le condizioni climatiche possono amplificare la disidratazione: il sole, il calore ambiente. Se \u00e8 caldo e umido, la disidratazione \u00e8 amplificata in quanto \u00e8 alterata l\u2019evaporazione del sudore (il metodo principale per abbassare la temperatura corporea). Quando c\u2019\u00e8 umidit\u00e0 il sudore evapora male.<\/p>\n<p>&nbsp;<\/p>\n<h2><strong>Prevenire la disidratazione<\/strong><\/h2>\n<p>\u00c8 necessario bere prima, durante e dopo un\u2019attivit\u00e0 fisica. Alcune regole fondamentali per fare s\u00ec che, durante lo sforzo fisico, l\u2019apporto d\u2019acqua raggiunga rapidamente i muscoli sono:<\/p>\n<p>&#8211; bere poco per volta dall\u2019inizio dell\u2019attivit\u00e0<\/p>\n<p>&#8211; se la bevanda contiene sale (sodio), le cellule muscolari sono pi\u00f9 idratate (il sale trattiene l\u2019acqua)<\/p>\n<p>&#8211; se il pH della bevanda si avvicina a 7, il liquido contenuto nello stomaco arriva pi\u00f9 rapidamente ai muscoli<\/p>\n<p>&#8211; le bevande pi\u00f9 performanti per prevenire la disidratazione durante lo sforzo sono le bevande mineralizzate<\/p>\n<p>&#8211; una regola essenziale: durante un\u2019attivit\u00e0 fisica occorre bere <u>prima<\/u> di avere sete, quando si avverte la sete l\u2019organismo ha gi\u00e0 perso acqua.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In caso di disidratazione, i riflessi diminuiscono e pu\u00f2 sopraggiungere il mal di testa. In presenza di deficit di acqua, i muscoli si riscaldano e la ridotta idratazione delle fibre pu\u00f2 provocare strappi muscolari. Se non sono adeguatamente idratati, i tendini si infiammano e si forma la tendinite. Se nella circolazione del sangue \u00e8 presente [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":2976,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[249],"class_list":["post-4057","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-consigli-sulla-nutrizione"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>La disidratazione - OVERSTIM.s<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/it.overstims.com\/conseil\/la-disidratazione\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"La disidratazione - OVERSTIM.s\" \/>\n<meta property=\"og:description\" content=\"In caso di disidratazione, i riflessi diminuiscono e pu\u00f2 sopraggiungere il mal di testa. In presenza di deficit di acqua, i muscoli si riscaldano e la ridotta idratazione delle fibre pu\u00f2 provocare strappi muscolari. Se non sono adeguatamente idratati, i tendini si infiammano e si forma la tendinite. 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