CONTRORDINE: LO SPORT PUO’ FARE ANCHE MOLTO MALE ALLA SALUTE !
Una particolare attenzione quando fa caldo – se non siete ben allenati o avete superato i 50 anni, state molto attenti – lo sforzo eccessivo fa produrre tossine all’organismo il che vuol dire favorire l’invecchiamento dell’organismo; per non parlare dei rischi cardiaci; anche se avete fatto tutti i controlli necessari ! Nessun controllo garatntisce al 100% che non possiate avere un problema cardiaco che non risulta dagli esami.
Anche per i giovani, un eccesso di lavoro fisico ad alte temperature (e non solo), soprattutto se non siete molto ben allenati, può solo farvi male ed anche il vostro organismo produce un eccesso di tossine; ovvero l’organismo invece di benefici ne trae un invecchiamento fisiologico.
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Articolo di G.Seregni, giornalista, ha stidiato Scienze Motorie presso l’Università Statale di Milano e insegnante di ruolo per 15 anni nella scuola statale; con 25 di libera attività in palestra anche come insegnate di ginnastica dolce.
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E’ dai tempi dei primi allenamenti aerobici (sforzo prolungato per potenziare la resistenza cardiaca), anni ’70-80, che nel settore sportivo si raccontava della
–emblematica morte per arresto cardiaco di James F. Fixx (il 20 luglio 1984 muore , all’età di 52 anni a causa di un infarto fulminante, dopo la sua corsa giornaliera) il quale, nei suoi libri, si vantava di potersi permettere di giocare a tennis sotto il sole delle tre del pomeriggio di Los Angeles.
Secondo Kenneth Cooper, il famoso medico di Dallas che ha studiato l’attività fisica: “Se si corre per più di 15 chilometri a settimana, lo si fa per qualche altro motivo rispetto alla salute“. Inoltre Cooper sostiene che altri studi stanno chiarendo il dubbio secondo il quale l’esercizio fisico eccessivo possa addirittura rendere il corpo più debole e quindi più vulnerabile anche al cancro.
Basterebbe un poco di buon senso per capire che, comunque, tutti gli sforzi superiori alle nostre normali capacità fisiche possano danneggiarci.
Ce lo fa capire il nostro stesso corpo, mandandoci salvifici messaggi di stanchezza.
Oggi, sull’European Heart Journal, quindicinale di OxfordUniversity Press, i ricercatori invitano alla cautela verso gli eccessi nell’attività fisica.
A tale proposito è forse inutile rammentare i danno fisici e i rischi di gravi danni cardiaci, che subiscono gli atleti professionisti.
Per fare un esempio si sa come gli sciatori vadano incontro a gravi danni alle ginocchia; per eccessi di sollecitazione, mentre i ginnasti possano subire gravissimi danni alla zona lombare ecc…
Ovviamente coesistono tesi opposte da chi sostiene l’attività fisica come unico modo per vivere e invecchiare bene a chi ribadisce i rischi di ogni eccesso.
LA VERITA’ STA SEMPRE NEL MEZZO; UNA REGOLARE E RAGIONEVOLE ATTIVITA’ FISICA FA BENE
SE VOLETE SEMPRE SUPERARE QUALCHE TRAGUARDO ANCHE A COSTO DI ENORMI SFORZI, ATTENZIONE; SE NON DISPONETE DI TUTTE QUELLE CAUTELE E CONTROLLI DEI VERI ATLETI E QUINDI : RISCHIATE PIU DI LORO LA VOSTRA SALUTE.
Come la logica ci dovrebbe suggerire; molto dipende sia dalle caratteristiche fisiche e fisiologiche del soggetto, sia dal tipo di allenamento raggiunto; senza mai scordare quanto l’eccesso possa fare sempre male. Conta anche molto la vostra predisposizione familiare verso certe malattie.
Ne è un chiaro esempio lo studio sugli iscritti alla Vasalopper (famosissima gara svedese di sci di fondo) dal 1989 al 1999; proporzionalmente ai tempi di gara raggiunti, molti partecipanti, nei dieci anni successivi avevano avuto gravi problemi cardiaci.
Mikah True, conosciuto come Cavallo Bianco e grandissimo ultramaratoneta, morì a 58 anni durante un allenamento.
– L’autopsia rivelò un cuore pieno di cicatrici.
- l’allenamento estremo, anche nel ciclismo e altri sport, può provocare modifiche vascolari strutturali e innalzamento di alcuni biomaker. Solo nel 10% dei casi queste modificazioni rimangono tali per mesi.
- le “piccole lesioni” ripetute possono provocare una fibrosi miocardica e quindi una suscettibilità spiccata verso l’aritmia atriale e ventricolare.
- le fibre muscolari di un cuore in stato di sofferenza durante uno sforzo eccesivo e costante, rilasciano nel sangue un eccesso di troponina (una proteina) che causa danni alle cellule del muscolo cardiaco.
-Pare che ben il12% degli ultramaratoneti, anche se in apparente ottimo stato di salute, abbiano chiare lesioni miocardiche e, dopo pochi anni, soggetti ad eventi coronarici importanti.
-Ma, secondo noi, non è necessario essere grandi e famosi atleti per sottoporre il nostro cuore a sforzi che lo danneggiano.
–Basti pensare a tutte le occasioni che la vita moderna ci riserva per sottoporci a forti stress fisici e psichici e alla moda di dedicarsi agli sport, anche estremi; soprattutto solo nei brevi periodi di vacanza.
-Nemmeno la semplice attività di palestra è esente da rischi; primo fra tutti quello dei filtri dell’aria condizionata che vengono cambiati assai raramente e secondo un genere di allenamento standard con macchinari e/o musiche che ci aiutano a non percepire i messaggi di stress che il nostro corpo ci invia.
-Ultimo, ma non per importanza, il fatto che
–molti assistenti/insegnati in palestra hanno solo fatto dei corsi specifici, ma non hanno le necessarie nozioni di anatomia e fisiologia per comprenderne il funzionamento e quindi i rischi che certi ritmi possono causare.
-La nostra civiltà, forse, ci ha abituato a raggiungere un tale stadio di tensioni e impegni continui da
–non essere più in grado di sentire i messaggi di pericolo/stanchezza che il nostro corpo ci invia.
Ed ecco anche spiegato il successo di tante filosofie/ginnastiche orientali, come lo yoga e il Tai Chi, che fanno tanti proseliti tra le donne e gli uomini più famosi della nostra epoca, proprio perché aiutano a ritrovare ritmi più consoni al vero benessere del nostro corpo.
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