Riassunto
I rapporti tra attività sportiva e osteoporosi non sono scontati sia in senso positivo che negativo. L’uso di intense contrazioni muscolari di alcuni tipi di sport da un lato dovrebbe stimolare l’osso a incrementare la resistenza lungo le linee di forza, come dimostrerebbero i valori di densità ossea nei sollevatori di peso, ma carichi ripetuti e troppo frequenti possono in altri sport determinare fratture da stress, che sottintendono come la densità ossea non sia consona alle necessità richieste da una certa attività e cioè che non si siano sviluppati i meccanismi di adattamento che ci si aspetterebbe. Inoltre, talune attività richiedono un peso corporeo minimo ottenibile solo con una dieta rigorosa, che talvolta determina nei soggetti giovani di sesso femminile modificazioni ormonali con amenorrea secondaria e riduzione della densità ossea.
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Faletti, C., Ganzit, G.P., Stesina, G.L., Goitre, B. (2009). Osteoporosi e sport. In: Osteoporosi e malattie metaboliche dell’osso. Springer, Milano. https://doi.org/10.1007/978-88-470-1357-5_5
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