The effect of acute magnesium loading on the maximal exercise performance of stable chronic obstructive pulmonary disease patients - Amaral, Angélica Florípedes do; Gallo Junior, Lourenço; Vannucchi, Hélio; Crescêncio, Júlio César; Vianna, Elcio Oliveira; Martinez, José Antonio Baddini (Clinics, 2012)