The Effect of Prolonged Aerobic Exercise on Salivary Secretion of Immunoglobulin a And serum Cortisol Ievel in Young Male Adult in Okada, Nigeria. Journal title: JOURNAL OF ADVANCES IN BIOLOGY Authors: Alfred Friday Ehiaghe, Agbonlahor D.E., Amegor O.F, Ehiaghe I.J. Subject(s):