Effects of plyometric exercise on muscle damage and plasma creatine kinase levels and its comparison with eccentric and concentric exercise. - Jamurtas,A.Z.; Fatouros,I.G.; Buckenmeyer,P.; Kokkinidis,E.; Taxildaris,K.; Kambas,A.; Kyriazis,G. (J Strength Cond Res, 2000)