Authors: Fahlman, MM Engels, HJ Morgan, AL Kolokouri, I

Citation: Mm. Fahlman et al., Mucosal IgA response to repeated wingate tests in females, INT J SP M, 22(2), 2001, pp. 127-131

Authors: Cardinal, BJ Engels, HJ

Citation: Bj. Cardinal et Hj. Engels, Ginseng does not enhance psychological well-being in healthy, young adults: Results of a double-blind, placebo-controlled, randomized clinical trial, J AM DIET A, 101(6), 2001, pp. 655-660

Authors: Engels, HJ Wirth, JC Celik, S Dorsey, JL

Citation: Hj. Engels et al., Influence of caffeine on metabolic and cardiovascular functions during sustained light intensity cycling and at rest, INT J SP NU, 9(4), 1999, pp. 361-370

Authors: Engels, HJ

Citation: Hj. Engels, Publication of adverse events in exercise studies involving nutritional agents, INT J SP NU, 9(1), 1999, pp. 89-91