L-tyrosine Benefits and Scientific References
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Caffeine and Performance ScientificReferences

Collomp, K., Caillaud, C., Audran, M., Chanal, J., Prefaut, C. Influence of actute and chronic bouts of caffeine on performance and catecholamines in the course of maximal exercise. CR Soc Biol 184:87-92, 1990

Collomp. K., Ahmaidi, S., Audran, M., Chanal, J., Prefaut, C. Effects of caffeine ingestion on performance and anaerobic metabolism during the Wingate test. Int J Sports Med 12:439-443, 1991

Costill, D., Dalsky, G., Fink, W. Effects of caffeine ingestion on metabolism and exercise performance. Med Sci Sports Exer 10:155-158, 1978.

Essig, D., Costill, D., VanHandel, P. Effects of caffeine ingestion on utilization of muscle glycogen and lipid during leg ergometer cycling. Int J Sports Med 1:86-90, 1980.

Falk, B., Burstein, R., Rosenblum, J., Shapiro, Y., Zylber-Katz, E., Bashan, N. Effects of caffeine ingestion on body fluid balance and thermoregulation during exercise. Can J Physiol Pharmacol 68:889-892, 1990.

Gordon, N., Myburgh, J., Kruger, P., Kempff, P., Cilliers, J., Moolman, J., Grobler, H. Effects of caffeine on thermoregulatory and myocardial function during endurance performance. S Afr Med J 62:644-647, 1982.

Graham, T., Spriet, L. Performance and metabolic responses to a high caffeine dose during prolonged exercise. J Appl Physiol 71:2292-2298, 1991.

Graham, T., Spriet, L. Metabolic, catecholamine and exercise performance responses to varying doses of caffeine. J Appl Physiol 78:867-874, 1995.

Ivy, J., Costill, D., Fink, W., Lower, R. Influence of caffeine and carbohydrate feedings on endurance performance. Med Sci Sports Exer 11:6-11, 1979.

Jackman, M., Wendling, P., Friars, D., Graham, T. Metabolic, catecholamine and endurance responses to caffeine during intense exercise. J Appl Physiol 81: 1658-63, 1996.

MacIntosh, B., Wright, B. Caffeine ingestion and performance of a 1500-metre swim. Can J Appl Physiol 20:168-177, 1995.

Pasman, W., VanBaak, M., Jeukendrup, A., DeHaan, A. The effect of different dosages of caffeine on endurance performance time. Int J Sports Med 16:225-230, 1995.