Appropå att insulin skulle vara anabolt:
"The nature of the involvement of insulin, classically thought of as the most important anabolic hormone, is bizarre because it appears that in adult humans insulin does not do what it does in the growing animals traditionally used for metabolic research, such as rats, mice and even pigs. In people, it appears that it is possible to stimulate muscle protein synthesis by supplying exogenous amino acids alone while maintaining (using the insulin clamp techniques) basal blood insulin concentration at the overnight fasted level"
Body maintenance and repair: how food and exercise keep the musculoskeletal system in good shape
Experimental Physiology. 90.4 pp 427-436; January 2005
Det är förresten bara antikatabolt efter träning, inte i vila:
"We propose that there is a link between muscle protein synthesis and breakdown that is regulated, in part, through maintenance of the free intracellular pool of essential amino acids. For example, we propose that muscle protein breakdown is paradoxically elevated in the anabolic state following resistance exercise in part because the even greater stimulation of synthesis would otherwise deplete this pool. Thus, factors regulating muscle protein breakdown must be evaluated in the context of the prevailing rate of muscle protein synthesis. Further, the direct effect of factors on breakdown may depend on the physiological state. For example, local hyperinsulinemia suppresses accelerated muscle protein breakdown after exercise, but not normal resting breakdown. Thus, factors regulating muscle protein breakdown in human subjects are complex and interactive."
Control of muscle protein breakdown: effects of activity and nutritional states.
Int J Sport Nutr Exerc Metab. 2001 Dec;11 Suppl:S164-9.