Influência das formas de carboidratos no treinamento físico e na supercompensação glicogênica de ratos

Abstract

Two carbohydrates forms, sucrose and corn starch, were utilized, in the physical training of rats, having as basis the classic method of overcompensation of glycogen which includes the depletion of tissue glycogen followed by carbohydrate load. The analyzed parameters were body weight gain, feed conversion, feed efficiency, tissue muscle and hepatic glycogen levels, plasma glucose and serum total lipids. Wistar male rats were utilized, consuming diets with simples carbohydrates (CHOs) and complex carbohydrates (CHOc). The experiment consisted of three phases: 1st phase- adaptation to the liquid medium, 2nd Phase- training, where the physical training program was established, in these phases 1 and 2 the groups were fed diets containing 75% of carbohydrates and finally in the 3rd phase- of glycogen overcompensation , a shift in the concentration of carbohydrates was done. Proceeding this phase, the groups were submitted to one day called the event , where all the groups swam for about 2 and a half hours and at the end of this, the replenishment of the tissue stores of glycogen in the following times 0, 6, 12, 24, 48 and 72 hours was monitored. The main results point out that: (a) the physical training for rats raised the tissue glycogen levels; (b) the forms of carbohydrates simple (sucrose) or complex (corn starch), did not intervene in tissue glycogen, plasma glucose and serum total lipids; (c) the overcompensation of glycogen rise higher store of glycogen in tissue hepatic rats as compared with tissue muscle; (d) the greatest replenishment of glycogen in all tissues occurred within 12 hours consuming diets with either simple or complex diets; (e) the complex form did not provide reduced levels of serum glucose in the 9-hour post-fasting; (f) With advancing time, the gradual increase of the contents of the total lipids every hour regardless of the form of CHO consumed by the animals.