LEITE, R. B.; http://lattes.cnpq.br/2236864213449530; LEITE, Raylan Batista.
Resumo:
Street racing is a predominantly aerobic sport and anaerobic system activations may
occur. With this, training aimed at increasing aerobic capacity should be highlighted,
especially to improve this aspect and adaptations necessary for the sport. For this, it is
necessary to adapt the organism for the use of energy substrates that present advantages
for the performance. This study aimed to evaluate the effects of a dietary intervention
using two hypoglycemic-isocaloric diet protocols on the performance of athletes street
runners. For data collection, structured questionnaires, anthropometric evaluation, time
verification for the conclusion of the test, average speed and effort evaluation were
applied. The race tests were carried out on the same street course with a five-kilometer
extension at the same time and station. The sample consisted of 9 male amateur athletes
from street racing and divided into two groups D1 (continuous hypoglycidic diet) and
D2 (hypoclycidic diet with supercompensation of carbohydrates). In the suggested
protocols, both groups used isoenergetic diets, initially with a macronutrient percentage
of 45% of lipids, 25% of proteins and 30% of carbohydrates, in the final week of
intervention the group D2 made a supercompensation scheme of carbohydrates passing
to consume 25% of lipids, 25% of proteins and 50% of carbohydrates. The mean age of
the groups D1 and D2, respectively, was 44.75 ± 4.71 years (standard deviation) and
36.80 ± 10.57 years. The height presented was 1.65 ± 0.06 meters for the D1 group and
1.66 ± 0.04 meters for the D2 group. Before the beginning of the dietary intervention
the groups did not present significant differences between them for none of the
parameters analyzed, demonstrating homogeneity. After 4 weeks of intervention, it was
found that there were no statistical differences when the groups were analyzed in the
anthropometric parameters, however, an improvement in the means of these questions
was observed, applying intragroup analyzes D1 and D2 respectively of -1.86 kg of fat (
-2.77%) and -1.54 kg of fat (-2.42%). Regarding the performance, there were no
significant differences between the groups in the values after intervention, however, the
improvement of the parameters was exclusive of the D1 group with mean variation of -
0.35 minutes for completion of the total test, -0.13 minutes for the completion of sock
test and increase of 0.26 km / h at the average speed. In view of this the work shows that
for this category of street racing, the supercompensation of carbohydrates presented
important role in the improvement of the anthropometry. Also, it is important that this
study encourages the conduction of new research on dietary intervention in the different
contexts of street racing to further elucidate the specific benefits.
