Abstract
This study aims to analyze the effect of a low-carbohydrate high-protein diet to increase the level of antioxidant, decrease inflammation and improve performance of athlete. The research was carried out by experimental research methods, within the design of “Randomized Control Group Pretest Posttest Design”. A sample was taken from 20 people who met the inclusion and exclusion criteria from 30 teenage athletes in PASI East Java sprints. The Data were collected by measuring the sprint results by finish photo camera and laboratory examinations to determine the levels of antioxidants (SOD) and the inflammation degree (TNF-α) in blood. The data were analyzed using multivariate technique (Manova) Hotelling’s method (T2). Hypothesis testing using α = 0.05. The results and conclusions of the study stated that the normal diet had no effect on the variables of sprint running speed, SOD and TNF-α levels. While low-carbohydrate and high-protein diet can increase SOD levels of 211.44/gHb, reduce (TNF-α) at least 0.309 pg/ml, and the average increase in antioxidant activity caused by low-carbohydrate-high-protein diet is 24.989/gHb higher than normal diet, the decrease in the degree of inflammation is 0.196 pg/ml, however, it has no effect on the speed of sprint.
Highlights
The results of several physical tests on athletes, which were held by the central KONI in order to face the Asean Games and Sea Games, indicated that their physical condition was still inadequate
This study aims to determine the effect of giving a low-carbohydrates and high protein diet which can be seen in sprinter athletes by increasing running speed of laboratory for increasing antioxidant activity (SOD), decreasing inflammation (TNF-α)
Food intake analysis The results of the study showed that the actual intake of food consumed by the sample was lower than what was planned before, for example, the expected amount of energy in treatment group was 3035.95 cal/day, the actual intake was 2927.65 cal/day, and it happen on carbohydrates, fats and proteins, in normal diet group and the treatment group, as shown in table 1 before
Summary
The results of several physical tests on athletes, which were held by the central KONI in order to face the Asean Games and Sea Games, indicated that their physical condition was still inadequate. One of the important factors to achieve optimal physical condition is a proper nutrition (Wilmore & Costil, 2004). An athlete who is talented and motivated to Endang Sri Wahjuni, Soetanto Hartono train will not reach his optimal potential without making the right diet/eating choices (Maughan, 2009). It shows that the nutritional aspect is very supportive to achieve an optimal performance (Wilmore & Costill, 2004), one of the efforts to maintain health is to observe the effect of diet on free radicals that occur due to physical exercise, it is expected that the nutritional intake contains high levels of antioxidants. A high amount of free radicals will cause the damage of cell and tissue, it can interfere with the health of an athlete and reduce the athletes performance, it can be seen by measuring the effect on running speed
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