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Abstract Details

Abstract Title

EFFECTS OF BETA-ALANINE SUPPLEMENTATION ON PERFORMANCE AND RECOVERY OF VOLLEYBALL ATHLETES

Abstract Theme

Elite performance

Type Presentation

Poster

Abstract Authors

Presenter Jean Carlos Silvestre - Federal University of São Paulo (Department Science of human movement) - BR
Rodrigo Luiz da Silva Gianoni - Federal University of São Paulo (Department Science of human movement) - BR
Gilmar de Jesus Esteves - Federal University of São Paulo (Department Science of human movement) - BR
Paulo Eduardo de Assis Pereira - Federal University of São Paulo (Department Science of human movement) - BR
Yuri Motoyama - Federal University of São Paulo (Department Science of human movement) - BR
Domingos Pandeló - Federal University of São Paulo (Department Science of human movement) - BR
Kelvin Tanaka - Federal University of São Paulo (Department Science of human movement) - BR
Rafael Yshihara - Federal University of São Paulo (Department Science of human movement) - BR
Paulo Henrique Silva Marques de Azevedo - Federal University of São Paulo (Department Science of human movement) - BR

Presentation Details

Poster Exhibition Site (Local): White - 8        Date: 2 September        Time: 8am to 7pm        Presenter: Jean Silvestre

Abstract Resume

Background: 
Volleyball is characterized for being intense exercise, leading to exacerbated production of hydrogen ions (H +), generating imbalance in the body and leading to fatigue process. The aim of this study
was to analyze the effect of supplementation of beta-alanine in the performance by strength and potency test.


Methods:
Fourteen volleyball players were evaluated on two occasions through strength and potency test. The additional subjects with beta-alanine (BA) or maltodextrin (PL) in a randomized design, double-blind,
during the taper period. The amount of beta-alanine and placebo was 6.4 g/day, 7 times per week, including game days, over a period of 3 weeks. The athletes were evaluated on two occasions through
strength and potency test (jump test), the subjects were submitted to a vertical jump test to determine the elevation of the center of gravity relative to the ground, all held heating lasting 5
minutes, which consisted of jumps activities and then the athletes performed five jumps in the jump test with an interval of 30 seconds between each jump, the maximum height is taken as the arithmetic
average of the three best jumps.

Results:
As a result for strength and power testing, it was not found significant difference between groups, and the values for pre week, 1st week, 2nd week and 3rd week from: 43.56±3.40, 46.06±4.36,
46.25±4.02, 46.17±4.41 and 44.61±4.85, 45.83±5.38, 47.54±4.84, 46.56±5.34 (for BA and PL groups, respectively). In the intragroup analysis, significant difference was found for the BA group compared
to the pre- and post-supplementation (44.02±3.59, 46.98±4.41, p = 0.48). For the same group, a large magnitude of effect size compared to baseline were found for the 1st week (0.752) (44.02±3.59 and
47.13±3.88), a smaller value compared to the 2nd week (0.529) (46.25±4.02), and a high value compared to the 3rd week (0.665). As for the PL group, we found a low magnitude values relative to baseline
with 3 weeks (0.242, 0.28, 0.36, respectively).

Conclusions:
In this sense, we can conclude that BA supplementation may be an effective strategy in taper period to increase strength and power in volleyball athletes.

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