segunda-feira, 23 de fevereiro de 2015

Diferenças nas respostas inflamatórias e metabólicas em exercício intermitente de alta intensidade

 2015 Feb 17. [Epub ahead of print]

Differences in metabolic and inflammatory responses in lower and upper body high-intensity intermittent exercise.

Abstract

PURPOSE:

The purpose of this study was to compare the effect of upper and lower body high-intensity intermittent exercise (HIIE) on immunometabolism profile.

METHODS:

Seven male judo athletes completed two experimental sessions separated by at least 48 h. The athletes completed four bouts of the upper and lower body Wingate tests separated by 3-min recovery periods. The blood samples were collected at rest and immediately after the fourth bout of lower and upper body Wingate tests. Serum was analysed for IL-1ra (Interleukin-1 Receptor Antagonist), interleukins (IL-1) IL-2, IL-4, IL-6, IL-10, TNF-α (tumor necrosis factor alpha), cortisol, glucose, and NEFA (non-ester fatty acid). Peak power (maximum power attained during the 30 s test), mean power were calculated. In addition, after 1 and 2.5-min of each Wingate bout, blood samples from the ear lobe were collected for lactate analysis.

RESULTS:

Our data demonstrated that lower body HIIE promoted a greater metabolic rate (values pre- vs. post-Wingate, for lactate: 1.02 ± 0.16 vs. 14.44 ± 1.08 mmol/L; for glucose: 112.5 ± 16.7 vs. 147.9 ± 23.5 mg/dL) and resulted in higher mechanical (mean power: 621 ± 46 vs. 427 ± 40 W, peak power: 794 ± 61 vs. 602 ± 109 W) performance compared to the upper body HIIE (lactate: 0.85 ± 0.18 vs. 12.69 ± 0.74 mmol/L; for glucose: 115.3 ± 20.4 vs. 123.7 ± 28.6 mg/dL; mean power: 480 ± 46 vs. 341 ± 45 W; and peak power: 672 ± 83 vs. 501 ± 120 W), but NEFA showed a similar response to both conditions, with increased IL-10 levels.

CONCLUSIONS:

In conclusion, our results demonstrated that despite the higher performance in lower body HIIE, the inflammatory response did not differ between exercise modalities.

quinta-feira, 5 de fevereiro de 2015

Judogi azul

No prelo:
Judogi azul afeta o desempenho competitivo quando o chaveamento direcionado não é utilizado: efeitos do sexo, idade e nível da competição
Ursula Julio, Miarka, B., Rosa JP, Giscard Humberto Oliveira LimaMonica Yuri Takito e Franchini, E.
Percept Mot Skills. 2015 Feb 4. [Epub ahead of print]
BLUE JUDOGI MAY BIAS COMPETITIVE PERFORMANCE WHEN SEEDING SYSTEM IS NOT USED: SEX, AGE, AND LEVEL OF COMPETITION EFFECTS .
Julio UF1, Miarka B, Rosa JP, Lima GH, Takito MY, Franchini E.
Author information
Abstract
Summary.-This study evaluated whether the judogi colour (blue or white) could influence a combat outcome (victory or defeat) in 1,233 judo official combats. Sex, age group, and level of competition were also considered in the analysis. Binomial probability tests showed a higher probability of an athlete's winning a combat wearing blue judogi for both sexes, levels of competition (regional and state), and for the athletes of the junior and senior categories. Thus, blue judogi may bias competitive outcome for both sexes in regional and state level competitions and for athletes above junior age