Cinética da creatina quinase em jogadores de futebol profissional em uma temporada competitiva.DOI: 10.5007/1980-0037.2011v13n3p189

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-Soccer is a sport practiced worldwide, on all continents. It is considered an intermittent activity of high intensity and long duration, in which movements that require great strength and speed, such as jumps and sprints, result in high levels of muscle microtrauma, hampering athletes' training and recovery. The present study aimed to evaluate the magnitude of changes in different markers of physiological demand resulting from a soccer match in healthy individuals. Ten healthy male physical education students participated in the study and were evaluated in two matches: the semi-final and final games of the college tournament at the federal university where they studied. Blood samples were collected from each volunteer pre-and post-match. Cortisol, IL-6 and CK concentrations were increased after the match (p < 0.05). Testosterone and alpha-actin concentrations did not change. Our results indicate that changes in some of the acute response markers evaluated in players before and after competitive soccer matches provide important information for planning training or recovery, as well as nutritional strategies for improving performance.

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confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Avaliação da demanda fisiológica aguda no futebol

Coelho

Pimenta

Veneroso

et al. 2013

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“…By setting up parameters that make it possible to visualize physiological adaptations due to training allows any changes to be monitored to which metabolism is submitted during physical activity, so that it is possible to extract the maximum performance of the runners and avoid harmful situations such as overtraining and additionally muscle injuries 4,5 . To prevent these situations there are physiological indicators considered to be important parameters for monitoring the volume and intensity of training such as plasma concentrations of Creatine Kinase (CK) [6][7][8] . The strategies adopted by the runners during races vary depending on the distance and technical level of the race and their objective.…”

Section: Introductionmentioning

confidence: 99%

Alterações dos níveis séricos de creatinina, ácido úrico, creatina kinase e da taxa de filtração glomerular em corredores de “rua”

Morales

Maciel

Jorge

et al. 2013

Changes in serum creatinine, uric acid, creatine kinase and glomerular filtration in street runnersAlterações dos níveis séricos de creatinina, ácido úrico, creatina kinase e da taxa de filtração glomerular em corredores de "rua" Abstract -The strategies adopted by corridors "street" during the evidence from interference of the race distance and levels of technical and physical competition. The objective of this study was to examine the biochemical effects of Creatinine (C), Uric Acid (AU), Creatine Kinase (CK) and Glomerular Filtration Rate (GFR) caused by a test run of "street" of 6 (six) Km participated n=(15) male athletes (40.53 ± 8.65 years) divided into three groups: Group 1 Best Times (G1MT) n = 5, Group 2 Intermediate Times (G2TI) n = 5; Group 3 Times Worst (G3PT) n = 5. Blood samples were collected 30 min before and immediately after the race. Data were analyzed by Two-Way ANOVA, Wilcoxon and Mann Whitney test. It was considered significant levels (p<0.05). The results showed that there were significant increases in serum activities of intra-group (C) in G1MT before: 1,18±0,04 mg.dL-¹ after: 1.60±0.15 mg.dL-¹; G2TI before: 1,04±0,15 mg.dL-¹ after: 1,56±0,21 mg.dL-¹; G3PT before: 1,08±0,13 mg.dL-¹ after: 1,52±0,32 mg.dL-¹ and (AU) G1MT before: 3,80±0,75 mg.dL-¹ after: 4,56±0,94 mg.dL-¹; G2TI before: 4,36±1,62 mg.dL-¹ after: 5,0±1,69 mg.dL-¹; G3PT before: 4,62±1,08 mg.dL-¹ after: 5,42±0,86 mg.dL-¹, while (CK) and (GFR) showed no significant difference. Key words: Athletic performance; Biochemistry; Running. Taxa de Filtração Glomerular (TFG) provocados por uma prova de corrida de "rua" de 6 (seis) Km. Participaram n=(15) atletas masculinos (40,53±8,65 anos) Resumo -As estratégias adotadas pelos corredores de "rua", durante as provas, sofrem interferência da distância da corrida e dos níveis técnico e físico dos competidores. Assim, o objetivo deste estudo foi de examinar os efeitos bioquímicos da Creatinina (C), Ácido Úrico (AU), Creatina Kinase (CK) e da

“…Soccer is considered a high-intensity intermittent activity [1][2][3] with different game patterns between positions 4 , and is characterized by short-duration high-speed runs, jumps, headings, and ball disputes, besides other activities, such as jogging, low-speed running, and walks.The exercise intensity during a soccer match is about 75% of the maximal oxygen uptake (VO 2max ), and great part of the match occurs at anaerobic intensity zones 5 . It should be pointed out that the game lasts for about 90 minutes and that the players run over 10 km per game on average 6,7 .…”

Section: Introductionmentioning

confidence: 99%

Avaliação da demanda energética e frequência cardíaca em diferentes fases durante jogos ao longo de uma competição oficial de futebol.

Coelho

Mortimer

et al. 2012

-The purpose of the present study was to analyze the energy expenditure and heart rate (HR), expressed as mean and maximal heart rate (HR max ), along matches of an official soccer competition. Methods: Eighteen under-20 year old (U-20) soccer players from a first-division Brazilian soccer team were evaluated during 15 matches. The relationship between HR and oxygen uptake (HR/VO 2 relationship) was established, and a linear regression equation was developed for each individual player participating in the study. This equation was then used to determine the oxygen uptake and the corresponding energy expenditure based on the HR values measured during the games. The HR was recorded at 5-second intervals, which were clustered in phases of 15 minutes (0-15 min, 15-30 min e 30-45 min) for each half time (first half [FH] and second half [SH]). Results: The players' oxygen uptake was 308.3 ± 11.9 LO 2 /game and the energy expenditure was 17.3±1.3 Kcal.min -1 and 1,542.9±125.1 Kcal/game. The results showed that there were significant differences between the HR and HR max identified in the first half (FH 15-30 min) compared to the second half (SH 0-15 min and SH 30-45 min), and at FH 30-45 min compared to SH 0-15 min (p<0.05). Conclusions: We concluded that soccer should be considered as an extremely arduous activity for U-20 players due to the high energy expenditure during the matches of an official championship. We also concluded that, during soccer games with young players, FH 15-30 min could be considered the most intense phase, because the highest values of HR and HR max usually occur at this phase. Key words: Correlation; Energy expenditure; Intermittent. Resumo -O objetivo do presente estudo foi a análise do gasto energético e da frequência cardíaca (HR), expressa pela média e pela frequência cardíaca máxima (FC max ), durante jogos de uma competição oficial de futebol. Foram avaliados, durante 15 jogos, dezoito jogadores de futebol da categoria abaixo de 20 anos de idade 420Energy demand and heart rate in soccer Coelho et al.