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Publications (36)
Background: Exercise can be used as a model to understand immunometabolism. Biological data on elite athletes are limited, especially for female athletes, including relevant data on acute-phase proteins and amino acid metabolism. Methods: We analyzed acute-phase proteins and amino acids collected at South American, Pan-American, and Olympic Games f...
Caffeine is a well-described ergogenic aid used to enhance athletic performance. Using animal models can greatly increase our understanding of caffeine’s mechanisms in performance. Here, we adapted an animal weight-lifting exercise model to demonstrate caffeine’s ergogenic effect in rats. Male Wistar rats (315 ± 35 g) were randomly divided into two...
Tyrosine metabolism has an intense role in the synthesis of neurotransmitters. Our study used an untargeted, sportomics-based analysis of urine samples to investigate changes in metabolism during a soccer match in 30 male junior professional soccer players. Samples were collected before and after the match and analyzed using liquid chromatography a...
We have been using sportomics to understand hypermetabolic stress. Cross Combat (CCombat) has recently been initiated as a high-intensity functional training method inspired by CrossFit. We used a CCombat session to induce metabolic stress and evaluated its effects on hydration and kidney function. Blood samples were collected from 16 elite-level p...
Introduction:
Prolonged exercise in the heat can promote dehydration, which could impair ammonia metabolism, cognitive-motor performance, and muscle damage. However, exercise heat acclimation induces physiological adaptations that improve performance, metabolism, and cellular protection. This study aimed to evaluate different dehydration levels an...
Purpose
Both exercise and a ketogenic (low-carbohydrate) diet favor glycogen depletion and increase ammonemia, which can impair physical performance. Caffeine supplementation has been routinely used to improve exercise performance. Herein, the effect of xanthine was evaluated on ammonemia in cyclists who were placed on a ketogenic diet and engaged...
Balikian, P, Gomes de Araujo, G, Prado, ES, Ryan Geraldes, AA, Marinho de Lima, AH, and Mendes, EV. Anaerobic threshold in stand-up paddle: comparison between direct and alternative methods. J Strength Cond Res 36(7): 1896-1900, 2022-The purpose of this study was to test the validity of alternative protocols, mean velocity during 30 minutes of cont...
During exercise, ammonia levels are related to the appearance of both central and peripheral fatigue. Therefore, controlling the increase in ammonia levels is an important strategy in ameliorating the metabolic response to exercise and in improving athletic performance. Free amino acids can be used as substrates for ATP synthesis that produces ammo...
ISSN 1981-9927 versão eletrônica P e r i ó d i c o do I n s t i t u t o B r a s i l e i r o d e P e sq u i s a e E n si n o e m F i s i o l o gi a do E x e r c í c i o w w w. i b p e f e x. c o m. b r / w w w. r b n e. c o m. b r CONSUMO DIETÉTICO E ESTADO DE HIDRATAÇÃO EM CORREDORES DE LONGA DISTÂNCIA RESUMO O objetivo desse trabalho foi descrever...
Keto analogues and amino acids (KAAA) supplementation can reduce blood ammonia concentrations in athletes undergoing high-intensity exercise under both ketogenic and thermoneutral conditions. This study evaluated the acute effects of KAAA supplementation on ammonia metabolism during extenuating endurance exercise in rats fed a ketogenic diet. In al...
This study aimed to verify whether salivary total protein (STP) would reflect anaerobic threshold in elderly athletes subjected to an incremental exercise test.
Methods:
Seven elderly elite athletes (EEA) and six physically active elderly men (PAE) completed a treadmill protocol in which blood and saliva samples were collected.
Results:
Blood l...
We have been using “-Omics” sciences with classic laboratory analyses to understand the systemic metabolic and signaling changes induced by sport and exercise. We called this approach Sportomics. Our samples were collected in situ either during competitions or training to mimic the genuine challenges and conditions faced during sports. Non-targeted...
This study evaluated the acute effect of keto analogue and amino acid (AA-KAAA) supplementation on both white blood cell counts and the established biomarkers of muscle damage during exercise under thermoneutral conditions. Sixteen male cyclists received a ketogenic diet for two days and were divided into two equal groups: a group taking AA-KAAA (K...
O objetivo desse estudo foi avaliar o impacto da reposição hídrica com água de coco sobre o estado de hidratação e cardiovascular drift durante o exercício. Treze voluntários do sexo masculino realizaram três sessões de exercício em cicloergômetro, submetidos a formas distintas de hidratação: grupo sem água (SA); grupo com água (CA); e grupo água d...
O objetivo desse trabalho foi descrever o consumo dietético e o estado de hidratação em corredores de longa distância. Foram avaliados dez corredores do sexo masculino (45,5 ± 21,5 anos), durante uma corrida prolongada (30 km). A ingestão dietética foi determinada utilizando recordatório alimentar de 24 h, antes da corrida prolongada. O valor energ...
Alterations of cerebral function, fatigue and disturbance in cognitive-motor performance can be caused by hyperammonemia and/or hot environmental conditions during exercise. Exercise-induced hyperammonemia can be reduced through supplementation with either amino acids or combined keto analogues and amino acids (KAAA) to improve exercise tolerance....
Objective: To verify the effect of differents hydration status on physical and cognitive-motor performance of athletes submitted to exercise under low heat stress environment. Method: Sixteen athletes, divided into two groups with eight athletes each (G2%: 34.1. ±. 2.3 years; and G3%: 32.5. ±. 2.2 years), performed two hours of cycling session and...
The purpose of this study was to evaluate the hydration status and cognitive-motor performance in athletes during a fast triathlon race in the heat. Twelve triathletes (34 ± 2.7 years) participated in the study. Hydration status was measured by body mass (BM) loss, urine color and urine specific gravity (SG). The cognitive-motor performance was det...
RESUMO O objetivo desse estudo foi avaliar o estado de hidratação e desempenho cognitivo-motor em atletas durante uma prova de fast triathlon no calor. Doze triatletas (34 ± 2,7 anos) participaram do trabalho. O estado de hidratação foi mensurado pela perda de massa corporal (MC), coloração e gravidade específica (GE) urinárias. O desempenho cognit...
RESUMO: O conhecimento prático do estado de hidratação é importante para manutenção das funções fisiológicas. Alterações da massa corporal (MC) e índices urinários têm sido usados como marcadores simples de estado de hidratação. No entanto, exercícios aquáticos induzem alterações funcionais renais, como a diurese. Assim, o objetivo deste estudo foi...
Hyperammonaemia is related to both central and peripheral fatigue during exercise. Hyperammonaemia in response to exercise can be reduced through supplementation with either amino acids or combined keto analogues and amino acids (KAAA). In the present study, we determined the effect of short-term KAAA supplementation on ammonia production in subjec...
During exercise, ammonia levels are related to the appearance of both central and peripheral fatigue. Therefore, controlling the increase in ammonia levels is an important strategy in ameliorating the metabolic response to exercise and in improving athletic performance. Free amino acids can be used as substrates for ATP synthesis that produces ammo...
Introduction: The physical training of athletes requires a good state of hydration, because the maintenance of adequate levels of water can favor the performance. The objective of the study is to evaluate the hydration state of swimmers from the city of Aracaju after training sessions with different forms of hydric replacement. Materials and Method...
Introdução: O treinamento físico exige do atleta um bom estado de hidratação, pois a manutenção de níveis adequados de água pode favorecer o desempenho. O objetivo deste estudo foi avaliar o estado de hidratação de nadadores aracajuanos após sessões de treinamento com formas distintas de reposição hídrica. Materiais e Métodos: Oito nadadores (24,25...
a) and body mass in mice which were submitted to Hypercholesterolemia and strength and aerobic physical trainings. Fit Perf J. 2008 May-Jun;7(3):137-44. ABSTRACT Introduction: The objective of the study was to verify the effects provoked by strength and aerobic exercises on the lipoproteic plasmatic concentrations of lipoprotein(a) [Lp(a)] and body...
Introdução: O objetivo do estudo foi verificar os efeitos provocados pelos exercícios de força e aeróbico sobre as concentrações plasmáticas lipoprotéicas da lipoproteína(a) [Lp(a)] e massa corporal, em ratos submetidos a uma dieta hipercolesterolêmica. Materiais e Métodos: Foram utilizados 43 ratos machos da linhagem Wistar, com oito semanas, pesa...
Objetivo: Verificar as alterações dos níveis séricos lipídicos/lipoprotéicos (HDL-c, CT, TG, VLDL-c, LDL-c) em cadetes da AMAN, ocorridas após um programa de exercício físico aeróbico com intensidade na zona do Fatmax (55 ± 3% a 72 ± 4% do VO2máx). Métodos: Participaram do estudo vinte e nove cadetes do sexo masculino, com idades entre 20 e 22 anos...
PRADO, E. S., PEIXOTO, J. C., SILVA, L. M. L., PINHEIRO, J. C. S., FERRÃO, M. L. D., ALMEIDA, R. D., MELO, L. A., DANTAS, E. H. M. Dieta lipídica e sua relação com os níveis séricos lipídicos/lipoprotéicos em cadetes da Academia Militar das Agulhas Negras (AMAN). R. bras. Ci e Mov. 2004; 12(2): 57-62. The present study verified the degree of correl...
