Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Rodrigo Alexis Lazo Osório is active.

Publication


Featured researches published by Rodrigo Alexis Lazo Osório.


Medicine and Science in Sports and Exercise | 2010

Low-Intensity Swimming Training Partially Inhibits Lipopolysaccharide-Induced Acute Lung Injury

Daniel Souza Ramos; Clarice Rosa Olivo; Fernanda Degobbi Tenório Quirino dos Santos Lopes; Alessandra Choqueta de Toledo; Milton A. Martins; Rodrigo Alexis Lazo Osório; Marisa Dolhnikoff; Wellington Ribeiro; Rodolfo de Paula Vieira

BACKGROUND Aerobic exercise decreases pulmonary inflammation and remodeling in experimental models of allergic asthma. However, the effects of aerobic exercise on pulmonary inflammation of nonallergic origin, such as in experimental models of acute lung injury induced by lipopolysaccharide (LPS), have not been evaluated. OBJECTIVE The present study evaluated the effects of aerobic exercise in a model of LPS-induced acute lung injury. METHODS BALB/c mice were divided into four groups: Control, Aerobic Exercise, LPS, and Aerobic Exercise + LPS. Swimming tests were conducted at baseline and at 3 and 6 wk. Low-intensity swimming training was performed for 6 wk, four times per week, 60 min per session. Intranasal LPS (1 mg x kg(-1) (60 microg per mouse)) was instilled 24 h after the last swimming physical test in the LPS and Aerobic Exercise + LPS mice, and the animals were studied 24 h after LPS instillation. Exhaled nitric oxide, respiratory mechanics, total and differential cell counts in bronchoalveolar lavage, and lung parenchymal inflammation and remodeling were evaluated. RESULTS LPS instillation resulted in increased levels of exhaled nitric oxide (P < 0.001), higher numbers of neutrophils in the bronchoalveolar lavage (P < 0.001) and in the lung parenchyma (P < 0.001), and decreased lung tissue resistance (P < 0.05) and volume proportion of elastic fibers (P < 0.01) compared with the Control group. Swim training in LPS-instilled animals resulted in significantly lower exhaled nitric oxide levels (P < 0.001) and fewer neutrophils in the bronchoalveolar lavage (P < 0.001) and the lung parenchyma (P < 0.01) compared with the LPS group. CONCLUSIONS These results suggest that low-intensity swimming training inhibits lung neutrophilic inflammation, but not remodeling and impaired lung mechanics, in a model of LPS-induced acute lung injury.


Revista Brasileira De Medicina Do Esporte | 2006

Influência da suplementação aguda e crônica de creatina sobre as concentrações sanguíneas de glicose e lactato de ratos Wistar

Renato Aparecido de Souza; Roberto Mussoline dos Santos; Rodrigo Alexis Lazo Osório; José Carlos Cogo; Antônio Carlos Guimarães Prianti Júnior; Rodrigo Álvaro Brandão Lopes Martins; Wellington Ribeiro

Estudios recientes sugieren que la suplementacion de creatina puede interferir con la captacion de glicosis y la produccion de lactato durante la actividad fisica. El objetivo de este estudio ha sido el de investigar los efectos de la suplementacion aguda (5g.kg1 durante 1 semana) y cronica (1g.kg1 durante 8 semanas) de creatina sobre las concentraciones sanguineas de glicosis y lactato en ratones sedentarios y ejercitados (natacion a 80% de carga maxima tolerada). Setenta y dos ratones Wistar machos (240 ± 10g) fueron utilizados y divididos igualmente en 4 grupos experimentales (n = 18): CON - ratones sedentarios no suplementados; NAT - ratones ejercitados no suplementados; CRE - ratones sedentarios y suplementados; CRE + NAT - ratones ejercitados e suplementados. Las muestras sanguineas se obtuvieron antes y despues del test de determinacion de carga maxima realizado semanalmente durante todo el experimento. Antes del test de carga maxima, con excepcion del grupo CRE-NAT (3-5 semanas) que presento concentraciones plasmaticas de glicosis inferiores en relacion a los demas grupos, los demas resultados fueron semejantes entre los grupos experimentales. Despues del test de carga maxima todos los grupos experimentales presentaron reduccion en las concentraciones plasmaticas de glicosis y aumento en las concentraciones plasmaticas de lactato. A pesar de esto, con respecto a la glicosis, esta reduccion fue significativamente (p < 0.05) pronunciada en los grupos CRE (1-4 semanas) y CRE + NAT (1-8 semanas) y con respecto al lactato, el aumento fue significativamente (p < 0.05) menor en los grupos CRE (1-2 semanas) y CRE + NAT (1-8 semanas). Los resultados encontrados sugieren que el regimen adoptado de suplementacion influencio el perfil metabolico glicemico, minimizo el acumulo de lactato y potencio la maxima carga suportada en los animales suplementados.


Cranio-the Journal of Craniomandibular Practice | 2005

Incidence of Systemic Joint Hypermobility and Temporomandibular Joint Hypermobility in Pregnancy

Erika B. Silveira; Mariano Rocabado; Adriana K. Russo; José Carlos Cogo; Rodrigo Alexis Lazo Osório

Abstract The purpose of this study was to establish a possible correlation between systemic hypermobility and temporomandibular hypermobility during pregnancy. One hundred (100) healthy pregnant women were evaluated: 7% in the first trimester (1T), 38% in the second trimester (2T), and 55% in the third trimester (3T) of gestation. In the series, the authors analyzed systemic joint hypermobility (SJH), range of mandibular movement (MMR), head and shoulder posture, head lateralization, and the presence of noise, pain, and parafunction in the temporomandibular joint. They observed that pain is present to a mild degree mostly in the head and ears of all pregnant women who presented with pain. Most of the subjects had some type of parafunction, but only 42.8% had noises. Mild SJH was seen in 50% of the 2T and 3T subjects, and in 28.5% of 1T subjects. Mild mandibular hypermobility was found for jaw opening (46%) and lateralization to the right (44%) or to the left (46%). Most of the subjects had hypomobility for jaw protrusion and retraction. The subjects had head protrusion and anterior posture as a result of the change in their center of gravity brought about by pregnancy. The authors found no association between systemic joint hypermobility (SJH) and temporomandibular hypermobility, although hormonal changes and complex factors during pregnancy may represent a risk factor for both types of mobility change.


Photochemistry and Photobiology | 2013

Low‐level Laser Therapy Ameliorates CCl4‐induced Liver Cirrhosis in Rats

Manoel Carneiro Oliveira-Junior; Aldaíza Salomão Monteiro; Ernesto Cesar Pinto Leal-Junior; Egberto Munin; Rodrigo Alexis Lazo Osório; Wellington Ribeiro; Rodolfo de Paula Vieira

This study investigated the effects of low‐level laser therapy (LLLT) in the liver function, structure and inflammation in a experimental model of carbon tetrachloride (CCl4)‐induced liver cirrhosis. Wistar rats were divided into Control, LLLT, CCl4 and CCl4+LLLT groups. CCl4 groups received CCl4 (0.4 g kg−1; i.p.), three times a week, for 12 weeks. A 830 nm LLLT was performed with a continuous wave, 35 mW, 2.5 J cm−2 per point, applied to four points of the liver (right and left upper and lower extremities, in the four lobes of the liver) for 2 weeks. Liver structure and inflammation (cirrhotic areas, collagen deposition, inflammation, density of Kupffer and hepatic stellate cells) and function (aspartate aminotransferase, alkaline phosphatase, gamma glutamyltransferase, lactate dehydrogenase, total proteins and globulins) were evaluated. LLLT significantly reduced CCl4‐increased aspartate aminotransferase (P < 0.001), alkaline phosphatase (P < 0.001), gamma‐glutamyl transferase (P < 0.001) and lactate dehydrogenase (P < 0.01) activity, as well as total proteins (P < 0.05) and globulins (P < 0.01). LLLT also reduced the number of cirrhotic areas, the collagen accumulation and the hepatic inflammatory infiltrate. Of note, LLLT reduced CCl4‐increased number of Kupffer cells (P < 0.05) and hepatic stellate cells (P < 0.05). We conclude that LLLT presents beneficial effects on liver function and structure in an experimental model of CCl4‐induced cirrhosis.


Clinical Rehabilitation | 2012

Respiratory biofeedback accuracy in chronic renal failure patients: a method comparison

Rogério Ramos Figueiredo; Antonio Am Castro; Fernanda Mg Gonzaga Napoleone; Leina Faray; Alderico Rodrigues de Paula Júnior; Rodrigo Alexis Lazo Osório

Objective: To analyse respiratory biofeedback effects on respiratory muscle strengthening in chronic renal failure patients. Design: Randomized controlled study. Setting: Nephrology and dialysis centre. Subjects and intervention: Forty-one end-stage renal patients on haemodialysis treatment were allocated into three groups: control (n = 10), G-1 (inspiratory muscle training using Threshold IMT device; n = 16) and G-2 (biofeedback; n = 15) and given respiratory muscle training (three sessions/week for six weeks). Main measures: Forced vital capacity (FVC), expiratory volume in the first second (FEV1), FEV1/FVC ratio, maximal voluntary ventilation (MVV) and maximal inspiratory (MIP) and expiratory (MEP) pressures were measured before and after the respiratory muscle training programme. Results: Both training methods were efficient since we found an increase after training in the FVC in the G-1 group (from 2.45 ± 0.17 to 2.85 ± 0.16; P = 0.001) and in the G-2 group (from 2.35 ± 0.19 to 2.55 ± 0.19; P = 0.007), in the FEV1 in G-1 (from 2.18 ± 0.16 to 2.46 ± 0.14; P = 0.01) and in G-2 (from 1.97 ± 0.17 to 2.20 ± 0.15; P < 0.0001), MIP in G-1 (from 70.63 ± 4.03 to 108.75 ± 7.41; P < 0.0001) and in G-2 (from 67.67 ± 5.02 to 96.33 ± 8.30; P < 0.001) and MEP in G-1 (from 73.13 ± 5.10 to 82.50 ± 6.74; P = 0.007) and in G-2 (from 67.67 ± 5.41 to 76.00 ± 4.29; P = 0.002). Conclusions: Respiratory biofeedback is efficient as a respiratory muscle training modality for patients with chronic renal failure.


Revista Brasileira De Medicina Do Esporte | 2005

Efeitos da suplementação aguda de aspartato de arginina na fadiga muscular em voluntários treinados

Ricardo Pombo Sales; Carlos Eduardo César Miné; Andréia Dellú Franco; Érika Lima Rodrigues; Renato de Souza e Silva; José Carlos Cogo; Rodrigo Álvaro Brandão Lopes-Martins; Rodrigo Alexis Lazo Osório; Wellington Ribeiro

La actividad fisica influencia los mecanismos especificos responsables por la reduccion de la produccion de fuerza y por consiguiente a la fatiga. La preocupacion por mejorar la accion fisica se ha propuesto constantemente; nosotros hemos observamos que los estudios prestan la atencion para reducir acumulaciones del metabolitos que reducen la fatiga durante el intenso ejercicio fisico, mientras se usan los aminoacidos conocidos que puedan inducir cambios metabolicos, entre ellos la arginina. El estudio presente tiene como objetivo el analizar los estudios del efecto de la suplementacion de aspartato del arginina en individuos saludables sometidos a un protocolo de agotamiento en un cicloergometro. Se usaron 12 individuos especializados de sexo masculino, de edad de 22,6 ± 3,5 anos. Ellos lograron tres pruebas de 90 minutos despues de la administracion en una sola dosis del aspartato del arginina o de solucion placebo, en un cicloergometro donde se incrementaron las cargas hasta el agotamiento. Se obtuvieron las muestras sanguineas para los analisis bioquimicos como de creatinina, urea, glucosa y lactato. No se encontraron diferencias con las estadisticas al comparar los valores de frecuencia maxima del corazon FMC, Tiempo Maximo y Carga Maxima y tambien al comparar los resultados anteriores y subsecuentes a la prueba para el urea, creatinina y glucosa. Las concentraciones del lactato (el mmol/l) si, presentaron la diferencia estadistica al comparar el pre-prueba de valores (Controles: 2,2 ± 0,14; Arginina: 2,43 ± 0,23; Placebo: 2,26 ± 0,11) con el power-proof de valores (Control 10,35 ± 0,57; Arginina: 12,07 ± 0,88; Placebo: 12,2 ± 0,96), p < 0,001. Los resultados principales de este estudio indican que la administracion marcada de aspartato del arginina no fue demostrada aumentando la tolerancia a la fatiga de los individuos estimados y tratados en el protocolo de prueba incremental al agotamiento. Asi, podemos concluir que la dosis usada no fue capaz de aumentar la tolerancia a la fatiga muscular.The physical activity influences specific mechanisms responsible by a reduction in the power production, and consequently on the fatigue. It has been proposed premises to improve the physical performance, and we observed that some studies have been focused on the reduction of the metabolites that decrease the fatigue on intense physical exercising, using aminoacids known for their properties to induce to metabolic changes, and among these, it is the arginine. The present study had the purpose to study the effects of the acute arginine aspartate supplement in trained healthy individuals submitted to an exhaustion protocol on ergonomic bicycle. Twelve 22.6 ± 3.5 years old trained individuals were used in the research. After taking a single dose of arginine aspartate or a placebo solution, they performed three 90 minute test on an ergonomic bicycle to which load increments were added up to reaching the exhaustion. The blood samples were obtained through biochemical analysis, such as: creatinine, urea, glycosis, and lactate. It was found no statistical differences upon the comparison of the Maximal Heart Rate, Maximal Time and Load, and also comparing to the previous and later results on the urea, creatinine and glycosis tests. The lactate concentrations (mmol/l) presented statistical differences compared to the pre-test values (Control: 2.2 ± 0.14; Arginine: 2.43 ± 0.23; Placebo: 2.26 ± 0.11) to the post-test values (Control 10.35 ± 0.57; Arginine: 12.07 ± 0.88; Placebo: 12.2 ± 0.96), p < 0.001. The main results found in this study indicate that the acute administration of the arginine aspartate did not show effective to increase the fatigue tolerance in the individuals evaluated and treated in the incremental test protocol up to the exhaustion. Thus, it can be concluded that the dosage used was not able to increase the muscular fatigue tolerance.


Revista Brasileira De Medicina Do Esporte | 2006

Influence of the short and long term supplementation of creatine on the plasmatic concentrations of glucose and lactate in Wistar rats

Renato Aparecido de Souza; Roberto Mussoline dos Santos; Rodrigo Alexis Lazo Osório; José Carlos Cogo; Antônio Carlos Guimarães Prianti Júnior; Rodrigo Álvaro Brandão Lopes Martins; Wellington Ribeiro

Estudios recientes sugieren que la suplementacion de creatina puede interferir con la captacion de glicosis y la produccion de lactato durante la actividad fisica. El objetivo de este estudio ha sido el de investigar los efectos de la suplementacion aguda (5g.kg1 durante 1 semana) y cronica (1g.kg1 durante 8 semanas) de creatina sobre las concentraciones sanguineas de glicosis y lactato en ratones sedentarios y ejercitados (natacion a 80% de carga maxima tolerada). Setenta y dos ratones Wistar machos (240 ± 10g) fueron utilizados y divididos igualmente en 4 grupos experimentales (n = 18): CON - ratones sedentarios no suplementados; NAT - ratones ejercitados no suplementados; CRE - ratones sedentarios y suplementados; CRE + NAT - ratones ejercitados e suplementados. Las muestras sanguineas se obtuvieron antes y despues del test de determinacion de carga maxima realizado semanalmente durante todo el experimento. Antes del test de carga maxima, con excepcion del grupo CRE-NAT (3-5 semanas) que presento concentraciones plasmaticas de glicosis inferiores en relacion a los demas grupos, los demas resultados fueron semejantes entre los grupos experimentales. Despues del test de carga maxima todos los grupos experimentales presentaron reduccion en las concentraciones plasmaticas de glicosis y aumento en las concentraciones plasmaticas de lactato. A pesar de esto, con respecto a la glicosis, esta reduccion fue significativamente (p < 0.05) pronunciada en los grupos CRE (1-4 semanas) y CRE + NAT (1-8 semanas) y con respecto al lactato, el aumento fue significativamente (p < 0.05) menor en los grupos CRE (1-2 semanas) y CRE + NAT (1-8 semanas). Los resultados encontrados sugieren que el regimen adoptado de suplementacion influencio el perfil metabolico glicemico, minimizo el acumulo de lactato y potencio la maxima carga suportada en los animales suplementados.


Revista Brasileira De Medicina Do Esporte | 2005

Effects of the acute arginine aspartate supplement on the muscular fatigue in trained volunteers

Ricardo Pombo Sales; Carlos Eduardo César Miné; Andréia Dellú Franco; Érika Lima Rodrigues; Renato de Souza e Silva; José Carlos Cogo; Rodrigo Álvaro Brandão Lopes-Martins; Rodrigo Alexis Lazo Osório; Wellington Ribeiro

La actividad fisica influencia los mecanismos especificos responsables por la reduccion de la produccion de fuerza y por consiguiente a la fatiga. La preocupacion por mejorar la accion fisica se ha propuesto constantemente; nosotros hemos observamos que los estudios prestan la atencion para reducir acumulaciones del metabolitos que reducen la fatiga durante el intenso ejercicio fisico, mientras se usan los aminoacidos conocidos que puedan inducir cambios metabolicos, entre ellos la arginina. El estudio presente tiene como objetivo el analizar los estudios del efecto de la suplementacion de aspartato del arginina en individuos saludables sometidos a un protocolo de agotamiento en un cicloergometro. Se usaron 12 individuos especializados de sexo masculino, de edad de 22,6 ± 3,5 anos. Ellos lograron tres pruebas de 90 minutos despues de la administracion en una sola dosis del aspartato del arginina o de solucion placebo, en un cicloergometro donde se incrementaron las cargas hasta el agotamiento. Se obtuvieron las muestras sanguineas para los analisis bioquimicos como de creatinina, urea, glucosa y lactato. No se encontraron diferencias con las estadisticas al comparar los valores de frecuencia maxima del corazon FMC, Tiempo Maximo y Carga Maxima y tambien al comparar los resultados anteriores y subsecuentes a la prueba para el urea, creatinina y glucosa. Las concentraciones del lactato (el mmol/l) si, presentaron la diferencia estadistica al comparar el pre-prueba de valores (Controles: 2,2 ± 0,14; Arginina: 2,43 ± 0,23; Placebo: 2,26 ± 0,11) con el power-proof de valores (Control 10,35 ± 0,57; Arginina: 12,07 ± 0,88; Placebo: 12,2 ± 0,96), p < 0,001. Los resultados principales de este estudio indican que la administracion marcada de aspartato del arginina no fue demostrada aumentando la tolerancia a la fatiga de los individuos estimados y tratados en el protocolo de prueba incremental al agotamiento. Asi, podemos concluir que la dosis usada no fue capaz de aumentar la tolerancia a la fatiga muscular.The physical activity influences specific mechanisms responsible by a reduction in the power production, and consequently on the fatigue. It has been proposed premises to improve the physical performance, and we observed that some studies have been focused on the reduction of the metabolites that decrease the fatigue on intense physical exercising, using aminoacids known for their properties to induce to metabolic changes, and among these, it is the arginine. The present study had the purpose to study the effects of the acute arginine aspartate supplement in trained healthy individuals submitted to an exhaustion protocol on ergonomic bicycle. Twelve 22.6 ± 3.5 years old trained individuals were used in the research. After taking a single dose of arginine aspartate or a placebo solution, they performed three 90 minute test on an ergonomic bicycle to which load increments were added up to reaching the exhaustion. The blood samples were obtained through biochemical analysis, such as: creatinine, urea, glycosis, and lactate. It was found no statistical differences upon the comparison of the Maximal Heart Rate, Maximal Time and Load, and also comparing to the previous and later results on the urea, creatinine and glycosis tests. The lactate concentrations (mmol/l) presented statistical differences compared to the pre-test values (Control: 2.2 ± 0.14; Arginine: 2.43 ± 0.23; Placebo: 2.26 ± 0.11) to the post-test values (Control 10.35 ± 0.57; Arginine: 12.07 ± 0.88; Placebo: 12.2 ± 0.96), p < 0.001. The main results found in this study indicate that the acute administration of the arginine aspartate did not show effective to increase the fatigue tolerance in the individuals evaluated and treated in the incremental test protocol up to the exhaustion. Thus, it can be concluded that the dosage used was not able to increase the muscular fatigue tolerance.


Revista Brasileira De Medicina Do Esporte | 2006

Influencia de la suplementación aguda y crónica de creatina sobre las concentraciones sanguíneas de glicosis y lactato en ratones Wistar

Renato Aparecido de Souza; Roberto Mussoline dos Santos; Rodrigo Alexis Lazo Osório; José Carlos Cogo; Antônio Carlos Guimarães Prianti Júnior; Rodrigo Álvaro Brandão Lopes Martins; Wellington Ribeiro

Estudios recientes sugieren que la suplementacion de creatina puede interferir con la captacion de glicosis y la produccion de lactato durante la actividad fisica. El objetivo de este estudio ha sido el de investigar los efectos de la suplementacion aguda (5g.kg1 durante 1 semana) y cronica (1g.kg1 durante 8 semanas) de creatina sobre las concentraciones sanguineas de glicosis y lactato en ratones sedentarios y ejercitados (natacion a 80% de carga maxima tolerada). Setenta y dos ratones Wistar machos (240 ± 10g) fueron utilizados y divididos igualmente en 4 grupos experimentales (n = 18): CON - ratones sedentarios no suplementados; NAT - ratones ejercitados no suplementados; CRE - ratones sedentarios y suplementados; CRE + NAT - ratones ejercitados e suplementados. Las muestras sanguineas se obtuvieron antes y despues del test de determinacion de carga maxima realizado semanalmente durante todo el experimento. Antes del test de carga maxima, con excepcion del grupo CRE-NAT (3-5 semanas) que presento concentraciones plasmaticas de glicosis inferiores en relacion a los demas grupos, los demas resultados fueron semejantes entre los grupos experimentales. Despues del test de carga maxima todos los grupos experimentales presentaron reduccion en las concentraciones plasmaticas de glicosis y aumento en las concentraciones plasmaticas de lactato. A pesar de esto, con respecto a la glicosis, esta reduccion fue significativamente (p < 0.05) pronunciada en los grupos CRE (1-4 semanas) y CRE + NAT (1-8 semanas) y con respecto al lactato, el aumento fue significativamente (p < 0.05) menor en los grupos CRE (1-2 semanas) y CRE + NAT (1-8 semanas). Los resultados encontrados sugieren que el regimen adoptado de suplementacion influencio el perfil metabolico glicemico, minimizo el acumulo de lactato y potencio la maxima carga suportada en los animales suplementados.


Revista Brasileira De Medicina Do Esporte | 2005

Efectos de la suplementación aguda de aspartato de arginina en la fatiga muscular en voluntarios entrenados

Ricardo Pombo Sales; Carlos Eduardo César Miné; Andréia Dellú Franco; Érika Lima Rodrigues; Renato de Souza e Silva; José Carlos Cogo; Rodrigo Álvaro Brandão Lopes-Martins; Rodrigo Alexis Lazo Osório; Wellington Ribeiro

La actividad fisica influencia los mecanismos especificos responsables por la reduccion de la produccion de fuerza y por consiguiente a la fatiga. La preocupacion por mejorar la accion fisica se ha propuesto constantemente; nosotros hemos observamos que los estudios prestan la atencion para reducir acumulaciones del metabolitos que reducen la fatiga durante el intenso ejercicio fisico, mientras se usan los aminoacidos conocidos que puedan inducir cambios metabolicos, entre ellos la arginina. El estudio presente tiene como objetivo el analizar los estudios del efecto de la suplementacion de aspartato del arginina en individuos saludables sometidos a un protocolo de agotamiento en un cicloergometro. Se usaron 12 individuos especializados de sexo masculino, de edad de 22,6 ± 3,5 anos. Ellos lograron tres pruebas de 90 minutos despues de la administracion en una sola dosis del aspartato del arginina o de solucion placebo, en un cicloergometro donde se incrementaron las cargas hasta el agotamiento. Se obtuvieron las muestras sanguineas para los analisis bioquimicos como de creatinina, urea, glucosa y lactato. No se encontraron diferencias con las estadisticas al comparar los valores de frecuencia maxima del corazon FMC, Tiempo Maximo y Carga Maxima y tambien al comparar los resultados anteriores y subsecuentes a la prueba para el urea, creatinina y glucosa. Las concentraciones del lactato (el mmol/l) si, presentaron la diferencia estadistica al comparar el pre-prueba de valores (Controles: 2,2 ± 0,14; Arginina: 2,43 ± 0,23; Placebo: 2,26 ± 0,11) con el power-proof de valores (Control 10,35 ± 0,57; Arginina: 12,07 ± 0,88; Placebo: 12,2 ± 0,96), p < 0,001. Los resultados principales de este estudio indican que la administracion marcada de aspartato del arginina no fue demostrada aumentando la tolerancia a la fatiga de los individuos estimados y tratados en el protocolo de prueba incremental al agotamiento. Asi, podemos concluir que la dosis usada no fue capaz de aumentar la tolerancia a la fatiga muscular.The physical activity influences specific mechanisms responsible by a reduction in the power production, and consequently on the fatigue. It has been proposed premises to improve the physical performance, and we observed that some studies have been focused on the reduction of the metabolites that decrease the fatigue on intense physical exercising, using aminoacids known for their properties to induce to metabolic changes, and among these, it is the arginine. The present study had the purpose to study the effects of the acute arginine aspartate supplement in trained healthy individuals submitted to an exhaustion protocol on ergonomic bicycle. Twelve 22.6 ± 3.5 years old trained individuals were used in the research. After taking a single dose of arginine aspartate or a placebo solution, they performed three 90 minute test on an ergonomic bicycle to which load increments were added up to reaching the exhaustion. The blood samples were obtained through biochemical analysis, such as: creatinine, urea, glycosis, and lactate. It was found no statistical differences upon the comparison of the Maximal Heart Rate, Maximal Time and Load, and also comparing to the previous and later results on the urea, creatinine and glycosis tests. The lactate concentrations (mmol/l) presented statistical differences compared to the pre-test values (Control: 2.2 ± 0.14; Arginine: 2.43 ± 0.23; Placebo: 2.26 ± 0.11) to the post-test values (Control 10.35 ± 0.57; Arginine: 12.07 ± 0.88; Placebo: 12.2 ± 0.96), p < 0.001. The main results found in this study indicate that the acute administration of the arginine aspartate did not show effective to increase the fatigue tolerance in the individuals evaluated and treated in the incremental test protocol up to the exhaustion. Thus, it can be concluded that the dosage used was not able to increase the muscular fatigue tolerance.

Collaboration


Dive into the Rodrigo Alexis Lazo Osório's collaboration.

Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Researchain Logo
Decentralizing Knowledge