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Search Results: 1 - 10 of 182711 matches for " Renato Aparecido de Souza "
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Rh2(CF3CONH)4: The First Biological Assays of a Rhodium (II) Amidate
Breno Pannia Espósito,Szulim Ber Zyngier,Aparecido Ribeiro de Souza,Renato Najjar
Metal-Based Drugs , 1997, DOI: 10.1155/mbd.1997.333
Abstract:
Maximal lactate steady state and the upper boundary of heavy intensity domain in trained cyclists
Luis Fabiano Barbosa,Mariana Rosada de Souza,Jailton Gregório Pelarigo,Renato Aparecido Corrêa Caritá
Revista Brasileira de Cineantropometria e Desempenho Humano , 2009,
Abstract: The objective of this study was to determine the validity of maximum lactate steady state (MLSS) for the identification of the upper limit of the heavy-intensity domain in well-trained cyclists. Fourteen male cyclists (25.5 ± 4.4 years, 69.5 ± 7.8 kg, 175.8 ± 7.5 cm) underwent the following tests on different days: incremental exercise test until exhaustion to determine peak oxygen uptake (VO2peak), and 2 to 4 constant submaximal load tests to determine MLSS. VO2 obtained in the 30th min was significantly higher than that obtained in the 3rd min of exercise performed at 100% MLSS (3379.3 ± 250.1 vs. 3496.7 ± 280.2 ml/min, p<0.05) and 105% MLSS (3439.5 ± 289.3 vs. 3545.5 ± 303.2 ml/min, p<0.05). VO2 obtained in the 30th min of exercise performed at 100% and 105% MLSS was significantly lower than VO2peak (3978.6 ± 296.2 ml/min, p>0.05). These results suggest that during heavy exercise (MLSS) VO2 does not present stability when values obtained around the 3rd minute of exercise are used as reference. MLSS does not seem to be the upper limit of the heavy-intensity domain in trained subjects since VO2peak is not reached by the end of 30 min of exercise when exercise is performed above this intensity (~ 5%).
EFFECT OF REST INTERVAL LENGTH ON THE VOLUME COMPLETED DURING UPPER BODY RESISTANCE EXERCISE
Humberto Miranda,Roberto Sim?o,Leonardo Marmo Moreira,Renato Aparecido de Souza
Journal of Sports Science and Medicine , 2009,
Abstract: The purpose of the current study was to compare the workout volume (sets x resistance x repetitions per set) completed during two upper body resistance exercise sessions that incorporated 1 minute versus 3 minute rest intervals between sets and exercises. Twelve trained men completed two experimental sessions that consisted of 5 upper body exercises (i.e. barbell bench press, incline barbell bench press, pec deck flye, barbell lying triceps extension, triceps pushdown) performed for three sets with an 8-RM load. The two experimental sessions differed only in the length of the rest interval between sets and exercises; one session with a 1-minute and the other session with a 3-minute rest interval. The results demonstrated that for each exercise, significantly greater workout volume was completed when resting 3 minutes between sets and exercises (p < 0.05). These results indicate that during a resistance exercise session, if sufficient time is available, resting 3 minutes between sets and exercises allows greater workout volume for the upper body exercises examined
Distribution of Rhodium in Mice Submitted to Treatment With the Adduct of Rhodium Propionate and Sodium Isonicotinate
Aparecido Ribeiro de Souza,Renato Najjar,Elizabeth de Oliveira,Szulim Ber Zyngier
Metal-Based Drugs , 1997, DOI: 10.1155/mbd.1997.39
Abstract:
Acute cardiovascular responses in a virtual environment simulate by Nintendo Wii. http://dx.doi.org/10.5007/1980-0037.2013v15n1p60
Renato Aparecido de Souza,Lucas Gon?alves da Cruz,Priscila Silva de Carvalho,Fabiano Fernandes da Silva
Revista Brasileira de Cineantropometria e Desempenho Humano , 2013,
Abstract: It has recently been verified using the Nintendo Wii in the health context. The aim of this study was to analyze the acute cardiovascular responses monitored by the behavior of heart rate, systolic blood pressure, diastolic blood pressure and double product in an environment virtually simulated by Nintendo Wii. The sample was consisted of 18 health college students with mean age 22.07 ± 1.34 years. The variables were observed with use of delta analysis (post value – prior value) after 25 basketball shoots in two experimental situations: (I) seating and (II) jumping vertically. The results suggest the physical activity in a virtual environment emulated by Nintendo Wii is able to change the acute cardiovascular responses, mainly when performed in association with vertical jumps. Thus, the results support the feasibility use of the Nintendo Wii in training programs and favor its indication more securely.
Efeito da recupera??o na máxima fase estável de lactato sanguíneo
Souza, Mariana Rosada de;Barbosa, Luis Fabiano;Caritá, Renato Aparecido Corrêa;Denadai, Benedito Sérgio;Greco, Camila Coelho;
Motriz: Revista de Educa??o Física , 2011, DOI: 10.5016/1980-6574.2011v17n2p311
Abstract: the objective of this study was to compare the power corresponding to maximal lactate steady state determined through continuous (mlssc) and intermittent protocol with active recovery (mlssi). ten trained male cyclists (25 ± 4 yr., 72.5 ± 10.6 kg, 178.5 ± 4.0 cm), performed the following tests on a cycle ergometer: (1) incremental test until voluntary exhaustion to determine the maximal power (pmax); (2) two to five constant workload tests to determine mlssc, and; 3) two to three constant workload tests to determine mlssi, consisting on eight repetitions of four minutes interspersed by two minutes of recovery at 50% pmax. the mlssc (273.2 ± 21.4 w) was significantly lower than mlssi (300.5 ± 23.9 w). with base on these data, it can be verified that the intermittent exercise mode utilized in this study, allows an increase of 10% approximately, in the exercise intensity corresponding to mlss.
Respostas cardiovasculares agudas em ambiente virtualmente simulado pelo Nintendo Wii
Souza, Renato Aparecido de;Cruz, Lucas Gon?alves da;Carvalho, Priscila Silva de;Silva, Fabiano Fernandes da;Carvalho, Wellington Roberto Gomes de;
Revista Brasileira de Cineantropometria & Desempenho Humano , 2013, DOI: 10.5007/1980-0037.2013v15n1p60
Abstract: it has recently been verified using the nintendo wii in the health context. the aim of this study was to analyze the acute cardiovascular responses monitored by the behavior of heart rate, systolic blood pressure, diastolic blood pressure and double product in an environment virtually simulated by nintendo wii. the sample was consisted of 18 health college students with mean age 22.07 ± 1.34 years. the variables were observed with use of delta analysis (post value - prior value) after 25 basketball shoots in two experimental situations: (i) seating and (ii) jumping vertically. the results suggest the physical activity in a virtual environment emulated by nintendo wii is able to change the acute cardiovascular responses, mainly when performed in association with vertical jumps. thus, the results support the feasibility use of the nintendo wii in training programs and favor its indication more securely.
Influência da suplementa??o aguda e cr?nica de creatina sobre marcadores enzimáticos de dano muscular de ratos sedentários e exercitados com nata??o
Souza, Renato Aparecido de;Miranda, Humberto;Xavier, Murilo;Salles, Belmiro Freitas de;Sim?o, Roberto;Osório, Rodrigo Aléxis Lazo;Ribeiro, Wellington;
Revista Brasileira de Educa??o Física e Esporte , 2010, DOI: 10.1590/S1807-55092010000300005
Abstract: the aim of this study was to investigate the effects of the short-term (5 g.kg-1 to 1 week) and long-term (1 g.kg-1 to 4-8 weeks) creatine supplementation (cr) on the creatine kinase (ck), lactate dehydrogenaze (ldh) and aspartate aminotransferase (ast) plasmatic concentrations of sedentary and exercised (swimming to 80% of the tolerated maximum load) rats. seventy two wistar males rats (250 ± 10 g) were equally divided in four groups: sedentary rats without supplementation (con; n = 18); exercised rats without supplementation (nat; n = 18); sedentary rats with supplementation (cre; n = 18); exercised rats with supplementation (cre+nat; n = 18). at the end of the first, fourth and eighth weeks six animals of each group were sacrificed. the results demonstrated: 1) improvement of ck, ldh and ast in nat-1 and cre+nat-1 groups vs. con-1 and cre-1 groups after the first experimental week; 2) higher values of ck and ldh only nat-4 group after four experimental weeks; and 3) only ast from cre-8 group differed from other groups at the end of the eighth experimental week. these findings suggest that the cr supplementation: 1) does not affect the muscle damage on swimming exercised rats after one week of high intensity training; 2) could be able to reduce the muscle damage after 4 weeks of training; and 3) after eight weeks of cr supplementation, the muscle damage seems to be attenuated by the exercise, nullifying the effects of cr.
Effect of different doses of creatine on the bone in thirty days of supplementation in mice: FT-Raman study
Humberto Miranda,Renato Aparecido De Souza,Maira Gaspar Tosato,Roberto Sim o,Murilo Xavier Oliveira,Flávia Mafra De Lima,Erika Ferrari,Wellington Ribeiro,Leonardo Marmo Moreira,Airton Abrah o Martin
Spectroscopy: An International Journal , 2011, DOI: 10.3233/spe-2011-0508
Abstract: In this study, Raman spectroscopy was employed in order to provide information about the effects of different doses of creatine on bone tissue composition of phosphate apatite (960 cm–1), carbonate apatite (1170 cm–1) representing the mineral content and collagen matrix (amide I, 1665 cm–1). The animals (27 Balb-C male) were divided into three groups (n═ per group): control (CON), supplemented with 0.5 g/kg (Cre-0.5) and with 2.0 g/kg (Cre-2.0) creatine. The experiment was carried out for thirty days. After this time, the right femur of each animal was harvested. The specimens were assessment by FT-Raman spectroscopy and in a total of 81 spectra were acquired in the medial diaphysis of the femur. The Raman data strongly suggest that only the creatine supplementation of 0.5 g/kg effective to the bone constitution. Furthermore, the present results demonstrate that creatine ingestion provokes decrease in the relative presence of carbonate in the chemical constitution of bones. The decrease in the carbonate content can be associated to a significantly bone resistance altered to several mammalians. The analysis evidenced that the mineral concentrations in the Raman spectroscopy could be a feasible method for non-invasive or minimally invasive assessment of bone tissue composition. Probably this high sensitivity can be employed to determine spectral profiles, such as wavelength of maximum absorption and maximum intensity of absorption of each wavelength, of several bone diseases.
Determination of sucrose concentration in lemon-type soft drinks by dispersive Raman spectroscopy
Landulfo Silveira Jr.,Leonardo Marmo Moreira,Viviane G. B. Concei o,Heliodora L. Casalechi,Ingrid S. Mu oz,Fabiano Fernandes Da Silva,Marcos Augusto S. R. Silva,Renato Aparecido De Souza,Marcos Tadeu T. Pacheco
Spectroscopy: An International Journal , 2009, DOI: 10.3233/spe-2009-0383
Abstract: The objective of this study was to quantify the sucrose amount in commercial lemon-type soft drinks through dispersive Raman spectroscopy, comparing the amount listed in the nutritional table of each product to the predicted by a least-square model, in order to obtain a method for quality assurance applied to soft drinks. A dispersive Raman spectrometer was employed using 830 nm laser and imaging spectrograph coupled to a CCD camera, and a total of 48 samples from four brands of lemon-type soft drinks were analyzed. A calibration curve using sucrose from refined sugar (sugarcane) diluted in spring water was elaborated in the range between 0 and 15.0 g/100 ml, and a quantification model based on Partial Least Squares (PLS) regression was developed to correlate the Raman spectra and the amount of sucrose in each dilution. Then, the sucrose in each soft drink sample was predicted employing the calibration curve. The mean error of calibration for the PLS method was 0.30 g/100 ml (3.0%). Results indicated that soft drinks samples have predicted sugar content ranging from 8.1 to 10.9 g/100 ml, with an error of the predicted value compared to the nutritional table ranged from 1.1% to 5.5%. Therefore, Raman spectroscopy in association with PLS regression was an effective method for quantifying the sucrose, with small prediction error. Thus, the present work allows to infer auspicious possibilities of Raman spectroscopy application in the quantification of relevant nutritional facts in beverages.
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