Effect Of Concurrent Training With Blood Flow Restriction In The Elderly

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)The aim of this present study was to investigate on the effects of concurrent training with blood flow restriction (BFR-CT) and concurrent training (CT) on the aerobic fitness, muscle mass and muscle strength in a cohort of older individuals. 25 healthy older adults (64.7 +/- 4.1years; 69.33 +/- 10.8 kg; 1.6 +/- 0.1m) were randomly assigned to experimental groups: CT (n=8, endurance training (ET), 2 days/week for 30-40min, 50-80% VO2peak and RT, 2 days/week, leg press with 4 sets of 10 reps at 70-80% of 1-RM with 60s rest), BFR-CT (n=10, ET, similar to CT, but resistance training with blood flow restriction: 2 days/week, leg press with 1 set of 30 and 3 sets of 15 reps at 20-30% 1-RM with 60s rest) or control group (n=7). Quadriceps cross-sectional area (CSAq), 1-RM and VO2peak were assessed pre- and post-examination (12 wk). The CT and BFR-CT showed similar increases in CSAq post-test (7.3%, P<0.001; 7.6%, P<0.0001, respectively), 1-RM (38.1%, P<0.001; 35.4%, P=0.001, respectively) and VO2peak (9.5%, P=0.04; 10.3%, P=0.02, respectively). The BFR-CT promotes similar neuromuscular and cardiorespiratory adaptations as CT.365395399Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq

Estiolamento, incisão na base da estaca e uso do ácido indolbutírico na propagação da caramboleira por estacas lenhosas.

Objetivou-se, neste trabalho, avaliar o efeito do estiolamento, da incisão na base da estaca e do tratamento com ácidoindolbutírico (AIB) no enraizamento de estacas lenhosas de caramboleira. As estacas foram padronizadas com um par de folhasinteiras e 12 cm de comprimento

Condutitvidade hisráulica do solo coeso dos tabuleiros costeiros cultivado com citros.

Avalia através da determinação da condutividade hidráulica não saturada, o movimento de água em agrissolo acinzentado coeso dos tabuleiros costeiros cultivado com citros.bitstream/CPATC/19569/1/bp-22.pdfISSN 1678-1961

Efeito do fosfato-de-araxá e superfosfato simples em algumas propriedades físico-químicas e do fósforo residual disponível em um solo Oxic Paleudalf

The experiment was developed using surface soil samples (TRE, Oxic Paleudalf) from the Experimental Field Station of ESALQ, located in Piracicaba, SP, Brazil. This soil had received during the period al three years 6 ton/ha of Araxá rockphosphate (34,6% P2O5) or 1,2 ton/ha of simple superphosphate (20% P2O5) while three crops of beans (Phaseolus vulgaris, L.) were grown. This greenhouse experiment had the objective of evaluating the effect al these fertilizer applications on some physico-chemical properties of the soil, and also study the residual P effect through the Olsen and "A" value methods. Results indicate that Araxá rockphosphate (48.4% CaO), although applied at high rate, did not affect soil reaction. On the other hand, both fertilizers increased the exchangeable Ca2+ level approximately 0,5 mE/100 g. In short term (less than three years), the response of Araxá rockphosphate corresponded to its 2% citric acid soluble P2O5, content (4%) rather than to its total P2O5 content. Through "A" values (using KH232PO4) it was shown that the residual effect of simple superphosphate (108.6 kg P2O5/ha) was similar to the Araxá rockphosphate (136.6kg P2O5/ha), but these were significantly greater than the natural P content of the soil (54.0 kg P2O5/ha). The evaluation of available P in the soil (with and without fertilizer) by Olsen's method, had an efficiency of 64 and 94% (respectively) as compared to the "A" value method.Utilizando-se amostras superficiais de solo (TRE, Oxic Paleudalf) da área da Estação Agrometeorológica da ESALQ/USP (Piracicaba, SP), que havia recebido durante um período de três anos adubações de 6 t/ha de fosfato-de-araxá (34,6% de P2O5) ou 1,2 t/ha de superfosfato simples (20% P2O5), em três culturas de feijão (Phaseolus vulgaris L.), cultivar Carioca, realizou-se o presente trabalho em casa-de-vegetação, empregando-se a mesma cultura. O objetivo foi o de avaliar o efeito destes adubos em algumas características físico-químicas do solo e o efeito residual de P, pelos métodos do valor "A" e o de Olsen. Os resultados obtidos indicaram que o fosfato-de-Araxá (48,4% CaO), embora aplicado em alta dose, não afetou significativamente a reação do solo. Por outro lado, tanto o fosfato-de-Araxá, como superfosfato simples, incrementaram o Ca+2 trocável em - 0,5 mE/100 g. A curto prazo (menos de três anos), a resposta de fosfato-de-araxá como adubo fosfatado correspondeu ao seu teor de P105 solúvel em ácido citrico a 2% (4% P2O5) e não a seu teor total. Pelo valor "A" (usando-se KH232PO2), o efeito residual do superfosfato simples (108,6kg P2O5/ha) foi similar ao do fosfato-de-araxá (136,6 kg P2O5/ha), significativamente maior que o teor natural da P do solo (54,0 kg P2O5/ha). A avaliação do P disponível do solo, com ou sem adubo, pelo método de Olsen, teve uma eficiência de 64 e 94% em relação ao valor "A", respectivamente

INFLUENCE OF THE MODEL SIZE IN THE NUMERICAL DETERMINATION OF THE AVERAGE THERMAL STRESSES IN AN MMC COMPOSITE

In previous works the authors discussed some issues related to a specific metallic matrix composites (MMC), the Aluminum matrix reinforced with SiC particles (Al+SiC) which has a metal matrix (powder) mixed with ceramic particles. These materials have some advantages when used as a structural material such as their high strength and good conformability. Their properties depend, among others, on the volumetric ratio, the  particles size and distribution besides the matrix microstructure itself. Some of them are obtained at elevated temperature what produces a thermal stress state in the material. The Al+SiC is one of the later. The powder mix is extruded at 600oC and it is used at 20oC. Several numerical analyses were performed considering the random distribution of the particles and a non-linear behavior in the aluminum matrix. The results showed strong influence of the aluminum elastic-plastic behavior in the composite thermal stress distribution due to its manufacturing process. However, one issue remained: the size of the model. It represents the central portion of a Al+SiC bar which is only about 10 times the size of a single particle (~10L). The present work investigates, always numerically, the influence of the model size on the thermal stress distribution. It considers 2 sets of non-linear analyses with random distributed particles: one with 20 models with size of 20L each one, the other set with another 20 models with size 40L. This approach allows a view of the results tendency compared with the 10L ones. As done before, the modeled volumetric ratio has a very tight range of values with its average very near to the value in an actual Al+SiC composite. It is showed that the first model size was already enough to get good results without sacrificing neither the computer nor the analyst time

Effect Of Concurrent Training With Blood Flow Restriction In The Elderly.

The aim of this present study was to investigate on the effects of concurrent training with blood flow restriction (BFR-CT) and concurrent training (CT) on the aerobic fitness, muscle mass and muscle strength in a cohort of older individuals. 25 healthy older adults (64.7±4.1 years; 69.33±10.8 kg; 1.6±0.1 m) were randomly assigned to experimental groups: CT (n=8, endurance training (ET), 2 days/week for 30-40 min, 50-80% VO2peak and RT, 2 days/week, leg press with 4 sets of 10 reps at 70-80% of 1-RM with 60 s rest), BFR-CT (n=10, ET, similar to CT, but resistance training with blood flow restriction: 2 days/week, leg press with 1 set of 30 and 3 sets of 15 reps at 20-30% 1-RM with 60 s rest) or control group (n=7). Quadriceps cross-sectional area (CSAq), 1-RM and VO2peak were assessed pre- and post-examination (12 wk). The CT and BFR-CT showed similar increases in CSAq post-test (7.3%, P<0.001; 7.6%, P<0.0001, respectively), 1-RM (38.1%, P<0.001; 35.4%, P=0.001, respectively) and VO2peak (9.5%, P=0.04; 10.3%, P=0.02, respectively). The BFR-CT promotes similar neuromuscular and cardiorespiratory adaptations as CT