Universidade Estadual de Londrina

About: Universidade Estadual de Londrina is a education organization based out in Londrina, Brazil. It is known for research contribution in the topics: Population & Context (language use). The organization has 13052 authors who have published 19291 publications receiving 212123 citations.

Postactivation potentiation on repeated-sprint ability in elite handball players.

Abstract: The aim of this study was to analyze the changes on repeated-sprint ability (RSA) performance after heavy load exercise in elite handball players. Twelve subjects were submitted to the following experimental sessions: (a) 1-repetition maximum (1RM) test on the half squat exercise, (b) RSA test (control condition), and (c) RSA with a conditioning activity on the same exercise as 1RM test (experimental condition). The conditioning activity comprised 1 set of 5 × 50% 1RM, 1 set of 3 × 70% 1RM, and 5 sets of 1 × 90% 1RM. A significant improvement in the best sprint time (RSAbest) and mean sprint time (RSAmean) was observed with the conditioning activity (RSAbest = 5.74 ± 0.16 seconds; RSAmean = 5.99 ± 0.19 seconds) when compared with the situation without the conditioning activity (RSAbest = 5.82 ± 0.15 seconds; RSAmean = 6.06 ± 0.18 seconds; p < 0.01) with a moderate (Cohen's d = -0.54) and small effect (Cohen's d = -0.41) to RSAbest and RSAmean, respectively. Therefore, the findings of this study demonstrated that prior heavy load exercise can be used to improve the RSA performance, however, with a small to moderate magnitude of change.

Apoio social na experiência do familiar cuidador

Abstract: This is a qualitative and descriptive study aiming to know the experience of taking care of sick people in the context of homes, analyzing the implications of the social support in the physical and emotional health of the family caregiver. The data had been collected by means of the semi-structured interview with 18 family caregivers of people with chronic illnesses. The technique of the Collective subject discourse was used for the organization of the data. One evidenced that all the informers were of the feminine sex, with average age of 50 years and medium instructional level. They took care uninterruptedly of sick people predominating the mothers with sequel of stroke. They reported health complications related to the care carried through: back pain, hypertension, migraine and depression. The collective speeches are suggestive of the break of the social networks and of the scarcity of support, leading the person to reject the caregiver condition. The overload was characterized by the caregiver to face innumerable situations which he did not succeed to manage it.

Influence on the quality of essential lemon (Citrus aurantifolia) oil by distillation process

Abstract: The essential oil of key lime (Citrus aurantifolia) was obtained by steam distillation at normal conditions (1.0 bar/25oC) with steam at 110oC, during 10h. The GC analysis identified about 10 main substances, being limonene, p-cymene, myrcene and b-bisabolene the most significant compounds. Aldehyde content increased significantly during distillation time (upper phase). After 10h of process, oil has presented more than 3% of aldehydes content due to oxidative reactions.

Reference values for the 6-Min Walking Test in obese subjects

Abstract: Purpose: The 6-Min Walking Test (6MWT) is widely used to measure the performance in various chronic conditions, such as in obese subjects Reference equations for predicting distance walked during 6MWT specifically in adult obese subjects are not available The aim of the paper is to establish reference values for 6MWT in an adult obese population Methods: 323 obese patients (body mass index: BMI > 30 kg/m2, age range 20–60 years) admitted to our hospital for multidisciplinary rehabilitation and weight reduction programs were evaluated using 6MWT, heart rate, blood pressure, oxygen saturation, anthropometric measurements and level of dyspnoea were considered as outcome measure Results: Distance walked during the 6MWT was significantly correlated to age, gender and BMI The proposed reference equation is: 6MWTm = 8942177 − (20700 × ageyrs) − (514489 × gendermales = 0; females = 1) − 51663 × BMIKg/m2 In the multiple linear regression analysis age, gender and BMI explained 48% of the total variance in

Characterization of Soybean Genetically Modified for Drought Tolerance in Field Conditions.

Abstract: Drought is one of the most stressful environmental factor causing yield and economic losses in many soybean-producing regions. In the last decades, transcription factors (TFs) are being used to develop genetically modified plants more tolerant to abiotic stresses. Dehydration responsive element binding (DREB) and ABA-responsive element-binding (AREB) TFs were introduced in soybean showing improved drought tolerance, under controlled conditions. However, these results may not be representative of the way in which plants behave over the entire season in the real field situation. Thus, the objectives of this study were to analyze agronomical traits and physiological parameters of AtDREB1A (1Ab58), AtDREB2CA (1Bb2193) and AtAREB1 (1Ea2939) GM lines under irrigated (IRR) and non-irrigated (NIRR) conditions in a field experiment, over two crop seasons and quantify transgene and drought-responsive genes expression. Results from season 2013/2014 revealed that line 1Ea2939 showed higher intrinsic water use and leaf area index. Lines 1Ab58 and 1Bb2193 showed a similar behavior to wild-type plants in relation to chlorophyll content. Oil and protein contents were not affected in transgenic lines in NIRR conditions. Lodging, due to plentiful rain, impaired yield from the 1Ea2939 line in IRR conditions. qPCR results confirmed the expression of the inserted TFs and drought-responsive endogenous genes. No differences were identified in the field experiment performed in crop season 2014/2015, probably due to the optimum rainfall volume during the cycle. These field screenings showed promising results for drought tolerance. However, additional studies are needed in further crop seasons and other sites to better characterize how these plants may outperform the WT under field water deficit.