973 resultados para Intensidade


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Esta revisão avaliou a eficácia da utilização da vacina E. coli J5, na imunização de vacas e novilhas leiteiras no pós-parto, em relação à prevenção de novos casos de mastite clínica, redução na gravidade dos sinais clínicos dos animais acometidos pela enfermidade, assim como na contagem de células somáticas presentes no leite dos animais doentes. O experimento contou com a avaliação dos dados encontrados em seis trabalhos científicos, divididos em dois grupos, três com estudos em vacas e três com estudos em novilhas. A prevenção de casos de mastite clínica foi observada somente em vacas; no grupo das novilhas não houve diferença entre vacinados e não vacinados. Em relação à gravidade dos sinais clínicos dos animais acometidos com mastite, tanto no grupo das novilhas quanto no das vacas, a vacina mostrou-se eficaz, reduzindo custos com tratamentos, descarte de leite e de animais. Sobre a eficácia da vacina em reduzir contagem de células somáticas presentes no leite dos animais com mastite, a vacina não se mostrou eficaz em vacas e novilhas. Análise econômica indica que a vacina E. coli J5 é lucrativa para produtores de leite de grande, médio e pequeno porte, sendo recomendada tanto para vacas quanto para novilhas, por reduzir os custos de produção e facilitar o manejo das granjas leiteiras

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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BACKGROUND AND OBJECTIVES: Vaginal birth delivery may result in acute and persistent perineal pain postpartum. This study evaluated the association between catastrophizing, a phenomenon of poor psychological adjustment to pain leading the individual to magnify the painful experience making it more intense, and the incidence and severity of perineal pain and its relationship to perineal trauma. METHOD: Cohort study conducted with pregnant women in labor. We used the pain catastrophizing scale during hospitalization and assessed the degree of perineal lesion and pain severity in the first 24 hours and after 8 weeks of delivery using a numerical pain scale. RESULTS: We evaluated 55 women, with acute pain reported by 69.1%, moderate/severe pain by 36.3%, and persistent pain by 14.5%. Catastrophizing mean score was 2.15 ± 1.24. Catastrophizing patients showed a 2.90 relative risk (RR) for perineal pain (95% CI: 1.08-7.75) and RR: 1.31 for developing persistent perineal pain (95% CI: 1.05-1.64). They also showed a RR: 2.2 for developing acute and severe perineal pain (95% CI: 1.11-4.33). CONCLUSIONS: The incidence of acute and persistent perineal pain after vaginal delivery is high. Catastrophizing pregnant women are at increased risk for developing acute and persistent perineal pain, as well as severe pain. Perineal trauma increased the risk of persistent perineal pain.

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The aim of this study was to verify the use of exertion subjective perception to control warm-up intensity performed by continuous running in children. Twenty-one children (11,4 ± 0,8 years, 45 ± 9,8 kg e 153,6 ± 9,6 cm), performed warm-up by continuous running in randomic order in three conditions with diferent intensities using rate of perceived exertion (RPE). The intensities were chosen according to RPE Borg CR-10 and the arbitrary units used were three (B3), Five (B5) and nine (B9). The heart rate (HR) and mean velocity of the run (VEL) were evaluated to analyse the intensity of the three warm-up conditions. Statistical analysis was done by annova one-way followed by post-hoc tukey test, considering significant level of 5%. There were significant increase in HR (B3= 112 ± 10, B5 = 140 ± 18 e B9 = 176 ± 21 bpm) and VEL (B3 = 4,01 ± 0,5, B5 = 7,09 ± 1,22 e B9 = 10,97 ± 1,70 km/h) between B5 and B9 condition compared to B3. Moreover, in both parameters B9 presented significantly higher results compared to the condition B5. It´s possible to control warm-up intensity performed by continuous running in children using RPE Borg CR-10.

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Low adherence to physical exercise programs is a factor that contributes to the high rates of physical inactivity worldwide. In this sense, strategies to improve the affective responses during exercise are used to impact adherence, as the use of music and self-selected exercise intensity. Despite the benefits of these strategies, there are few studies involving the combination of both (self-selected intensity and music), especially in the elderly population. Thus, the aim of this study was to investigate the influence of music on performance, ratings of perceived exertion (RPE) and on affective and motivational responses of elderly during walking exercise with self-selected intensity. Eleven elderly performed walking sessions on an athletic track in three conditions: without music, with motivational music and with oudeterous music. RPE, mood states, motivation, affective responses, session RPE and attitudes related to the experience of exercise were evaluated. Results demonstrated that both motivational and oudeterous music improved affective responses and decreased RPE. However, only the motivational music condition showed an effect on distance walked, the only presenting a consistent increase in distance. Therefore, it is concluded that the use of music, particularly motivational music, besides increasing the distance walked, reduces RPE and increase pleasure of the elderly during the exercise. Such strategy, in addition to potentially impact adherence positively, can lead to greater benefits and physical adaptations related to the training in the long term

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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The theory of sexual selection states that individuals more capable of attracting, selecting and competing for partners are more successful on reproduction than the less fit individuals. Competition for sexual partners can be observed in different populations of humpback whales (Megaptera novaeangliae). These large cetaceans migrate seasonally from feeding areas, in high latitudes, to breeding areas, in low latitudes, where they spend the winter. During the breeding season females with and without calves are escorted by transient competitive groups of males. Seeking reproductive success in the same group, various males exhibit aggressive behaviors searching for proximity to the disputed female. Breeding areas are usually located in warm and shallow waters that provide greater security to newborn calves. The Abrolhos Bank, in the Bahia State, is the main breeding area of the species in Brazil. In this study, we used data collected in this region between 2003 and 2012. We tested the hypothesis that there is temporal fluctuation in the abundance of competitive groups and, thus, there is variation in the levels of competition among males during the breeding season. We expected to find higher competition at the beginning of the season since there are a large number of males competing for a small number of females available for mating, because some of them would still be pregnant with calves conceived on the previous year. As the pregnant females give birth to their calves and can again get into heat, the competition among males would be softened, represented by a smaller number of individuals in competitive groups and a larger number of groups sighted. To test this hypothesis we compared the number of individuals per group and number of groups sighted (response variables) between the beginning and the end of the reproductive season (explanatory variable) by using generalized linear models. We used the Living Planet Index (LPI),...