RESUMO
O número de indivíduos adeptos a prática de atividade física é baixo, em torno de 70% dos brasileiros praticam menos que 150 minutos de atividades físicas por semana, classificados assim como sedentários. O treino com vibração (plataforma vibratória) está cada vez mais incluído no mercado por possuir inúmeros benefícios tais como: aumento do equilíbrio, ganho de força, aumento da densidade mineral óssea e de flexibilidade, além de sua rápida execução. O objetivo deste trabalho foi avaliar o índice de massa muscular e flexibilidade dos membros inferiores de mulheres sedentárias com idades entre 18 e 30 anos. Para tanto foram realizadas 2 sessões semanais de plataforma vibratória no período de 2 meses, as avaliações foram realizadas através de bioimpedância elétrica, medida de circunferência e teste de flexibilidade. Os resultados não demostraram melhoras estatísticas significativas, todas as avaliações foram feitas em tempo 0, 30 e 60 dias. Conclui-se que os resultados obtidos não demonstraram ganho de massa muscular aumento de flexibilidade, no entanto as atividades físicas de forma geral requerem um tempo de adaptação do organismo, que ira variar de acordo com cada indivíduo, além disso há necessidade de mais estudos do treinamento de vibração com uma padronização de protocolos...(AU)
The number of individuals tans to the practice of physical activity is below, around 70 per cent of the brazilians practice less than 150 minutes of physical activities per week, classified thus as sedentaries. The training of vibration (vibrating platform) is each time else included in the market cause has a lot of benefits such as: increasing of equilibrium, gain of strength, increasing ofmineral bone's density and flexibility, over its fast execution. The aim of this work was to evaluate the index of muscle mass and flexibility of the below limbs of sedentaries women with age between 18 and 30 years old. To this were made 2 sessions per week in the vibrating platform in the period of 2 months in total 18 sessions, the evaluations were made throught eletric bioimpedance, measured by a circumference in the right side and test of flexibility. The results didnt show meaning statistics improvements, all the evaluations were made in time 0,30 and 60 days, in perimetry in a general way didn't present statistic difference (p>0,05), just in knee (p<0,01). In the thin mass at beginning we could to see a reduction, but the same was recovered along training. To the flexibility we haven't seen statistic difference (p_ 0,6472). We conclude that the results retrieved didn't show gain of muscle mass, increasing of flexibility in the achievement of the exercises on the vibrating platform, so the physical activities in a general way require an adaptation of the body that is going to vary according to each individual, furthermore there is needing of more studies about the vibrating training with a standardization of protocols to have more trusted results...(AU)
Assuntos
Humanos , Feminino , Adolescente , Adulto , Educação Física e Treinamento , Vibração , Exercício Físico , MaleabilidadeRESUMO
Despite the development of efficient boar semen extenders, there is still room for improvement of new formulas using new molecules that could increase fertilisation outcomes and substitute cryoprotectants and antibiotics. The goal of this work was to evaluate if the essential oils from the leaves of Myrrhinium atropurpureum and Cymbopogon citratus are suitable as additives in boar semen extender. The major compounds found in the essential oils from M. atropurpureum were 1,8-cineole (37.37%) and terpinolene (19.18%); and geranial (49.8%) and neral (33.24%) in essential oil of C. citratus. The addition of 1% and 0.1% of both essential oils to extended semen had immediate spermicidal effects (p < 0.05). Lower concentrations were tested and no cytotoxic effect was observed when M. atropurpureum essential oil was added at 0.001%. Differently, essential oil from C. citratus reduced sperm motility, membrane functionality and integrity and mitochondrial membrane potential even in concentrations as low as 0.001%. Also, addition of essential oils in low concentrations had no inhibitory effect against Escherichia coli and Pseudomonas aeruginosa growth. We conclude that the essential oils from C. citratus and M. atropurpureum, rich in monoterpenes, are cytotoxic to swine spermatozoa, therefore unsuitable as semen extender additives.
Assuntos
Cymbopogon/química , Myrtaceae/química , Óleos Voláteis/toxicidade , Preservação do Sêmen/veterinária , Espermatozoides/efeitos dos fármacos , Animais , Masculino , Monoterpenos/análise , Óleos Voláteis/química , Óleos Voláteis/isolamento & purificação , SuínosRESUMO
BACKGROUND: Hibiscus tiliaceus L. (Malvaceae) is used in postpartum disorders. Our purpose was to examine the antidepressant, anxiolytic and sedative actions of the methanol extract of H. tiliaceus flowers using animal models. METHODS: Adult male Swiss albino mice were treated with saline, standard drugs or methanol extract of H. tiliaceus and then subjected to behavioral tests. The forced swimming and tail suspension tests were used as predictive animal models of antidepressant activity, where the time of immobility was considered. The animals were submitted to the elevated plus-maze and ketamine-induced sleeping time to assess anxiolytic and sedative activities, respectively. RESULTS: Methanol extract of H. tiliaceus significantly decreased the duration of immobility in both animal models of antidepressant activity, forced swimming and tail suspension tests. This extract did not potentiate the effect of ketamine-induced hypnosis, as determined by the time to onset and duration of sleeping time. CONCLUSION: Our results indicate an antidepressant-like profile of action for the extract of Hibiscus tiliaceus without sedative side effect.
Assuntos
Antidepressivos/uso terapêutico , Depressão/tratamento farmacológico , Hibiscus , Fitoterapia , Extratos Vegetais/uso terapêutico , Sono/efeitos dos fármacos , Animais , Ansiolíticos/farmacologia , Ansiolíticos/uso terapêutico , Antidepressivos/farmacologia , Comportamento Animal/efeitos dos fármacos , Modelos Animais de Doenças , Elevação dos Membros Posteriores , Ketamina/farmacologia , Masculino , Aprendizagem em Labirinto , Camundongos , Camundongos Endogâmicos , Extratos Vegetais/farmacologia , NataçãoRESUMO
The leather industry is a major producer of wastewaters and releases large quantities of many different chemical agents used in hide processing into the environment. Since the central nervous system is sensitive to many different contaminants, our aim was to investigate the neurobehavioral effects of exposure of mice to tannery effluents using animal models of depression and anxiety, namely forced swim and elevated plus-maze. In order to propose a clean technology for the treatment of this effluent, we also investigated the exposure of mice to effluents treated by photoelectrooxidation process (PEO). Adult male Swiss albino mice (CF1 strain) were given free access to water bottles containing an effluent treated by a tannery (non-PEO) or PEO-treated tannery wastewater (0.1 and 1% in drinking water). Exposure to tannery wastewater induced behavioural changes in the mice in elevated plus-maze. Exposure to non-PEO 1% decreased the percentage of time spent in the open arms, indicating anxiety-like behaviour. Exposure to tannery wastewater did not alter immobility time in the forced swim test, suggesting that tannery effluents did not induce depression-like behaviour in the mice. These behavioural data suggest that non-PEO tannery effluent has an anxiogenic effect, whereas PEO-treated tannery effluents do not alter anxiety levels.