958 resultados para physical capacity


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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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

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Pós-graduação em Fisiopatologia em Clínica Médica - FMB

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Introduction:The regular practice of physical activity is being used as a therapeutic resource to the elderly population, with the objective of reduction of the losses provoked by the growing old process. The home place (urban or rural) is still little explored in literature about your infl uence in the physical capacity of the elderly people. Objective: The aim of this study was to value and compare the quality of life, motion and functional capacity between physically active and sedentary elderly people, residents in the urban and rural area. Methods: Sixty people with age above 60 years old were valued, 20 physically active residents in the urban area (66,5 ± 4,32 years), 20 sedentary residents in the urban area (68,8± 7,24 years), 10 physically active residents in the rural area (64,4±2,46 years) and 10 sedentary residents in the rural area (68±5,78 years). It was realized the evaluation of the fl exibility (previous fl exon of the trunk), mobility (timed up and go test), a six-minute walk test and answered a quality of life’s questionnaire SF-36. To compare the results obtained by the two groups was used the Kruskal-Wallis test, and the signifi cant presence of the test was performed post hoc Newman-Keuls. The level of signifi cance used in statistical analysis was 5% (p<0,05).Results: It was observed that the physically active elderly people obtaine better performance on the six-minutes walk test. It wasn’t found difference in the mobility among the groups. In relation to the quality of life, the elderly residents in the rural area, were better in the component Vitally. In relation to the fl exibility the elderly residents in the urban area obtained the best results. So, we can conclude that the practice of physical activity realized by the volunteers contributed to a better functional capacity, observed by the biggest distance gone through on the walk test. The rural home place positively infl uenced the vitality control, while the fl exibility was worse presented in these elderly people.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Pós-graduação em Fisiopatologia em Clínica Médica - FMB

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Dexamethasone (DEXA) is a synthetic glucocorticoid widely used in the handling of several drugs, for its proven benefits in fighting inflammation and allergies. Despite their benefits, their chronic use leads to several side effects that include changes in the body in the metabolism of carbohydrates, lipids and proteins. Moreover, being an anti-inflammatory, acts on the arachidonic acid pathway, reducing the expression of the enzyme cyclooxygenase (COX-2) and growth factor derived from the endothelium of blood vessels (VEGF) in various tissues. However, its effects on the myocardium are still uncertain. The physical training (PT), in turn, promotes effects contrary to those caused by chronic use of DEXA, however, little is known about the preventive effects of TF in the side effects of Dexa in the myocardium. Therefore, the aim of this study was to determine if the TF has the ability to prevent and/or mitigate the effects of Dexa in protein expression of COX-2 and VEGF in the myocardium. Forty animals were divided into 4 groups: sedentary control (SC), sedentary treated with Dexa (SD), trained control (TC) and Trained treated with Dexa (TD) and submitted to a protocol of physical training on the treadmill for 70 days (1 h/day-5 days per week, 60% of physical capacity) or kept sedentary. Over the past 10 days, rats were treated with Dexa (Decadron, 0.5 mg/kg per day, ip) or saline. During training the animals were weighed weekly and during treatment daily. At the end of treatment was made to measure fasting glucose levels of animals. The rats were killed with excess anesthesia and cardiac muscle was removed, weighed, homogenized, centrifuged and stored at -20° C for analysis of protein expression of VEGF and COX-2 by Western blotting technique. Treatment with dexamethasone caused a weight loss of 18% in sedentary animals and 13% in trained as well as elevated levels of fasting glucose in sedentary (88%). The TF was unable to mitigate the loss in...

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Muscle atrophy is always associated with Dexamethasone (Dexa) treatment, however the mechanisms are not completely understood. This study investigated the effects of Dexa on myostatin and p70S6K protein expression and if previous exercise training (T) can attenuate these effects. Eighty rats were distributed into 4 groups: sedentary control (SC), sedentary treated with Dexa (SD; 0,5 mg/kg per day, i.p., 10 days), trained control (TC) and trained treated with Dexa (TD) and underwent a training period where they were either submitted to a running protocol (60% of physical capacity, 5 days/week for 8 weeks) or kept sedentary. After T period, animals underwent Dexa treatment concomitant with training. Western Blot was performed to identify myostatin and p70S6k protein expression in the tibialis anterior (TA) and soleus (SOL) muscle. Ten days of Dexa treatment increased fasting glucose (SD=+62%), however previous T attenuated this increase (TD=+20%, p<0.05). Dexa determined significant decrease in body weight in TD (-22%) and SD (-25%), followed by TA weight reduction in SD (-23%) and TD (-20%). Previous training could not avoid these decreases. Myostatin protein expression was not altered by dexa treatment or training in TA muscle but in SOL muscle it was significantly modified after T, regardless of treatment (TC=+%23 and TD=+25) compared with their respective controls. The protein p70S6K was not modified neither by dexa nor training in any of the analyzed muscle or condition. The results of this study allowed us to conclude that previous training attenuates the hyperglycemia induced by Dexa, however it did not prevent the body or muscle weight reductions. Even in the presence of muscle atrophy, the expression of myostatin and p70S6K do not justify the mechanisms of muscle loss induced by Dexa, which suggests that other catabolic or anabolic proteins could be involved in the process of muscle atrophy after 10 days of treatment with Dexa

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)