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Previous issue date: 2016-06-17 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / H? evid?ncias de que o exerc?cio f?sico pode diminuir a perda cognitiva e prevenir a dem?ncia em idosos, assim tamb?m como o treino cognitivo ? outra interven??o que vem sendo investigada, representando o aprendizado de novas formas de resolu??o de problemas, no entanto os estudos que investiguem o exerc?cio f?sico aliado ? estimula??o cognitiva, ainda s?o inconclusivos. Objetivo: Analisar o efeito de uma sess?o de exerc?cio f?sico aer?bio com estimula??o cognitiva no desempenho da mem?ria e no aumento do fator neurotr?fico derivado do c?rebro (BDNF) em idosos. Material e M?todos: O presente estudo se caracteriza como quase experimental, com delineamento crossover randomizado. Tivemos como amostra 30 idosos de ambos os sexos (69,3 ? 5,8 anos de idade; 29,7 ? 3,9 kg.cm-?), que foram submetidos a tr?s diferentes sess?es, sendo duas de exerc?cio f?sico (sess?o com exerc?cios autom?tica e sess?o com est?mulos cognitivos) e uma sess?o controle, cada sess?o teve dura??o de 50 minutos. A mem?ria foi avaliada com o teste de lista de palavras, realizou-se tamb?m uma coleta sangu?nea antes e ap?s cada sess?o a fim de avaliar a varia??o da quantidade s?rica do BDNF. Ap?s a coleta foi verificado a normalidade e homogeneidade das vari?ncias. Utilizou-se ANOVA two-way de medidas repetidas para compara??o entre e intrasess?es das concentra??es de BDNF e mem?ria. Adotou-se como n?vel de signific?ncia estat?stica o p < 5%. Resultados: Na mem?ria, as sess?es n?o foram diferentes entre si, no entanto, houve um efeito significativo no tempo, apontando que houve diminui??o significante no desempenho de mem?ria em todas as sess?es. Nos n?veis de concentra??o do BDNF, as sess?es n?o foram diferentes entre si, do mesmo modo, n?o houve signific?ncia na intera??o tempo ? sess?o. Conclus?o: Uma ?nica sess?o de exerc?cio aer?bio conjugada a estimula??o cognitiva com intensidade moderada n?o ? suficiente para aumentar o fator neurotr?fico derivado do c?rebro, podendo prejudicar o desempenho da mem?ria em tarefas realizadas logo ap?s o exerc?cio. / Human aging is characterized by different physiological and functional changes that may be influenced by lifestyle, genetic and environmental factors. Among the consequences of these changes are cognitive deficits, principally memory, affecting the activities of daily life of elderly. Cognitive training intervention combined with exercise has been widely indicated as an alternative to promote cognitive health, however, studies investigating exercise combined with cognitive stimulation are still rare and inconclusive. Objective: To determine the effects of the combination of single session aerobic exercise with cognitive stimulation over memory performance and increased Brain-Derived Neurotrophic Factor (BDNF) in the elderly. Methods: This study was characterized as almost experimental, with randomized and crossover design, fulfill with 30 elderly men and women (69.3 ? 5.8 years; 29.7 ? 3.9 kg.cm-?) who were subjected to three different sessions, including two sessions of physical exercise (one with automatic exercise and other with cognitive stimulation) and a control session, each session lasted 50 minutes. The memory was evaluated using the word list test, also serum BDNF was measured from blood sampling immediately before and immediately after each session. After the collection, was found normality and homogeneity of variances. We used two-way ANOVA to compare repeated measures both the concentration of BDNF and as the memory test between sessions and the session itself. We adopted as statistically significant level p <5%. Results: In relation to memory, the sessions were not different from each other (F (2, 89) = 0.36, P = 0.697, ?p = 0.008,), however, there was a significant effect in relation to time, indicating that there was a reduction of memory performance in post exercise in all sessions for both the short term memory (control ? p = 0.002, automatic ? p < 0.001 and exercise with stimulation ? p = 0.023) and for work memory (automatic ? p = 0.012 and exercise with stimulation ? p = 0.015). In relation to the levels of concentration of BDNF, the sessions were not different each other (F (2, 90) = 0.06, P = 0.941, ?p = 0.001), in the same way, there was no significance in interaction time ? session (F (2, 90) = 1.37, P = 0.260, ?p = 0.029) and in time (F (1, 90) = 0.14, P = 0.712, = 0.002 ?p). Conclusion: Moderate intensity aerobic exercise simultaneously with cognitive stimulation is not enough to increase the brain-derived neurotrophic factor, which may negatively affect the performance of memory in tasks performed soon after exercise
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/21520 |
| Date | 17 June 2016 |
| Creators | Cavalcante Neto, Francisco Holanda |
| Contributors | 18537634115, Fayh, Ana Paula Trussardi, 95978887004, Chao, Cheng Hsin Nery, 58413774187, Bobinski, Franciane, 05994759945, Moreira, S?rgio Rodrigues, 83971475949, Barros, Jonatas de Fran?a |
| Publisher | PROGRAMA DE P?S-GRADUA??O EM EDUCA??O F?SICA, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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