Estilo de vida de acadêmicos de educação física de uma universidade pública do estado de Sergipe

Objetivou-se analisar o estilo de vida de acadêmicos de Educação Física de uma universidade pública do estado de Sergipe, Brasil. A amostra probabilística foi de 217 alunos da Universidade Federal de Sergipe com 20,6 (±3,1) anos de idade, sendo 105 da licenciatura e 112 do bacharelado. Da amostra analisada, 3,3% (IC95%: 0,9-1,6) apresentou um estilo de vida inadequado. A maior parte dos alunos, 57,4% (IC95%: 50,7-64,0), não atendeu as recomendações para atividade física. Estudantes da licenciatura estavam mais inadequados que os do bacharelado no conjunto do estilo de vida global e nas condutas de sono, cinto de segurança, estresse e sexo seguro. Os achados contribuem para que a universidade elabore campanhas e programas de extensão no campus para promoção do estilo de vida saudável

Influence of creatine and caffeine supplementation on neuromuscular fatigue

Orientador: Antonio Carlos de MoraesTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Educação FísicaResumo: Embora sejam amplamente conhecidos os efeitos ergogenicos tanto da creatina quanto da cafeína ainda não temos evidencias científicas suficientes sobre a conciliação destes dois ergogenico sobre o desempenho físico. Diante desta questão o presente estudo investigou a ação da suplementação de creatina e cafeína sobre a ativação neuro muscular, fadiga e torque. Foram selecionados dos 16 indivíduos físicamente ativos, saudáveis com idades entre 18 e 30 anos, o estudo foi executado em duas etapas (experimento 1) os indivíduos foram suplementados com cafeína (6mg/kg) (Caf) durante 3 dias, creatina (3g /dia) (Cre 3) durante 7 dias e associação de cafeína e creatina (CrCaf), (experimento 2) os indivíduos foram suplementados com creatina (20g/dia) (Cr High), durante 7 dias, associação de cafeína e creatina (CrCaf High), e suplementação placebo (Pla). Após os periodos de suplementação foram submetidos ao teste de extensão de joelho no dinamómetro isocinético onde foi monitorada da atividade eletromiográfica (EMG) da musculatura. O protocolo de teste se consistiu em 45 repetições de extensão e flexão de joelho com velocidade constante angulares de 1200/s no dinamómetro isocinético Biodex, Onde foi monitorado o torque na faze de extensão bem como a atividade EMG dos músculos vasto lateral (VL), vasto medial (VM) e reto femoral (RF). Podemos observar nos grupos CrCaf e CrCaf High uma menor ativação de UMs através dos valores de RMS (p<0,05), o que corrobora com os valores obtidos de MDF que apresentaram nestes mesmos grupos valores de 5,67% menos fadiga (p<0,05) e um torque total de 7,47% maior (p<0,05). Diante destes resultados a associação de creatina e cafeína provou ajudar a melhorar o torque total e retardar a manifestação da fadiga o que pode influenciar diretamente no desempenho de exercícios de alta intensidade em uma variedade de esportesAbstract: Although it is widely known the ergogenic effects of creatine as much caffeine we have no sufficient scientific evidence on reconciling the two ergogenic on physical performance. Faced with this question the present study investigated the action of creatine and caffeine supplementation on neuromuscular activation, fatigue and torque. We selected the 16 physically active, healthy subjects aged between 18 and 30 years, the study was performed in two stages (experiment 1) individuals were supplemented with caffeine (6 mg / kg) (Caf) for 3 days, creatine (3g / day) (Cre 3) for 7 days and combination of caffeine and creatine (CrCaf) (experiment 2) the participants were supplemented with creatine (20g / day) (Cr higt) for 7 days, combination of caffeine and creatine (CrCaf higt) and placebo supplementation (Pla). After the supplementation periods underwent knee extension test in isokinetic dynamometer which was monitored electromyographic (EMG) activity of the muscles. The test protocol consisted of 45 repetitions of extension and knee flexion angle at a constant speed of 1200 / s in isokinetic dynamometer Biodex, Where was monitored torque to the extent of making and the EMG activity of the vastus lateralis (VL), vastus (VM) and rectus femoris (RF). We can observe CrCaf groups and CrCaf Higt a lower activation MUs through the RMS values (p <0.05), which agrees with the values of MDF that had these same groups 5.67% for values less fatigue (p <0.05) and total torque increased 7.47% (p <0.05). Given these results creatine and caffeine proved association help improve the total torque and delay the onset of fatigue which can directly influence the performance of high-intensity exercise in a variety of sportsDoutoradoBiodinamica do Movimento e EsporteDoutor em Educação Físic

Desempenho de repetições máximas adotando diferentes ordens de exercícios em uma sessão de treinamento de força para o membro superior

Introduction: The exerciser order directly affects the strength performance. Objective: To investigate the influence of different variations of exercise order on repetition performance during resistance training sessions. Methods: Eighteen trained men performed two randomized experimental protocols: SEQA – bench press (BP), incline bench press (IBP), machine shoulder press (MSP), shoulders abduction (SA), triceps extension on pulley (TEP) and French triceps extension (FTE); SEQB – reverse order. Three repetitions to failure sets were performed with ten repetition maximum loads for all exercises. Results: Significant differ - ences were observed in total work (repetitions x sets) for BP, IBP, MSP, SA, and FTE between SEQA and SEQB, except TEP exercise. There were no significant differences between the sequences (p = 0.07), considering the sum of repetitions for all exercises under SEQA (2225 ± 2.44) and SEQB (2337 ± 2.3). Conclusion: We suggest that priority exercise should be performed in the beginning of the training session, regardless the muscle group size

Brazilian Flora 2020: Leveraging the power of a collaborative scientific network

International audienceThe shortage of reliable primary taxonomic data limits the description of biological taxa and the understanding of biodiversity patterns and processes, complicating biogeographical, ecological, and evolutionary studies. This deficit creates a significant taxonomic impediment to biodiversity research and conservation planning. The taxonomic impediment and the biodiversity crisis are widely recognized, highlighting the urgent need for reliable taxonomic data. Over the past decade, numerous countries worldwide have devoted considerable effort to Target 1 of the Global Strategy for Plant Conservation (GSPC), which called for the preparation of a working list of all known plant species by 2010 and an online world Flora by 2020. Brazil is a megadiverse country, home to more of the world's known plant species than any other country. Despite that, Flora Brasiliensis, concluded in 1906, was the last comprehensive treatment of the Brazilian flora. The lack of accurate estimates of the number of species of algae, fungi, and plants occurring in Brazil contributes to the prevailing taxonomic impediment and delays progress towards the GSPC targets. Over the past 12 years, a legion of taxonomists motivated to meet Target 1 of the GSPC, worked together to gather and integrate knowledge on the algal, plant, and fungal diversity of Brazil. Overall, a team of about 980 taxonomists joined efforts in a highly collaborative project that used cybertaxonomy to prepare an updated Flora of Brazil, showing the power of scientific collaboration to reach ambitious goals. This paper presents an overview of the Brazilian Flora 2020 and provides taxonomic and spatial updates on the algae, fungi, and plants found in one of the world's most biodiverse countries. We further identify collection gaps and summarize future goals that extend beyond 2020. Our results show that Brazil is home to 46,975 native species of algae, fungi, and plants, of which 19,669 are endemic to the country. The data compiled to date suggests that the Atlantic Rainforest might be the most diverse Brazilian domain for all plant groups except gymnosperms, which are most diverse in the Amazon. However, scientific knowledge of Brazilian diversity is still unequally distributed, with the Atlantic Rainforest and the Cerrado being the most intensively sampled and studied biomes in the country. In times of “scientific reductionism”, with botanical and mycological sciences suffering pervasive depreciation in recent decades, the first online Flora of Brazil 2020 significantly enhanced the quality and quantity of taxonomic data available for algae, fungi, and plants from Brazil. This project also made all the information freely available online, providing a firm foundation for future research and for the management, conservation, and sustainable use of the Brazilian funga and flora