Efeito do treino aeróbio na variabilidade da frequência cardíaca em indivíduos com Diabetes Mellitus Tipo 2: revisão bibliográfica

Projeto de Graduação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Licenciado em FisioterapiaIntrodução: Na Diabetes Mellitus Tipo 2 (DMT2) existe uma diminuição da modulação autonómica cardíaca e uma redução da variabilidade da frequência cardíaca (VFC). Objetivo: Analisar a efetividade do treino aeróbio na VFC em pacientes com DMT2. Metodologia: Foi realizada uma pesquisa eletrónica nas bases de dados Pubmed, Physiotherapy Evidence Database (PEDro), Web of Science, MEDLINE e SPORTDiscus. Os critérios de elegibilidade definidos foram: 1) estudos experimentais do tipo randomizado controlado; 2) estudos que avaliam o efeito do treino aeróbio na VFC em pacientes com DMT2; 3) estudos em língua inglesa, portuguesa, italiana ou espanhola. Resultados: Foram incluídos 5 artigos para análise que cumpriram os critérios de seleção. Nestes artigos participaram um total de 197 indivíduos com uma idade média de 58,7 anos. Dois estudos efetuaram o treino aeróbio contínuo e 3 estudos efetuaram treino intervalado de alta intensidade (HIIT). A duração dos protocolos variou de 12 semanas a 12 meses. Quatro dos cinco estudos melhoram os valores da VFC após o treino e, apenas um, não apresentou aumento significativo neste parâmetro. Conclusão: O treino aeróbio em pacientes com DMT2 parece induzir um aumento da VFC. O HIIT supervisionado parece ser mais vantajoso, assim como uma maior frequência de treino semanal.Introduction: In Diabetes Mellitus Type 2 (DMT2) there is a decrease in cardiac autonomic modulation and a reduction in heart rate variability (HRV). Objective: Analyze the effectiveness of aerobic training in HRV in patients with DMT2. Methodology: An electronic search was carried out in the Pubmed, Physiotherapy Evidence Database (PEDro), Web of Science, MEDLINE and SPORTDiscus databases. The eligibility criteria defined were: 1) experimental studies of the randomized controlled type; 2) studies evaluating the effect of aerobic training on HRV in patients with DMT2; 3) studies in English, Portuguese, Italian or Spanish. Results: Five articles were included for analysis that met the selection criteria. A total of 197 individuals with an average age of 58.7 years participated in these articles. Two studies performed continuous aerobic training and 3 studies performed high intensity interval training (HIIT). The duration of the protocols ranged from 12 weeks to 12 months. Four of the five studies improved HRV values after training and only one did not show a significant increase in this parameter. Conclusion: Aerobic training in patients with DMT2 seems to induce an increase in HRV. Supervised HIIT seems to be more advantageous, as well as a greater frequency of weekly training.N/

Evaluation of a low-cost multithreading approach solution for an embedded system based on Arduino with pseudo-threads

Although projects using Arduino boards are becoming more and more common due to their simplicity, low cost, and a variety of applications, Arduino boards consist of a simple processor that does not allow the execution of threads. This paper presents a study and evaluation of multithreading approaches on a single Arduino board. We present a group of existing software approaches for dealing with concurrent actions on Arduino. Among the solutions presented, we propose a case study using timed interrupts due to their simplicity. Although the case study provided requires dealing with many actions concurrently, including external actions, timed interrupts showed to be a robust solution to the problem. Furthermore, the evaluated approach presented great potential for being applied and implemented commercially at low cost.info:eu-repo/semantics/publishedVersio

Oral microbiome associated with peri-implant infections – a review

Dental treatments using dental implants have been well documented over the past 40 years and with great success. The dental implant installed in the place of missing teeth should always involve proper forecasting by the dentist. Namely, it is important to know the microbiome surrounding the implant, from its planning till final rehabilitation. The exact time of microbiome formation, as well as microorganisms involved, are essential for the proper implementation and success of the implant. However, internal contaminations of the rehabilitated implants, the extracellular components of microorganisms, such as endotoxins, have a huge influence on implant success. In addition, it is also very important the knowledge concerning implants surfaces and associated microorganisms. This study conducted a literature review on the oral microbiome and its relationship with the peri-implant infection, with the discussion of several classical and current studies. Although it can be concluded that the peri-implant microbiome is characterized by the microbiome present before dental implant placing, more studies are required to better elucidate the planning and the longevity of dental implant treatment.info:eu-repo/semantics/publishedVersio

Estimação de probabilidade de transbordo do buffer em redes OFDM-TDMA utilizando cadeias de markov e curva de serviço

Este trabalho apresenta duas abordagens para estimação de probabilidade de transbordo do buffer em redes OFDM-TDMA. A primeira abordagem, se baseia em Cadeias de Markov e em Teoria de Filas para descrever o desempenho do enlace de transmissão em sistemas OFDM-TDMA. A segunda abordagem se baseia em curva de serviço e no conceito de Processo Envelope. Mais especificamente, foi proposta uma equação para estimação de probabilidade de transbordo do buffer em sistemas OFDM-TDMA. Para tal, também deduziu-se uma equação para a curva de serviço de Sistemas OFDM-TDMA. Os resultados obtidos mostram que as estimativas de probabilidade de transbordo baseadas na curva de serviço do sistema se aproximam bem dos resultados da simulação e a complexidade computacional do cálculo necessário para obtê-los é significativamente reduzida em relação ao modelo baseado em Cadeias de Markov171320This paper presents two approaches for estimating buffer overflow probability in OFDM-TDMA networks. The first approach is based on Queuing Theory and Markov Chains and is used to evaluate the performance of the transmission link in OFDM-TDMA systems. The second approach is based on Network Service Curve and Envelope Processes of the traffic flows. More specifically, it is proposed an equation to estimate the probabilityof buffer overflow in OFDM-TDMA systems. To this end, an equation for the Service Curve of the considered system, is also proposed. The results show that the estimates are very close to those obtained by simulations and that the computational complexity to obtain them are significantly reduced due to the absence of matrix computatio

Estimação de Probabilidade de Perda de Dados em Redes Através de Modelagem Multifractal de Tráfego e Teoria de Muitas Fontes

Neste artigo, propomos uma abordagem para estimação da probabilidade de perda de bytes em enlaces de redes de computadores considerando propriedades multifractais dos fluxos de tráfego. Mais especificamente, deduzimos uma expressão matemática para o cálculo da probabilidade de perda para servidores com buffer finito alimentados com fluxos multifractais de tráfego. A abordagem proposta se baseia na teoria das muitas fontes e na modelagem multifractal de tráfego baseada em cascatas multiplicativas. Por fim, avaliamos a proposta de estimação de probabilidade de perda através de simulações computacionais utilizando séries de tráfego real, verificando assim sua eficiência como ferramenta relacionada à provisão de qualidade de serviço em redes de computadores

Modelagem de Tráfego de Redes Utilizando Cascata Multifractal Generalizada

Neste artigo propomos um modelo multifractal de tráfego baseado em uma cascata multiplicativa que apresenta diferentes distribuições para os multiplicadores em cada estágio da cascata. Neste modelo, os multiplicadores são obtidos através da estimação de suas densidades de probabilidade com o uso dos métodos de Kernel e Aceitação/Rejeição aplicados a tráfego real de redes. Com o intuito de validar o modelo, realizamos análises estatísticas e do comportamento de fila dos processos de tráfego gerados segundo o modelo proposto. Verificamos também o desempenho do modelo em capturar as características dos traços reais de tráfego em comparação à outros modelos multifractais.In this paper we propose a multifractal traffic model that is based on a multiplicative cascade presenting specific multiplier distributions in each cascade stage. In the proposed model, the multipliers are obtained through the estimate of their probability densities found in real network traffic by using Kernel and Acceptance/Rejection methods. Statistical analysis and queueing behavior study were carried out for the model validation. Furthermore, we verify the model performance in capturing the traffic trace characteristics in comparison to other multifractal models

Oral microbiome associated with peri-implant infections – a review

Dental treatments using dental implants have been well documented over the past 40 years and with great success. The dental implant installed in the place of missing teeth should always involve proper forecasting by the dentist. Namely, it is important to know the microbiome surrounding the implant, from its planning till final rehabilitation. The exact time of microbiome formation, as well as microorganisms involved, are essential for the proper implementation and success of the implant. However, internal contaminations of the rehabilitated implants, the extracellular components of microorganisms, such as endotoxins, have a huge influence on implant success. In addition, it is also very important the knowledge concerning implants surfaces and associated microorganisms. This study conducted a literature review on the oral microbiome and its relationship with the peri-implant infection, with the discussion of several classical and current studies. Although it can be concluded that the peri-implant microbiome is characterized by the microbiome present before dental implant placing, more studies are required to better elucidate the planning and the longevity of dental implant treatment.info:eu-repo/semantics/publishedVersio

Modelagem de Tráfego VoIP Utilizando Misturas Gaussianas Ajustadas por Algoritmo de Maximização de Esperança e Comprimento de Descrição Mínimo

O aumento do número de aplicações que geram tráfego VoIP (Voice over IP) requer que modelos adequados para este tipo de tráfego sejam empregados para um melhor dimensionamento dos recursos da rede. Neste artigo, propomos a aplicação de Misturas Gaussianas ajustadas por um algoritmo EM (Expectation−Maximization) com seleção de número de classes utilizando o princípio do Comprimento de Descrição Mínimo (MDL-M inimum Description Length) para descrever o tráfego VoIP. Dados reais de VoIP foram coletados e séries sintéticas foram geradas de acordo com esses dados. O algoritmo proposto é comparado com o algoritmo EM e com algoritmo baseado em MDL em termos do desempenho em modelar as séries de tráfego VoIP consideradas

Feeding plans with the use of glycerin for broilers

This study aimed to evaluate the effects of feeding plans with or without addition of glycerin, in different ages, on performance, carcass yield, litter moisture and footpad lesions of broiler chickens. 540 male Cobb broilers were utilized, distributed in a completely randomized design with six treatments (treatments consisted of the inclusion or not of glycerin in diets at all periods or only at different stages: 1 to 7, 8 to 21, 22 to 33 and 34 to 42 days), in six replicates of 15 birds each. Diets were provided ad libitum. At 42 days, the average weight, weight gain, feed intake, feed conversion, carcass yield, litter moisture and footpad lesions were evaluated. There was no effect (p> 0.05) of dietary plans on the performance variables. The feeding plans did not influence (p>0,05) the carcass and cuts parameters at 42 days. However, there was significant effect (p <0.05) of the dietary plans on litter moisture and plantar lesions. Effects were observed (p>0,001) for the feeding plans, were the highest and the lowest incidence of lesions were present in the birds that consume diets with and without addition of glycerin, in the period from 1 to 42 days of age, respectively.This study aimed to evaluate the effects of feeding plans with or without addition of glycerin, in different ages, on performance, carcass yield, litter moisture and footpad lesions of broiler chickens. 540 male Cobb broilers were utilized, distributed in a completely randomized design with six treatments (treatments consisted of the inclusion or not of glycerin in diets at all periods or only at different stages: 1 to 7, 8 to 21, 22 to 33 and 34 to 42 days), in six replicates of 15 birds each. Diets were provided ad libitum. At 42 days, the average weight, weight gain, feed intake, feed conversion, carcass yield, litter moisture and footpad lesions were evaluated. There was no effect (p> 0.05) of dietary plans on the performance variables. The feeding plans did not influence (p>0,05) the carcass and cuts parameters at 42 days. However, there was significant effect (p <0.05) of the dietary plans on litter moisture and plantar lesions. Effects were observed (p>0,001) for the feeding plans, were the highest and the lowest incidence of lesions were present in the birds that consume diets with and without addition of glycerin, in the period from 1 to 42 days of age, respectively