Effects of Moderate-to-Heavy Sled Training Using Different Magnitudes of Velocity Loss in Professional Soccer Players.

ABSTRACT: Grazioli, R, Loturco, I, Lopez, P, Setuain, I, Goulart, J, Veeck, F, Inácio, M, Izquierdo, M, Pinto, RS, and Cadore, EL. Effects of moderate-to-heavy sled training using different magnitudes of velocity loss in professional soccer players. J Strength Cond Res 37(3): 629-635, 2023-This study investigated the effects of a 11-week moderate-to-heavy sled training intervention with different magnitudes of velocity loss on sprint and jump performance, mechanical muscle function, and body composition in professional soccer players. Seventeen players (age 25.8 ± 4.3 years; height 180.0 ± 8.6 cm; mass 77.7 ± 9.7 kg) were randomly allocated into 2 groups, based on different magnitudes of velocity loss: 10% of velocity decrease (G10, n = 8) and 20% of velocity decrease (G20, n = 9). The velocity-based sled training consisted of 20-m resisted sprints with a progressive loading increase from 45 to 65% of body-mass throughout the intervention. Pre-intervention and postintervention sprint and jump performance, hamstring and quadriceps peak torque and isometric rate of torque development, and lower-limb lean mass measured by dual X-ray absorptiometry were assessed and compared. Two-way repeated measures analysis of variance revealed a significant time-effect for decreases in 10- and 20-m sprint times ( p = 0.018 and p = 0.033, respectively), but without a time-group interaction. The G10 showed greater beneficial effects than G20 for both 10-m (-5.5 ± 3.3%, magnitude-based inference [MBI]: possibly vs. -1.7 ± 5.9%, MBI: possibly trivial) and 20-m (-2.5 ± 2.1%, MBI: possibly vs. -1.4 ± 3.7%, MBI: likely trivial) sprint times. Moreover, there was a significant time effect for countermovement jump height and quadriceps isometric peak torque, which decreased significantly after training ( p = 0.019 and p = 0.010, respectively), with no within-group effect of time vs. group interaction for these respective outcomes. The novel velocity-based sled model proposed here, especially under lower magnitudes of velocity loss, was able to significantly improve linear sprint performance in professional soccer players.

Influence of anxiety on blood pressure and heart rate during dental treatment / Influência da ansiedade na pressão arterial e frequência cardíaca durante o tratamento odontológico

PURPOSE: To evaluate the influence of anxiety on blood pressure and heart rate during dental care in patients of the Dentistry Clinic in Rio Preto University Center - UNIRP, São José do Rio Preto, São Paulo, Brazil. METHODS: A sample of 60 volunteers who sought for the dental screening service was selected. We used a scale to evaluate the volunteers' anxiety level. Blood pressure and heart rate of patients were also checked in different periods of the dental treatment. RESULTS: Most of the volunteers were women. The relation between anxiety and pain before treatment, revealed that 54 (90.0%) had no pain. The patients had low anxiety towards the use of different anesthetic solutions used during dental procedures. There was no statistically significant difference concerning to systolic blood pressure at first and, after application of anesthetic, given the degree of anxiety. Heart rate does not change as a function of anxiety. There is a slight change in heart rate after anesthesia, and it soon gets back to normal. CONCLUSION: There was no difference in behavior of systolic and diastolic blood pressure in relation to the anxiety level and pain, measured before, during and after the procedure. Heart rate did not change during dental treatment in the patient anxiety level.

OBJETIVO: Avaliar a influência da ansiedade detectadas por meio de uma escala de ansiedade sobre os níveis de pressão arterial e a frequência cardíaca, durante o atendimento odontológico de pacientes das Clínicas de Odontologia do Centro Universitário de São José do Rio Preto, São Paulo, Brasil. METODOLOGIA: Foram selecionados ao acaso 60 voluntários que receberam atendimento odontológico de urgência. Foi utilizada uma escala para avaliar o grau de ansiedade dos voluntários. Foi verificada também a pressão arterial e a frequência cardíaca dos pacientes em três períodos distintos: pré, trans e pós-anestesia odontológica. RESULTADOS: A ansiedade não foi afetada pelas faixas etárias, apenas pelo gênero. A ansiedade não deve ser uma barreira, entre profissional/paciente e, ainda, a ansiedade apresentada não é um sinal clínico levado em consideração para a aplicação de medidas de controle. CONCLUSÃO: Não houve alteração da pressão arterial sistólica, diastólica e da frequência cardíaca em relação ao grau de ansiedade e dor e ao tipo de solução anestésica empregada.

Procedimentos cirúrgicos bucais pré-protéticos: relato de caso / Ora Surgical procedures preprosthetic: a case report

Procedimento cirúrgico de restauração pprotética é a reabilitação dos istema mastigatório em pacientes edêntulos ou parcialmente edêntulos para colocação de uma prótese imediata que é confeccionada antes da extração dos dentes naturais, para ser instalada imediatamente após as extrações. o objetivo do estudo é descrever os procedimentos cirúrgicos pré-protéticos propostos e a preparação necessária para suportar a posterior colocação de aparelhos protéticos descritos na literatura além de relatar as anormalidades dos tecidos moles comuns nestes casos...

Surgical procedure for prosthetic restoration are used to rehabilitate the mastigatory system in edentulous or partially edentulous patients when an immediate prosthesis is planned (one that is made before the extraction of natural teeth and installed immediately after the extrations). The objective of the study is to describe the preprosthetic surgical procedures and the preparation required to support the future prosthetic devices that are described in the literature...

Cimentação de próteses metal free: dúvidas e soluções / Cementation of metal free systems: questions and solutions

O objetivo deste trabalho foi o de realizar uma revisão de literatura a respeito dos tratamentos de superfície e tipos de cimentação adesiva existentes para peças protéticas livres de metal. Com base na literatura em relação às restaurações cerâmicas com alto conteúdo de sílica, o tratamento com jateamento ou ácido fluorídrico seguido da aplicação de silano, tem demonstrado bons resultados. Nos sistemas de cerâmicas ricas em alumina, estariam indicados métodos alternativos, como a silicatização ou o uso de cimentos resinosos que contêm monômeros fosfatados.

The purpose of this paper was to review the literature about surface treatment for adhesive cementation of metal free systems. On the basis of the studied literature, it is possible to conclude that for ceramic restorations with a high level of silica, the treatment with sandblasting or fluoridric acid before silane application has showed good results. For alumina-based ceramics are more indicated systems like Rocatec and resin cements with MDP or phosphate monomers.