A INGESTÃO DO ANTI-INFLAMATÓRIO NÃO ESTEROIDE NAPROXENO AFETA PARÂMETROS NEUROMUSCULARES E METABÓLICOS?

O naproxeno, assim como outros anti-inflamatórios não esteroides (AINEs), está entre os medicamentos mais prescritos no mundo. O objetivo do presente estudo é analisar o efeito da ingestão de naproxeno em parâmetros neuromusculares e determinar seu efeito no dano muscular por meio do uso do marcador lactato. Metodologicamente, foi conduzido um estudo cruzado randomizado, duplo-cego e controlado por placebo em 11 homens treinados em resistência, que realizaram uma sessão de treinamento de força após ingerir 500 mg de naproxeno e outra sessão de treinamento após ingerir um placebo. Os participantes realizaram três séries de supino horizontal com uma carga de 90% da repetição máxima (1RM) até a falha concêntrica. As variáveis de resultado incluíram número de repetições, carga de trabalho e lactato. Os resultados mostraram que há uma correlação positiva e moderada entre as variáveis somatório de repetições e carga total e entre as variáveis lactato e carga total, no grupo naproxeno. No grupo placebo, a correlação positiva e moderada deu-se entre somatório de repetições e carga total. Na análise magnitude baseada nas interferências, as variáveis se mostraram possíveis para uma probabilidade positiva ou trivial e improvável para uma probabilidade negativa. Concluiu-se no presente estudo que o uso do naproxeno como recurso ergogênico no treinamento de força reduz a percepção de fadiga, mas não tem efeito direto no dano muscular, analisado a partir do marcador lactato, logo não interfere de maneira significativa nos parâmetros neuromusculares analisados

Heart Rate Behavior and its variability in Crossfit® practitioners

Objetivo: Analisar os comportamentos da pressão arterial, frequência cardíaca (FC) e da sua variabilidade (VFC) em praticantes de CrossFit®.Metodologia: Medidas antropométricas, capacidade aeróbica, pressão arterial, FC e VFC foram realizadas ao início e ao final de 12 semanas de treino. A capacidade aeróbica foi mensurada a partir de teste progressivo em cicloergômetro e a VFC através de registros em frequencímetro da marca Polar. As comparações estatísticas foram feitas através do teste T de student.Resultados: Somente uma das variáveis propostas para análise antropométrica apresentou diferença significativa, que foi o aumento de massa muscular. SD1 e SD2 não apresentaram diferença significativa, porem houve um aumento. A pressão apresentou-se estável.Conclusão: Os comportamentos da frequência cardíaca e de sua variabilidade com o treinamento de CrossFit®, apresentaram evidências de modificações autonômicas no controle da frequência cardíaca. Sugere-se alterações benéficas da função autonômica cardíaca com o aumento da variabilidade cardíaca.Objective: To analyze the behavior of blood pressure (BP), heart rate (HR) and its variability (HRV) in CrossFit® practitioners.Material and Methods: The CrossFit® method was applied to 10 individuals of both sexes, three times a week, for twelve weeks. The outcome variables were anthropometric measures, aerobic capacity, BP, HR and HRV at rest and after twelve weeks of training. The aerobic capacity was measured from a progressive test in a cycle ergometer and the HRV through records in a Polar brand frequency meter. Statistical comparisons were made using the Student t test. Results: Only the variable lean mass (kg) showed a statistically significant difference (p=0.058). The registry variables of the HRV (SD1 and SD2) did not present a significant difference, however, they had a small increase. BP remained stable and unchanged before and after training.Conclusion: The beneficial influence of CrossFit® training on subjects’ body composition and HRV values suggests that this type of training plays an important role in maintaining the health of normal individuals, as well as in cardiac parasympathetic modulation

ANTHROPOMETRIC CHARACTERISTICS AND LOW MEMBER POWER IN UNIVERSITY PLAYERS OF RUGBY-7

The objective of this study was to compare the anthropometric and lower limb power (PMI) variables in a sample of rugby-7 players holding different positions. Twenty-two rugby-7 college players participated; according to the positions occupied on the playing field, they were classified in back and forward. The protocol of seven skin folds of Jackson & Pollock was used to evaluate the percentage of fat; and for the PMI tests vertical jump (CMJ), horizontal jump and triple jump. The T-test for paired samples was adopted, being p < 0.05, to compare the study variables. The results indicated a significant difference between the total mass (p < 0,01), the fat-free mass (p < 0,05), the fat mass (p < 0,01), and the CMJ (p < 0,005) between the groups. It is observed that the anthropometric demands for the forwards are different from the backs, due to the characteristic of the game position, which requires a different physical and morphological configuration

Efeito do gengibre no poder anaeróbico de membros inferiores de ginastas da seleção brasileira

Introduction: Aerobic gymnastics is a sport that has consistently grown over the previous decades, and its practice demands its athletes to perform complex and high-intensity movements. Objective: The study was to analyze whether ginger supplementation had an ergogenic effect on the anaerobic power of limbs (PAMI) in aerobic gymnastic athletes. Methods: A randomized double-blind placebo-controlled trial was conducted with nine athletes (23.11 + 4.14 years, 1.63 + 0.09 m, 60.51 + 7.38 kg) from the Brazilian National Team of Aerobic Gymnastics. After ingesting 400 mg of Zingiber officinale or placebo for seven days, the subjects underwent an anaerobic power test (RAST). Peak Velocity and Peak power (m/s and W), average and minimum power (W), and fatigue index (W/s and %) data were obtained from the RAST. Results: After verifying the no normality of the sample, the Mann-Whitney was applied, but no significant differences were found in the peak velocity of the ginger supplementation (6.28 ± 0.41 m/s; 445.28 ± 117.15 W) compared to placebo (6.22 ± 0.45 m/s; 425.95 ± 130.39 W). Conclusions: It is concluded that ingesting 400 mg of Z. officinale does not have an ergogenic effect on the anaerobic power of the lower limbs of aerobic gymnastic athletes.Introdução: a ginástica aeróbica é um esporte que tem crescido consistentemente nas últimas décadas, e sua prática exige que seus atletas realizem movimentos complexos e de alta intensidade. Objetivo: analisar se a suplementação com gengibre tem efeito ergogênico no poder anaeróbico dos membros (PAMI) em atletas de ginástica aeróbica. Métodos: foi realizado um estudo randomizado, duplo-cego, controlado por placebo, com nove atletas (23,11 + 4,14 anos, 1,63 + 0,09 m, 60,51 + 7,38 kg) da Seleção Brasileira de Ginástica Aeróbica. Após a ingestão de 400 mg de Zingiber officinale ou placebo por sete dias, os indivíduos foram submetidos a um teste de potência anaeróbica (RAST). Os dados de Velocidade de pico e Potência de pico (m/s e W), potência média e mínima (W) e índice de fadiga (W/s e %) foram obtidos no RAST. Resultados: Após verificar a não normalidade da amostra, foi aplicado o Mann-Whitney, mas não foram encontradas diferenças significativas na velocidade de pico da suplementação de gengibre (6,28 ± 0,41 m / s; 445,28 ± 117,15 W) em comparação ao placebo (6,22 ± 0,45 m / s; 425,95 ± 130,39 W). Conclusões: conclui-se que a ingestão de 400 mg de Z. officinale não exerce efeito ergogênico no poder anaeróbico dos membros inferiores de atletas de ginástica aeróbica

The impact of surgical delay on resectability of colorectal cancer: An international prospective cohort study

AIM: The SARS-CoV-2 pandemic has provided a unique opportunity to explore the impact of surgical delays on cancer resectability. This study aimed to compare resectability for colorectal cancer patients undergoing delayed versus non-delayed surgery. METHODS: This was an international prospective cohort study of consecutive colorectal cancer patients with a decision for curative surgery (January-April 2020). Surgical delay was defined as an operation taking place more than 4 weeks after treatment decision, in a patient who did not receive neoadjuvant therapy. A subgroup analysis explored the effects of delay in elective patients only. The impact of longer delays was explored in a sensitivity analysis. The primary outcome was complete resection, defined as curative resection with an R0 margin. RESULTS: Overall, 5453 patients from 304 hospitals in 47 countries were included, of whom 6.6% (358/5453) did not receive their planned operation. Of the 4304 operated patients without neoadjuvant therapy, 40.5% (1744/4304) were delayed beyond 4 weeks. Delayed patients were more likely to be older, men, more comorbid, have higher body mass index and have rectal cancer and early stage disease. Delayed patients had higher unadjusted rates of complete resection (93.7% vs. 91.9%, P = 0.032) and lower rates of emergency surgery (4.5% vs. 22.5%, P < 0.001). After adjustment, delay was not associated with a lower rate of complete resection (OR 1.18, 95% CI 0.90-1.55, P = 0.224), which was consistent in elective patients only (OR 0.94, 95% CI 0.69-1.27, P = 0.672). Longer delays were not associated with poorer outcomes. CONCLUSION: One in 15 colorectal cancer patients did not receive their planned operation during the first wave of COVID-19. Surgical delay did not appear to compromise resectability, raising the hypothesis that any reduction in long-term survival attributable to delays is likely to be due to micro-metastatic disease

Práticas de Treinamento e Desenvolvimento de Pessoas em Prestadoras de Serviços e Comércio / Practice for Training and Development of People in Service Providers and Commercial

Neste estudo, buscou-se entender como as empresas gerenciam essas atividades de Treinamento e Desenvolvimento de pessoas. Foi desenvolvida uma pesquisa quantiqualitativa. Os dados foram coletados em empresas comerciais dos municípios de Lavras, Varginha, Alfenas, Pouso Alegre e Três Corações - MG entre os meses de outubro de 2010 a março de 2011, através de entrevista e questionário. Os resultados indicaram que a maioria das empresas utiliza a avaliação de desempenho, observação direta e solicitação de supervisores e gerentes para subsidiar as ações de treinamento e desenvolvimento. Palavras chave: Treinamento. Desenvolvimento. Gestão de Pessoas.  ABSTRACT  In this study, we sought to understand how companies manage their training and development activities. Quantitative - qualitative research was developed. Data wer collected in commercial companies of Lavras, Varginha, Alfenas, Pouso Alegre and Três Corações - MG between October 2010 and March 2011, through interview and questionnaire. The results indicated that most companies use the performance evaluation, direct observation and request from supervisors and managers to support the training and development activities. Keywords: Training. Development. People Management.

Características antropométricas y potencia de miembros inferiores en jugadores universitarios de rugby-7

The objective of this study was to compare the anthropometric and lower limb power (PMI) variables in a sample of rugby-7 players holding different positions. Twenty-two rugby-7 college players participated; according to the positions occupied on the playing field, they were classified in back and forward. The protocol of seven skin folds of Jackson & Pollock was used to evaluate the percentage of fat; and for the PMI tests vertical jump (CMJ), horizontal jump and triple jump. The T-test for paired samples was adopted, being p < 0.05, to compare the study variables. The results indicated a significant difference between the total mass (p < 0,01), the fat-free mass (p < 0,05), the fat mass (p < 0,01), and the CMJ (p < 0,005) between the groups. It is observed that the anthropometric demands for the forwards are different from the backs, due to the characteristic of the game position, which requires a different physical and morphological configuration.El objetivo de este estudio fue comparar las variables antropométricas y de potencia de miembros inferiores (PMI) en una muestra de jugadores de rugby-7 de diferentes posiciones. Participaron 22 jugadores universitarios clasificados de acuerdo con las posiciones ocupadas en el terreno de juego en back y forward. Para evaluar el porcentaje de grasa, se utilizó el protocolo de 7 pliegues cutáneos de Jackson & Pollock, y para las pruebas de PMI salto vertical (CMJ), salto horizontal y salto triple. Con el afán de comparar las variables del estudio, fue adoptado el test T para muestras pareadas, siendo el p < 0,05. Los resultados indicaron una diferencia significativa entre la masa total (t = , p < 0,01), la masa libre de grasa (p < 0,05), la masa adiposa (p < 0,01) y el CMJ (p < 0,005) entre los grupos. Se observa que las características antropométricas y neuromusculares para los forwards son distintas de las de los backs, debido a la posición de juego, que requiere una configuración morfológica y física distinta

The impact of surgical delay on resectability of colorectal cancer: An international prospective cohort study

AimThe SARS-CoV-2 pandemic has provided a unique opportunity to explore the impact of surgical delays on cancer resectability. This study aimed to compare resectability for colorectal cancer patients undergoing delayed versus non-delayed surgery.MethodsThis was an international prospective cohort study of consecutive colorectal cancer patients with a decision for curative surgery (January-April 2020). Surgical delay was defined as an operation taking place more than 4 weeks after treatment decision, in a patient who did not receive neoadjuvant therapy. A subgroup analysis explored the effects of delay in elective patients only. The impact of longer delays was explored in a sensitivity analysis. The primary outcome was complete resection, defined as curative resection with an R0 margin.ResultsOverall, 5453 patients from 304 hospitals in 47 countries were included, of whom 6.6% (358/5453) did not receive their planned operation. Of the 4304 operated patients without neoadjuvant therapy, 40.5% (1744/4304) were delayed beyond 4 weeks. Delayed patients were more likely to be older, men, more comorbid, have higher body mass index and have rectal cancer and early stage disease. Delayed patients had higher unadjusted rates of complete resection (93.7% vs. 91.9%, P = 0.032) and lower rates of emergency surgery (4.5% vs. 22.5%, P ConclusionOne in 15 colorectal cancer patients did not receive their planned operation during the first wave of COVID-19. Surgical delay did not appear to compromise resectability, raising the hypothesis that any reduction in long-term survival attributable to delays is likely to be due to micro-metastatic disease