Lazer e musculação: um estudo de caso em uma academia na região periférica na cidade de Belo Horizonte / Leisure and weight-training: a study case at a gym in peripherial area in the city of Belo Horizonte

Este estudo teve como objetivo investigar, em uma academia da região do Barreiro, zona periférica de Belo Horizonte, se a musculação pode ser considerada como uma atividade de lazer para os seus praticantes. Como estratégia foi realizado um estudo de caso, com abordagem qualitativa e quantitativa. Para coleta de dados, utilizamos de um questionário padronizado e observação participante. Participaram da pesquisa, ao todo, 145 voluntários. Constatou-se que a maioria dos participantes da pesquisa consideram a prática de musculação como uma atividade de lazer, possibilitando espaços de sociabilidade e confraternizações. Não obstante, observamos que, para esses praticantes, o principal motivo para o ingresso e permanência na atividade é a estética corporal (hipertrofia muscular), podendo a musculação ser considerada um estilo de vida prazeroso que possui uma relevância fundamental para os sujeitos pesquisados.

This study aimed to investigate, in a gym of Barreiro's region, peripheral zone of Belo Horizonte, if the weight-training can be considered as a leisure activity to your practitioners. As strategy a study case was conducted, with a qualitative and quantitative approach. In order to collect data, we used a standardized questionnaire and participant observation. 145 volunteers participated in the research. It was found that most research participants consider the practice of weight-training as a leisure activity, which enables spaces for sociability and confraternization. Nevertheless, we observed that, for these practitioners, the main reason for entering and remaining in the activity is body aesthetics (muscular hypertrophy), and weight-training can be considered a pleasant lifestyle that has a fundamental relevance for the researched subjects.

Atipicidad en el hipotiroidismo congénito: síndrome de Kocher-Debré-Semelaigne. Reporte de caso / Atypicality in congenital hypothyroidism: Kocher-Debré-Semelaigne. Case report

El síndrome de Kocher Debré Semelaigne (SKDS) se describe dentro de las formas clínicas atípicas asociadas al hipotiroidismo congénito (HC) severo, no tratado y de larga evolución, con manifestaciones de pseudohipertrofia muscular difusa y debilidad muscular predominantemente proximal, reversible al reemplazo con tiroxina. Es raro en países con programas de pesquisa neonatal. Objetivo: reportar el caso de un niño con diagnóstico de HC por disembriogenesis (atireosis), que se mantuvo con mal control de la enfermedad durante el primer año de vida y manifestaciones miopáticas desde la etapa neonatal. Resultados: se confirma el diagnóstico a través de estudios específicos, con evidencias de patrones miopáticos característicos. Se logra regresión clínica parcial a los nueve meses de mantener estabilidad de la TSH y las hormonas tiroideas (HT), coincidiendo con la normalización de la enzima de músculo creatinfosfoquinasa (CPK). A los 12 años de seguimiento, mantenía ligera hipertrofia de la musculatura de las extremidades superiores, dorsales y glúteos, a pesar de mantenerse eutiroideo. Conclusiones: la presencia de hipertrofia muscular debe considerarse un dato clínico de sospecha de hipotiroidismo, aun con la implementación de los programas de pesquisa neonatal. Es posible la regresión parcial de la pseudohipertrofia muscular con el restablecimiento de la función tiroidea. Se debe tomar en cuenta en el diagnóstico diferencial de otras miopatías primarias

Kocher-Debré-Semelaigne Syndrome (SKDS) is described within the atypical clinical forms associated with severe, untreated and long-standing congenital hypothyroidism with manifestations of diffuse muscle pseudohypertrophy and predominantly proximal muscle weakness, reversible to replacement with levothyroxine. objective: To report the case of a child with congenital hypothyroidism due to disembriogenesis (atyreosis), who remained with poor control of the disease during the 1st year of life and myopathic manifestations from de neonatal stage. Results: The diagnosis is confirmed through specific studies, with evidence of characteristic myopathic patterns. Partial clinical regression is achieved 9 months after maintaining stability of TSH and thyroid hormones, coinciding with the normalization of the muscle enzyme creatine phosphokinase (CPK). At 12 years of follow-up, he maintained slight hypertrophy of the muscle of the upper extremities, dorsal and buttocks, despite remaining euthyroid. Conclusions: The presence of muscular hypertrophy should be considered a clinical finding of suspected hypothyroidism, even with the implementation of neonatal screening programs. Partial regression of muscle pseudohypertrophy is possible with restoration of thyroid function, and should be taken into account in the differential diagnosis of other primary myopathies

Effects of Low-to-Moderate Doses of Anabolic Steroids on Lipid Profile and Muscle Hypertrophy in Resistance Training Practitioners: A Systematic Review with Meta-Analysis

Abstract Background: The use of androgenic anabolic steroids (AAS) is prevalent among young bodybuilders, motivated by aesthetic results. Although the medical community condemns this practice for its potential deleterious effect, we must recognize the need for more scientific research on the likelihood and magnitude of the adverse events. Objective: To evaluate whether high-quality, scientific evidence supports that AAS negatively affect lipid profile and promote muscle hypertrophy in resistance training practitioners. Methods: A systematic review of the literature of randomized clinical trials was conducted in the PubMed / Medline, Scielo and Science direct databases. The searches were conducted by two independent researchers by June 2018. A significance level of 5% was considered in the analysis. Results: Six clinical trials involving 170 resistance training practitioners were included. A significant heterogeneity was found in studies evaluating the effects of AAS on lipid profile and muscle hypertrophy (I² = 97, 95 and 91%, respectively), with no significant effects on HDL-cholesterol (-5.62mg/dL, 95%CI −12.10, 0.86, p= 0.09), LDL-cholesterol (7.76 mg/dL, 95%CI −9.70, 25.23, p= 0.57) and muscle hypertrophy (2.44kg 95%CI 0.02, 4.86, p=0.05). Conclusion: Current evidence does not support that low-to-moderate doses of AAS cause serious negative effects on lipid profile or promote muscle hypertrophy in resistance training practitioners.

A densidade como uma nova métrica da quantificação de cargas no treinamento de força / Density as a new metric to quantify strength training loads

O objetivo do estudo foi realizar um breve comunicado sobre a adoção da densidade com uma nova métrica de quantificação de cargas no treinamento de força. Descrevemos como quantificá-la e destacamos as possíveis implicações da sua manipulação. Uma vez que considera o intervalo de recuperação entre as séries - onde podem ocorrer processos metabólicos importantes, como a ressíntese de fosfocreatina - a densidade pode ser um parâmetro representativo da magnitude do estresse metabólico induzido pelas sessões. Recomendamos que treinadores e pesquisadores da área de ciências do esporte passem a reportar quantificar e reportar a densidade dos treinos. Técnicas de treinamento que manipulam as pausas entre as séries, repetições e exercícios, como os treinos em circuito, o restpause, cluster training, intra-set rest e/ou inter-repetion rest, podem ter novas análises e, consequentemente, resultados interessantes a serem reportados.(AU)

The aim of the study was to provide a short communication about the adoption of density as a new metric to quantify strength training loads. We describe how quantify and highlighted the possible implications of density manipulation. Since considers the rest interval between sets - where important metabolic process such as phosphocreatine resynthesizes may occurs ­ density may represent the magnitude of metabolic stress induced by training session. In this sense, is recommended that sports sciences coach's and researchers report the training density. Training techniques that manipulate the rest intervals between sets, repetitions, and exercises, such as circuit tra ining, rest pause, cluster training, intra-set rest, and/or inter-repetition rest may have new analysis, and consequently interesting results to be reported.(AU)

Is the weekly sets volume training performed by trained subjects in accordance with training recommendations guidelines for muscle hypertrophy?

Abstract AIM the aim of this study was to analyze the weekly sets volume (WSV) performed by trained men and women for each muscle group in muscle hypertrophy programs. METHODS One hundred and five resistance training practitioners of both sex (42 women, 29.8±5.7 years; 63 men, 28.5±5.7 years) consented to the analysis of their current training programs. Their training plains were analyzed by a researcher that used the following equation to determine the WSV performed for each muscle group: "number of exercises per muscle group per training session X number of sets per exercise in each training session X weekly training frequency per muscle group". The median values ​​by each muscle group were compared within and between genders. RESULTS Between group analysis demonstrated that men performed higher WSV for upper body (UB) muscles than women (47.2±14,6 vs. 18.2±7.4 sets). Conversely, women performed a higher WSV for lower body (LB) muscle groups than men (23.8±11.2 vs. 11.5±7.0 sets). The training volume for the abdominal muscles did not differ between groups. When comparing the WSV for the UB, LB and core musculature within groups, men perform higher training volumes for the UB compared to the LB and core, while women train the LB with a higher volume compared to the other musculature. CONCLUSION For some muscle groups, the WSV is higher than recommended in the literature for muscle hypertrophy. Men emphasize the UB training, while women emphasize training the LB. Moreover, the WSV performed by subjects of both genders is disproportionate between different muscle groups.