Relation of neck circumference and relative muscle strength and cardiovascular risk factors in sedentary womenRelação da circunferência do pescoço com a força muscular relativa e os fatores de risco cardiovascular em mulheres sedentárias ). Based on the neck circumference, the sample was divided into two groups: Group Circumference <35cm (n=27) and Group Circumference ≥35cm (n=33) to compare relative muscle strength and cardiovascular risk factors. The correlation between variables was tested by Pearson and Spearman correlations, with a significance level established at p<0.05. Results: The findings revealed that women with neck circumference ≥35cm presented higher values of body mass, waist circumference, body adiposity index, body mass index, systolic blood pressure, blood glucose, glycated hemoglobin and volume of visceral fat when compared with the group with neck circumference <35cm. Additionally, the group with larger neck circumference presented lower values of relative strength. Conclusion: Neck circumference seems to be an important predictive factor of cardiovascular risk and of relative strength loss in middleaged sedentary women.
Objective: To verify the alterations promoted by creatine supplementation in the anthropometric variables and the resultant of dynamic maximum strength (RDMS) in college students submitted to 8 wk of strength training. Methodology: The sample consisted of 18 male college students, aged between 19 to 25 years. Height (cm), body mass (kg) and tests of maximum voluntary muscular action (1MVMA) weight in the squat were determined prior to the training. The subjects were divided in two groups: A (creatine) or B (placebo). The double-blind protocol was adopted. After 8 weeks of strength training, the tests battery from the pre-training was repeated. Results: After 8 wk of training, it was verified that both groups had statistically significant (SS) alterations in the RDMS in all the exercises (p = 0.007 / 0.008). The analysis of the percentile improvement (PI) and the RDMS delta in the squat exercises, military press and close-grip-extensions, showed that group A had positive SS alterations higher than group B (p = 0.008 / 0.038). Lean body mass only SS increased in group A (p = 0.038). However, the percentage of body fat did not show alterations in none of the groups. The relationship between the PI of the arm and forearm circumferences (C) and the PI in the RDMS of the development exercise was SS (r = 0.481 and 0.546, respectively), as well as between the PI in the thigh C and the PI of the RDMS of the squat exercise (r = 0.619). Conclusion: Regardless the substance ingested, strength training was able to increase in RDMS; however, creatine supplementation was shown to be more efficient that the placebo, showing higher percentual and delta improvement in strength.
ResumoO presente estudo teve por objetivo analisar os interesses dos futuros profissionais de Educação Física nas diferentes subáreas que o curso pode oferecer, o conhecimento sobre o campo de atuação possível para cada uma dessas subáreas e os motivos que influenciaram nessa escolha. Participaram do estudo 840 alunos, os quais responderam a um questionário fechado sobre os assuntos mencionados acima. Após realizar os agrupamentos pertinentes aplicou-se à prova estatística de qui-quadrado, para verificar a associação entre respostas e agrupamentos. Apesar das associações estatisticamente significativas entre as opções para campo de atuação e os fatores graduação e gênero, em ambos os casos o interesse voltou-se para a atuação em clubes. Observou-se ainda incoerência entre o curso escolhido e a área de atuação para todos os agrupamentos. Palavras-Chave: Educação Física; Área de atuação; Área acadêmica; Licenciatura; Bacharelado; Motivos para escolha. Introdução Os primeiros cursos de preparação de profissionais de Educação Física noBrasil surgem no início da década de 30. Nessa época a implantação desses cursos estava relacionada principalmente com a área escolar, sendo denominada Licenciatura (TOJAL, 2004
Muitos estudos têm sido feitos voltados para contribuir no combate a prevenção e diminuição do número de pessoas com excesso de peso corporal (gordura corporal). No qual o aumento do gasto calórico é fundamental. O treinamento de força em circuito pode ser um método de treinamento intermediário entre os exercícios com predominância aeróbia ou anaeróbia, que parece atender as pessoas com sobrepeso. Podendo ser um método mais intenso (com características mais anaeróbias) tendo uma maior presença do metabolismo aeróbio, contribuindo com um maior gasto calórico durante o exercício e na sua recuperação, através de um maior EPOC, totalizando em um maior gasto calórico durante as 24 horas do dia ao individuo.
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