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      Relação da circunferência do pescoço com a força muscular relativa e os fatores de risco cardiovascular em mulheres sedentárias Translated title: Relation of neck circumference and relative muscle strength and cardiovascular risk factors in sedentary women

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          Abstract

          OBJETIVO: O objetivo do presente estudo foi verificar a relação da circunferência do pescoço com a força muscular relativa e os fatores de risco cardiovascular em mulheres sedentárias. MÉTODOS: Estudo transversal, realizado com 60 mulheres pré-menopausadas (33,9±9,1 anos; 67,4±13,6kg; 1,57±0,06cm e 27,2±5,3kg/m²). Com base no valor da circunferência do pescoço, a amostra foi dividida em dois grupos: Grupo Circunferência <35cm (n=27) e Grupo Circunferência >35cm (n=33), para efeito de comparação da força muscular relativa e dos fatores de risco cardiovascular. A correlação entre as variáveis foi testada por meio da correlação de Pearson e de Spearman; o nível de significância foi estabelecido em p<0,05. RESULTADOS: Os resultados demonstram que as mulheres com circunferência do pescoço >35cm apresentaram maiores valores de massa corporal, circunferência da cintura, índice de adiposidade corporal, índice de massa corporal, pressão arterial sistólica, glicemia, hemoglobina glicada e volume de gordura visceral, quando comparadas ao grupo com circunferência do pescoço <35cm. Adicionalmente, o grupo com maior circunferência do pescoço apresentou menores valores de força relativa. CONCLUSÃO: A circunferência do pescoço parece ser um importante fator de predição de risco cardiovascular e perda de força relativa em mulheres sedentárias de meia idade.

          Translated abstract

          OBJECTIVE: To verify the relation of neck circumference and relative muscle strength and cardiovascular risk factors in sedentary women. METHODS: A cross-sectional study with 60 premenopausal women (33.9±9.1 years; 67.4±13.6kg; 1.57±0.6cm and 27.2±5.3kg/m²). 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 middle-aged sedentary women.

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          Progressive resistance exercise and resting blood pressure : A meta-analysis of randomized controlled trials.

          Hypertension is a major public health problem affecting an estimated 43 million civilian, noninstitutionalized adults in the United States (24% of this population). The purpose of this study was to use the meta-analytic approach to examine the effects of progressive resistance exercise on resting systolic and diastolic blood pressure in adult humans. Studies were retrieved via (1) computerized literature searches, (2) cross-referencing from original and review articles, and (3) review of the reference list by 2 experts on exercise and blood pressure. Inclusion criteria were as follows: (1) trials that included a randomized nonexercise control group; (2) progressive resistance exercise as the only intervention; (3) adult humans; (4) journal articles, dissertations, and masters theses published in the English-language literature; (5) studies published and indexed between January 1966 and December 1998; (6) resting systolic and/or diastolic blood pressure assessed; and (7) training studies lasting a minimum of 4 weeks. Across all designs and categories, fixed-effects modeling yielded decreases of approximately 2% and 4% for resting systolic and diastolic blood pressure, respectively (mean+/-SD systolic, -3+/-3 mm Hg; 95% bootstrap CI, -4 to -1 mm Hg; mean+/-SD diastolic, -3+/-2 mm Hg; 95% bootstrap CI, -4 to -1 mm Hg). It was concluded that progressive resistance exercise is efficacious for reducing resting systolic and diastolic blood pressure in adults. However, a need exists for additional studies that limit enrollment to hypertensive subjects as well as analysis of data with an intention-to-treat approach before the effectiveness of progressive resistance exercise as a nonpharmacological intervention can be determined.
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            Impact of progressive resistance training on lipids and lipoproteins in adults: a meta-analysis of randomized controlled trials.

            Given the discrepant findings of progressive resistance training (PRT) on lipids and lipoproteins in adults, we used the meta-analytic approach to examine this issue. Randomized controlled trials > or =4 weeks dealing with the effects of PRT on lipids and lipoproteins in adult humans > or =18 years of age and published between January 1, 1955 and July 12, 2007 were included. Primary outcomes included total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), ratio of total cholesterol to high-density lipoprotein cholesterol (TC/HDL-C), non-high-density lipoprotein cholesterol (non-HDL-C), low-density lipoprotein cholesterol (LDL-C), and triglycerides (TG). A random-effects model was used for analysis with data reported as means and 95% confidence intervals. Twenty-nine studies representing 1329 men and women (676 exercise, 653 control) were included. Statistically significant improvements were found for TC (-5.5 mg/dl, -9.4 to -1.6), TC/HDL-C (-0.5, -0.9 to -0.2), non-HDL-C (-8.7 mg/dl, -14.1 to -3.3), LDL-C (-6.1 mg/dl, -11.2 to -1.0) and TG (-8.1 mg/dl, -14.5 to -1.8) but not HDL-C (0.7 mg/dl, -1.2 to 2.6). Changes were equivalent to -2.7%, 1.4%, -11.6%, -5.6%, -4.6%, and -6.4%, respectively, for TC, HDL-C, TC/HDL-C, non-HDL-C, LDL-C, and TG. Progressive resistance training reduces TC, TC/HDL-C, non-HDL-C, LDL-C and TG in adults.
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              Relationship between changes in neck circumference and cardiovascular risk factors.

              Neck circumference (NC) is a simple screening measure for identifying overweight and obese patients. The main aim of the present study was to determine the relationship between changes in NC and changes in cardiovascular risk factors by evaluating some components of the metabolic syndrome. The present longitudinal cohort study included 364 subjects (155 men and 209 women) with no known major medical conditions and who were not receiving any medication. Main indicators included NC, waist circumference, waist-to-hip ratio, body mass index, and fasting lipoprotein, glucose and uric acid levels. Pearson's correlation coefficients indicated a significant association between changes in NC and changes in body mass index (men, r=0.67; women, r=0.69; each, P<0.0001), waist circumference (men, r=0.69; women, r=0.56; each, P<0.0001), waist-to-hip ratio (men, r=0.27; women, r=0.33; each, P<0.0001), and total cholesterol (men, r=0.68; women, r=0.64; each, P<0.0001), low density lipoprotein cholesterol (men, r=0.58; women, r=0.59; each, P<0.0001), triglyceride (men, r=0.48; women, r=0.44; each, P<0.0001), glucose (men, r=0.51; women, r=0.44; each, P<0.0001) and uric acid (men, r=0.42; women, r=0.47; each, P<0.0001) levels. The relative changes in NC contributed to independent significant changes in total cholesterol (8% for men and 1% for women), low density lipoprotein cholesterol (1% for men and 1% for women) and triglycerides (23% for men); it did not significantly contribute to changes in high density lipoprotein cholesterol, glucose or uric acid levels. Changes in NC are positively correlated with changes in some factors of the metabolic syndrome and, therefore, are correlated with changes in the risk of cardiovascular disease.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                eins
                Einstein (São Paulo)
                Einstein (São Paulo)
                Instituto Israelita de Ensino e Pesquisa Albert Einstein (São Paulo )
                2317-6385
                September 2012
                : 10
                : 3
                : 329-334
                Affiliations
                [1 ] Universidade Católica de Brasília Brazil
                [2 ] Centro Universitário Euro-Americano Brazil
                [3 ] Universidade de Brasília Brazil
                [4 ] Universidade Federal do Paraná Brazil
                Article
                S1679-45082012000300013
                10.1590/S1679-45082012000300013
                23386013
                f7e22cb9-60b8-4897-b263-6b2f2cad6cac

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=1679-4508&lng=en
                Categories
                MEDICINE, GENERAL & INTERNAL

                Internal medicine
                Neck,Muscle strength,Anthropometry,Risk factors,Physical fitness,Sedentary lifestyle,Cardiovasular disease,Pescoço,Força muscular,Antropometria,Fatores de risco,Aptidão física,Estilo de vida sedentário,Doenças cardiovasculares

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