Actividad electromiografica de los isquiotibiales, sometidos a una única sesión de flexibilidad estática usando vendaje neuromuscular / Atividade eletromiografíca dos isquiotibiais, submetidos a uma única sessão de flexibilidade estática usando bendagem neuromuscular / Actividad electromiografi ca de los isquiotibiales, sometidos a una única sesión de fl exibilidad estática usando vendaje neuromuscular

El objetivo del estudio fue verifi car si la aplicación de vendaje neuromuscular (Kinesio Taping), y ejercicios de fl exibilidad estáticos afecta signifi cativamente la actividad electromiográfi ca de los músculos isquiotibiales, el rendimiento en un Test de fl exibilidad estática o la dimensión angular del ángulo poplíteo. La muestra de este estudio estuvo compuesta por 23 sujetos con una edad promedio de 24.65σ4.31, aos ambos sexos. Fueron divididos en cuatro grupos, a todos se les midió la masa corporal y la estatura y se obtuvo el IMC. La evaluación de la fl exibilidad fue realizada a través de dos pruebas, el test de sentar y alcanzar y la angulación del ángulo poplíteo. Las señales electromiográfi cas fueron evaluadas por medio de un electromiógrafo. Todos los grupos realizaron fl exibilidad estática, mediante seis series de 10 segundos, en dos grupos se controló la percepción del esfuerzo por medio de la PERFLEX, mientras que a los otros dos grupos se les aplicó el vendaje neuromuscular una hora antes del test. Se realizó una ANOVA, luego se efectu un post-hoc de Tukey, con un nivel de signifi cancia establecido p<0.05. Se encontraron diferencias signifi cativas entre los grupos en el test de sentar y alcanzar (p< 0.001); en la angulación (p< 0.001); en la señal de EMG Canal 1 (p<0.001) y en la señal de EMG canal 2 (p< 0.02). Se concluye que, existe infl uencia del vendaje neuromuscular, de los ejercicios de fl exibilidad, mejorando la fl exibilidad de los músculos isquiotibiales, aumentando la angulación del ángulo poplíteo y disminuyendo la actividad electromiográfi ca de los músculos isquiotibiales....(AU)

O objetivo desse estudo foi verifi car se a aplicação da bandagem neuromuscular (Kinesio Taping), exercícios de fl exibilidade estática afeta signifi cativamente a atividade eletromiográfi ca dos músculos isquiotibiais, no rendimento de um teste de fl exibilidade estática e na dimensão angular do ângulo poplíteo. A amostra desse estudo foi composta por 23 sujeitos com média de idade de 24.65σ4.31, de ambos os sexos. Foram divididos em quatro grupos, em todos foi medida a massa corporal e a estatura e se obteve o IMC. A avaliação da fl exibilidade foi realizada através da dos testes de sentar e alcançar e a angulação do ângulo poplíteo. Os sinais eletromiográfi cos foram avaliados por meio de um eletromiografi co. Todos os grupos realizaram fl exibilidade estática, mediante seis séries de 10 segundos, um dois grupos se se controlou a percepção de esforço por meio da PERFLEX, enquanto os outros dois grupos se aplicou a bandagem neuromuscular uma hora antes do teste. Realizou-se o teste de ANOVA, logo se efetuou o post-hoc de Tukey, com nível de signifi cância estabelecido em p<0.05. Encontraram-se diferenças signifi cativas em os grupos no teste de sentar e alcançar (p< 0.001); na angulação (p< 0.001); no sinal de EMG Canal 1 (p<0.001) e no sinal de EMG canal 2 (p< 0.02). Conclui-se que, existe infl uência da bandagem neuromuscular, nos exercícios de fl exibilidade, melhorando a fl exibilidade dos músculos isquiotibiais, aumentando a angulação do ângulo poplíteo e diminuindo a atividade eletromiográfi ca dos músculos isquiotibiais....(AU)

Resistance exercise alone improves muscle strength in growth hormone deficient males in the transition phase.

Background During the transition phase (TP), patients with growth hormone deficiency (GHD) exhibit decreased muscle strength. Studies assessing the effects of resistance exercise alone on muscle strength in these individuals are scarce. The objective of this study was to evaluate the effects of a program of resistance exercise (PRE) on parameters of muscle strength in subjects in the TP and with childhood-onset GHD treated with recombinant GH (rGH). Methods Sixteen male patients were enrolled and divided into two groups: GHD (n=9) and GH sufficiency (GHS, n=7). Patients with GHD underwent a 12-week PRE followed by another 12-week PRE plus rGH, while GHS patients underwent a 12-week PRE alone. Dynamic knee muscle strength was evaluated using an isokinetic dynamometer. Results Before PRE, there were significant differences between the groups regarding the results of flexor peak torque (FPT) normalized to body weight (BW-FPT) in the dominant (DO, p=0.008) and non-dominant (ND, p=0.01) limbs, and in the agonist/antagonist (A/A) ratio in the DO (p=0.02) and ND (p=0.006) limbs. After PRE in the GHD group, values of FPT and BW-FPT in both limbs increased significantly (p<0.001) and independently of rGH, while the A/A ratio value improved significantly (p<0.001) in the ND limb. Conclusions A short period of PRE alone was sufficient to improve parameters of muscle strength in young male adults with childhood-onset GHD.

Comportamento glicêmico após exercícios intermitentes em diabéticos tipo 1: Uma revisão sistemática / Glycemic behavior after intermittent exercises on type 1 diabetics: A systematic review

a presente revisão sistemática busca evidências sobre o efeito agudo da realização de exercícios intermitentes na resposta glicêmica de pessoas com diabetes tipo 1. Métodos: realizaram-se buscas nas bases de dados eletrônicas: Pubmed e Medline. Foram utilizados os seguintes descritores em português e Inglês: Intermittent exercises, interval exercises, intermittent high intensity e diabetes type 1. Foram encontrados 2166 artigos com os descritores mencionados, destes após processo de seleção ficaram 13 artigos para a leitura na integra aonde 06 foram excluídos, assim ao final 07 artigos contemplaram todos os critérios de inclusão e exclusão. O levantamento de dados restringiu-se a pesquisas realizadas com seres humanos de ambos os gêneros nos últimos 10 anos (2005 a 2015). Resultados: observou-se que com a prática de 20 a 60 minutos de exercícios com sprints máximos intermitentes ((variação entre 4 a 30 sprints, tempo de duração 4 a 15 segundos), intervalados com períodos de recuperação passivo ou recuperação ativa de intensidade moderada (40% VO²máx e 50% VO²pico), o que se pode esperar é uma queda glicêmica entre 36 + 14.4mg/dl a 90 + 9mg/dl com valores percentuais entre 18,18% a 54,05%. Conclusão: segundo os estudos analisados o exercício intermitente favorece a um menor risco de hipoglicemias agudas induzidas pelo exercício....(AU)

this current systematic review seeks evidence about the intermittent exercises practicing true effects on the glycemic response of people carrying type 1 diabetes. Methods: Researches were made on electronic databases: PubMed and Medline. The following descriptors were used in Portuguese and English: Intermittent exercises, interval exercises, intermittent high intensity and diabetes type 2166 articles were found with these previous descriptors, after an assortment process, there were 13 articles for full reading in which 06 articles was excluded, thus only 07 articles did fit in all the inclusion and exclusion criteria. The data survey was restricted to researching human beings of both genders in the last 10 years (2005-2015). Results: It was observed that 20-60 minutes practice of exercises with maximum intermittent sprints (about 4-30 sprints, 4-15 seconds duration), with interval periods of passive recovery or moderate intensity active recovery (40% and 50% VO²máx VO²pico), what can be expected is a glycemic decrease between 36 + 14.4mg/dl to 90 + 9 mg/dl and percentages from 18.18% to 54.05%. Conclusion: According to the studies analyzed, intermittent exercises favor a lower risk of acute hypoglycemia induced by exercises....(AU)

Influência do treinamento resistido na composição corporal, flexibilidade, capacidade aeróbia e no desenvolvimento de força de adolescentes em diferentes estágios maturacionais / IInfluence of resistant training in body composition, flexibility, aerobic capacity and development of adolescent strength in different maturational stages

O objetivo do estudo foi verificar a influência do treinamento de força na composição corporal, flexibilidade, capacidade aeróbia e no desenvolvimento de força de adolescentes praticantes da modalidade de handebol em nos diferentes estágios maturacionais. Amostra foi composta por 22 adolescentes (13 e 15 anos). Foram avaliadas à maturação sexual, massa corporal, estatura, índice de massa corporal (IMC), percentual de gordura (%G), circunferência da cintura e quadril (RCQ), flexibilidade e a capacidade aeróbia (VO2máx). A força muscular foi avaliada pelo teste de uma repetição máxima (1RM) dos membros superiores (Supino Reto) e inferiores (Leg Press 45°). A intervenção com treinamento resistido a 75% de 1RM foi realizada por 8 semanas. Para as análises se obteve a diferença (Δ) entre os dados iniciais e finais (pré vs. pós) das variáveis dependente para cada grupo e análise não paramétrica de Kruskall-Wallis. Foi realizado o post hoc de Sidak para corrigir o nível de significância das comparações múltiplas com nível de significância estipulado em p<0,05. Não foi encontrada diferenças nas variáveis antropométricas e composição corporal, observou-se diferenças significativas (p=0,001) para as variáveis, flexibilidade, VO2máx, força da musculatura de membros superiores (FMMS) e força da usculatura de membros inferiores (FMMI) quando analisado o grupo como um todo após intervenção. Entre os grupos maturacionais foram encontradas diferenças significativas (p=0,001) na flexibilidade e FMMII. O post hoc de Sidak indicou que na flexibilidade, as diferenças encontram-se entre o estágio maturacional 3 para o estágio maturacional 5 (p=0,02). Já na FMMII entre o estágio maturacional 4 para o estágio maturacional 1 (p=0,03), e entre o estágio maturacional 4 para o estágio maturacional 3 (p=0,04). Pode-se observar que, após a aplicação do treinamento de força, foi detectado diferenças significativas no VO2máx, FMMS e FMMI de atletas de handebol. Quando os resultados são dicotomizados pelo estágio puberal, melhoras significativas da flexibilidade e força são observadas, principalmente nos adolescentes nas fases pré e pós-púberes. ..(AU)

: The objective of the study was to verify the influence of strength training on body composition, flexibility, aerobic capacity and strength development of adolescents practicing handball in different maturational stages. The sample consisted of 22 adolescents (13 and 15 years old). It was evaluated the sexual maturation, body mass, height, body mass index (BMI), fat percentage (%BF), waist and hip circumference, flexibility and aerobic capacity (VO2max). Muscle strength was assessed by a maximal repetition test (1RM) of the upper limbs (Right Supine) and lower (Leg Press 45°). Intervention with resistance training at 75% of 1RM was performed for 8 weeks. For the analyzes, the difference (Δ) between the initial and final data (pre vs. post) of the dependent variables for each group and nonparametric Kruskall-Wallis analysis was obtained. The Sidak post hoc was performed to correct the level of significance of the multiple comparisons with a significance level set at p <0.05. No differences were found in the anthropometric variables and body composition. There were significant differences (p=0.001) for variables, flexibility, VO2max, upper limb musculature strength (FMMS) and lower limb musculature strength (FMMI) when analyzed The group as a whole after intervention. Among the maturational groups, significant differences (p=0.001) were found in flexibility and FMMII. Sidak's post hoc indicated that in flexibility, differences are found between the maturational stage 3 for the maturational stage 5 (p=0.02). In the FMMII between the maturational stage 4 for the maturational stage 1 (p=0.03), and between the maturational stage 4 for the maturational stage 3 (p=0.04). It can be observed that, after the application of strength training, significant differences were detected in VO2max, FMMS and FMMI of handball athletes. When the results are dichotomized by the pubertal stage, significant improvements in flexibility and strength are observed, especially in adolescents in the pre- and post-pubertal stages...(AU)

Metabolic risk and television time in adolescent females.

OBJECTIVES: A sedentary lifestyle is increasingly implicated in a negative metabolic health profile among youth. The present study examined relationships between clustered metabolic risk factors and TV viewing in female adolescents. METHODS: The sample comprised 262 girls 14-17 years. Height, weight, fasting glucose, insulin, HDL cholesterol, triglycerides, and blood pressure were measured. Body mass index (BMI) was calculated. TV viewing time and moderate-to-vigorous physical activity (MVPA) were estimated from a 3-day diary. Outcome variables were normalized and expressed as Z scores which were summed into a metabolic risk score. Multiple linear regression analysis was used. RESULTS: TV viewing was independently associated with increased prevalence of clustered metabolic risk in girls after adjustment for several confounders (i.e., chronological age, BMI, MVPA, and parental education). The final model also indicated that lower levels of MVPA, higher BMI, and lower mother education were associated with higher metabolic risk. CONCLUSIONS: Increased TV viewing had an adverse effect on metabolic health of adolescent girls. The findings highlight the potential importance of preventive actions to ameliorate metabolic risk in youth which target both sedentary and physically active behaviors.

Relationship between metabolic syndrome and moderate-to-vigorous physical activity in youth.

BACKGROUND: Associations of metabolic syndrome (MetS) with lifestyle behaviors in youth is potentially important for identifying subgroups at risk and encourage interventions. This study evaluates the associations among the clustering of metabolic risk factors and moderate-to-vigorous physical activity (MVPA) in youth. METHODS: The sample comprised 522 girls and 402 boys (N = 924) aged 11 to 17 years. Height, weight, waist circumference (WC), fasting glucose, high-density lipoprotein cholesterol, triglycerides, and blood pressures were measured. Cardiorespiratory fitness (CRF) was assessed using the 20-m shuttle run test. MVPA was estimated with a 3-day diary. Outcome variables were statistically normalized and expressed as z scores. A clustered metabolic risk score was computed as the mean of z scores. Multiple linear regression was used to test associations between metabolic risk and MVPA by sex, adjusted for age, WC, and CRF. RESULTS: After adjustment for potential confounders, MVPA was inversely associated with the clustering of metabolic risk factors in girls, but not in boys; in addition, after adjusting for WC, the statistical model of that relationship was substantially improved in girls. CONCLUSION: MVPA was independently associated with increased risk of MetS in girls. Additional efforts are needed to encourage research with different analytical approach and standardization of criteria for MetS in youth.

Independent association of clustered metabolic risk factors with cardiorespiratory fitness in youth aged 11-17 years.

BACKGROUND: Although the prevalence of metabolic syndrome (MetS) has increased in youth, the potential independent contribution of cardiorespiratory fitness (CRF) to the clustering of metabolic risk factors has received relatively little attention. AIM: This study evaluated associations between the clustering of metabolic risk factors and CRF in a sample of youth. SUBJECTS AND METHODS: Height, weight, BMI, fasting glucose, insulin, HDL-cholesterol, triglycerides and blood pressures were measured in a cross-sectional sample of 924 youth (402 males, 522 females) of 11-17 years. CRF was assessed using the 20-metre shuttle run test. Physical activity (PA) was measured with a 3-day diary. Outcome variables were statistically normalized and expressed as Z-scores. A MetS risk score was computed as the mean of the Z-scores. Multiple linear regression was used to test associations between CRF and metabolic risk, adjusted for age, sex, BMI, PA and parental education. RESULTS: CRF was inversely associated with MetS after adjustment for potential confounders. After adjusting for BMI, the relationship between CRF and metabolic risk has substantially improved. CONCLUSION: CRF was independently associated with the clustering of metabolic risk factors in youth of 11-17 years of age.

Variations in the vitamin D-binding protein (DBP) gene are related to lower 25-hydroxyvitamin D levels in healthy girls: a cross-sectional study.

BACKGROUND/AIMS: Vitamin D deficiency has been recognized as a worldwide epidemic affecting several pediatric and adolescent populations. We determined the genotype and haplotype distribution of the rs4588 and rs7041 polymorphisms of the GC gene encoding vitamin D-binding protein (DBP) and investigated the associations between these gene variants and their haplotypes with 25-hydroxyvitamin D [25(OH)D] levels in girls from South Brazil. METHODS: Cross-sectional study including 198 apparently healthy girls aged 10-18 years. Plasma levels of 25(OH)D were assessed by radioimmunoassay. Participants were genotyped for rs4588 and rs7041 by real-time PCR, with allelic discrimination assays. RESULTS: Mean chronological age and BMI percentile were 13.17 ± 1.74 years and 57.81 ± 29.03, respectively. Sufficient circulating 25(OH)D levels (≥30 ng/ml) were found in 9.1% of the overall group, insufficient levels (20-29.9 ng/ml) in 59.6%, and deficient levels (<20 ng/ml) in 31.3%. The AA genotype of rs4588, TT genotype of rs7041 and CT-AT/AT-AT (GC 1f-2/2-2) diplotypes were significantly associated with lower 25(OH)D levels, even after adjustment for age and season at the time of blood collection. CONCLUSIONS: The GC gene genotype may be related to the susceptibility to low 25(OH)D levels in female children and adolescents.

Vitamin D deficiency in girls from South Brazil: a cross-sectional study on prevalence and association with vitamin D receptor gene variants.

BACKGROUND: Vitamin D deficiency has been associated with a multitude of disorders including diabetes, defective insulin secretion as well as rickets and poor bone health. Vitamin D is also a concern during childhood and adolescence and has been reported in girls from South Brazil. We determined the prevalence of vitamin D deficiency in girls from South Brazil and investigated whether the genotypic distribution of the BsmI, ApaI and TaqI polymorphisms of the VDR gene and their haplotypes were associated with vitamin D levels. METHODS: Cross-sectional study including 234 apparently healthy girls aged 7 to 18 years. Height and weight were measured for calculation of body mass index (BMI) percentiles for age. Plasma levels of 25-hydroxyvitamin D [25(OH)D] were assessed. Participants were genotyped for ApaI (rs7975232), TaqI (rs731236), and BsmI (rs1544410) SNPs. RESULTS: The median and interquartile range (25-75%) of BMI percentile was 62.0 (33.3 - 84.9). The frequency of overweight/obesity was 24.9%. Circulating levels of 25(OH)D (≥ 30 ng/mL) were adequate in 9.4%; insufficient in 54.3% (20-29 ng/mL); and deficient in 36.3% (< 20 ng/mL). Genotype frequencies were GG = 47.0%, GA = 41.5%, and AA = 11.5% for BsmI; GG = 16.7%, GT = 52.6%, and TT = 30.8% for ApaI; TT = 46.2%, TC = 44.9% and CC = 9.0% for TaqI. Genotypes with no gene variance (ancestral wild genotype) of BsmI (GG vs. GA + AA, two-tailed Student's t-test p < 0.001), ApaI (GG vs. GT + TT, two-tailed Student's t-test p = 0.031) and TaqI (TT vs. TC + CC, two-tailed Student's t-test p = 0.005) SNPs and the GGT haplotype (two-tailed Student's t-test p = 0.036) were significantly associated with lower 25(OH)D levels. CONCLUSIONS: 25-hydroxyvitamin D deficiency and insufficiency were highly prevalent in this sample. The BsmI, ApaI and TaqI wild variants of the VDR gene, as well as the GGT haplotype, were associated with lower vitamin D levels, suggesting that VDR gene polymorphisms could be linked to higher susceptibility to vitamin D deficiency in a sub-population of children and adolescents.

Physical activity, cardiorespiratory fitness, and metabolic syndrome in adolescents: a cross-sectional study.

BACKGROUND: In adults, there is a substantial body of evidence that physical inactivity or low cardiorespiratory fitness levels are strongly associated with the development of metabolic syndrome. Although this association has been studied extensively in adults, little is known regarding this association in adolescents. The aim of this study was to analyze the association between physical activity and cardiorespiratory fitness levels with metabolic syndrome in Brazilian adolescents. METHODS: A random sample of 223 girls (mean age, 14.4 ± 1.6 years) and 233 boys (mean age, 14.6 ± 1.6 years) was selected for the study. The level of physical activity was determined by the Bouchard three-day physical activity record. Cardiorespiratory fitness was estimated by the Leger 20-meter shuttle run test. The metabolic syndrome components assessed included waist circumference, blood pressure, HDL-cholesterol, triglycerides, and fasting plasma glucose levels. Independent Student t-tests were used to assess gender differences. The associations between physical activity and cardiorespiratory fitness with the presence of metabolic syndrome were calculated using logistic regression models adjusted for age and gender. RESULTS: A high prevalence of metabolic syndrome was observed in inactive adolescents (males, 11.4%; females, 7.2%) and adolescents with low cardiorespiratory fitness levels (males, 13.9%; females, 8.6%). A significant relationship existed between metabolic syndrome and low cardiorespiratory fitness (OR, 3.0 [1.13-7.94]). CONCLUSION: The prevalence of metabolic syndrome is high among adolescents who are inactive and those with low cardiorespiratory fitness. Prevention strategies for metabolic syndrome should concentrate on enhancing fitness levels early in life.

Ponto de corte para o índice de massa corporal em adolescentes: comparação com padrões de referência nacionais e internacional / Cutoff for body mass index in adolescents: comparison with national and international reference standards

OBJETIVO: elaborar uma tabela percentílica para o índice de massa corporal (IMC) para adolescentes na faixa etária de 10 a 14 anos da cidade de Curitiba, Paraná, e comparar os valores encontrados para o sobrepeso (percentil 85) e obesidade (percentil 95) com referências de IMC nacional, regional e internacional. MÉTODO: estudo longitudinal misto com 5231 avaliações, 2471 em meninos e 2760 em meninas, idades entre 10 e 14 anos. Esse número foi obtido a partir de avaliações semestrais realizadas entre os anos de 1998 a 2002, gerando 4321 observações (estudo longitudinal), mais a avaliação de 910 indivíduos no ano de 2006 (estudo transversal). O IMC foi calculado pela razão entre a massa corporal (Kg) dividida pela estatura (m) ao quadrado. Foram elaboradas tabelas de frequência baseadas na distribuição percentílica. Para identificar as diferenças nos pontos de corte para sobrepeso e obesidade com os estudos nacionais de Cintra e de Conde e Monteiro e com o estudo internacional de Cole foi utilizado teste binomial não paramétrico. RESULTADOS: comparando com as referências, os jovens de Curitiba seriam superestimados com sobrepeso se utilizadas a referência de Conde e a de Cole e subestimados na referência regional de Cintra. As mesmas tendências foram observadas com relação ao percentil 95 (obesidade), porém não para todas as faixas etárias. CONCLUSÃO: observamos diferenças nos valores de IMC sugeridos como pontos de corte para sobrepeso e obesidade em relação às referências nacionais e internacionais reforçando a necessidade de utilização de referências específicas para cada população.

Ponto de corte para o índice de massa corporal em adolescentes: comparação com padrões de referência nacionais e internacional / Cutoff for body mass index in adolescents: comparison with national and international reference standards

OBJETIVO: elaborar uma tabela percentílica para o índice de massa corporal (IMC) para adolescentes na faixa etária de 10 a 14 anos da cidade de Curitiba, Paraná, e comparar os valores encontrados para o sobrepeso (percentil 85) e obesidade (percentil 95) com referências de IMC nacional, regional e internacional. MÉTODO: estudo longitudinal misto com 5231 avaliações, 2471 em meninos e 2760 em meninas, idades entre 10 e 14 anos. Esse número foi obtido a partir de avaliações semestrais realizadas entre os anos de 1998 a 2002, gerando 4321 observações (estudo longitudinal), mais a avaliação de 910 indivíduos no ano de 2006 (estudo transversal). O IMC foi calculado pela razão entre a massa corporal (Kg) dividida pela estatura (m) ao quadrado. Foram elaboradas tabelas de frequência baseadas na distribuição percentílica. Para identificar as diferenças nos pontos de corte para sobrepeso e obesidade com os estudos nacionais de Cintra e de Conde e Monteiro e com o estudo internacional de Cole foi utilizado teste binomial não paramétrico. RESULTADOS: comparando com as referências, os jovens de Curitiba seriam superestimados com sobrepeso se utilizadas a referência de Conde e a de Cole e subestimados na referência regional de Cintra. As mesmas tendências foram observadas com relação ao percentil 95 (obesidade), porém não para todas as faixas etárias. CONCLUSÃO: observamos diferenças nos valores de IMC sugeridos como pontos de corte para sobrepeso e obesidade em relação às referências nacionais e internacionais reforçando a necessidade de utilização de referências específicas para cada população.(AU)

[Atherosclerotic risk factors associated with cardiorespiratory fitness and BMI in adolescents]. / Fatores de risco para aterosclerose associados à aptidão cardiorrespiratória e ao IMC em adolescentes.

Previous research has demonstrated high prevalence of atherosclerotic risk factors in adolescents; however, the associate factors related to its onset are unclear. Therefore, the objective of this study was to relate inadequate blood pressure levels, total cholesterol (TC), HDL-C, LDL-C and triglycerides (TG) with different VO2máx and BMI levels in a sample of 249 adolescents, aged between 12 to 16 years old. For VO2máx prediction, the 20 meters test was used. The BMI was calculated using the body mass/heigh(2) equation. The considerate inadequate levels were: blood pressure > or =90th percentile; total cholesterol > or =150 mg/dL; LDL-C > or = 100 mg/dL, TG > or =100 mg/dL and HDL-C <45 mg/dL. Logistic regression was used as statistical procedures, with p<0.05. For the boys, significant associations were observed between the low VO2máx with TC (OR 4.33; IC=1.23-15.20) and TG (OR=4.88; IC=1.15-20.79) and between overweight and TG (OR=4.33; IC=1.42-13.21). After BMI correction, the males subjects with low VO2máx maintained their significant associations with TC (OR=5.73; IC=1.52-21.58) and TG (OR=3.81; IC=1.86-16.94). The evidences in this study suggested an inverse relationship of the cardiorespiratory fitness with TC and TG for boys, independently of the BMI.

Fatores de risco para aterosclerose associados à aptidão cardiorrespiratória e ao IMC em adolescentes / Atherosclerotic risk factors associated with cardiorespiratory fitness and BMI in adolescents

Pesquisas prévias têm demonstrado alta prevalência de fatores de risco para aterosclerose em adolescentes, no entanto, os fatores associados a seu surgimento ainda não estão totalmente esclarecidos. Portanto, este estudo teve como objetivo relacionar níveis inadequados de pressão arterial, colesterol total (CT), HDL-C, LDL-C e triglicérides (TG) com diferentes índices de VO2máx e índice de massa corporal (IMC) em 249 adolescentes com idades entre 12 a 16 anos. Para predição do VO2máx foi utilizado o teste de vai-e-vem de 20 metros. O IMC foi calculado por meio da equação: massa corporal/estatura². Os níveis considerados inadequados foram: pressão arterial > percentil 90º; CT > 150 mg/dL; LDL-C > 100 mg/dL; TG > 100 mg/dL; e HDL-C < 45 mg/dL. Na análise estatística foi empregada a regressão logística, com p < 0,05. Foram encontradas associações significativas para o sexo masculino de baixo VO2máx com o CT (OR 4,33; IC = 1,23-15,20) e o TG (OR = 4,88; IC = 1,15-20,79) e do sobrepeso com TG (OR = 4,33; IC = 1,42-13,21). Após correção pelo IMC, os rapazes com baixos índices de VO2máx mantiveram as associações significativas com o CT (OR = 5,73; IC = 1,52-21,58) e TG (OR = 3,81; IC = 1,86-16,94). As evidências apresentadas neste estudo sugerem que, independentemente do IMC, existe relação inversa da aptidão cardiorrespiratória com o CT e o TG para os rapazes.

Previous research has demonstrated high prevalence of atherosclerotic risk factors in adolescents; however, the associate factors related to its onset are unclear. Therefore, the objective of this study was to relate inadequate blood pressure levels, total cholesterol (TC), HDL-C, LDL-C and triglycerides (TG) with different VO2máx and BMI levels in a sample of 249 adolescents, aged between 12 to 16 years old. For VO2máx prediction, the 20 meters test was used. The BMI was calculated using the body mass/heigh² equation. The considerate inadequate levels were: blood pressure > 90th percentile; total cholesterol > 150 mg/dL; LDL-C > 100 mg/dL, TG > 100 mg/dL and HDL-C <45 mg/dL. Logistic regression was used as statistical procedures, with p<0.05. For the boys, significant associations were observed between the low VO2máx with TC (OR 4.33; IC=1.23-15.20) and TG (OR=4.88; IC=1.15-20.79) and between overweight and TG (OR=4.33; IC=1.42-13.21). After BMI correction, the males subjects with low VO2máx maintained their significant associations with TC (OR=5.73; IC=1.52-21.58) and TG (OR=3.81; IC=1.86-16.94). The evidences in this study suggested an inverse relationship of the cardiorespiratory fitness with TC and TG for boys, independently of the BMI.