The aim of this study was to investigate the association between cardiac parasympathetic activity and cardiorespiratory fitness, insulin, and hemodynamic profile in overweight and obese adolescent girls and boys (aged 12-16 years). Data were taken from the Multidisciplinary Obesity Treatment Program. Only post-intervention measurements are presented herein. Body composition, cardiorespiratory fitness, blood pressure, and metabolic profile (insulin and glucose profile) of adolescents were assessed. Cardiac parasympathetic activity was determined by resting heart rate variability, which was analyzed using a heart rate monitor. Greater parasympathetic cardiac activity was associated with higher levels of cardiorespiratory fitness in both girls and boys (0.375 ≤ r ≤ 0.900), while the sympathetic-vagal balance was negatively related to maximal oxygen uptake (VO2max) in girls (r = 0.478). An association between lower parasympathetic activity and insulin resistance was noted in girls (mean of R-R intervals [RRmean] and homeostasis model assessment insulin-resistance index [HOMA-IR]: r = -0.678), while greater systolic blood pressure (SBP) and lower parasympathetic activity were associated in both sexes (RRmean and SBP: r = -0.526; high frequency [HF (nu)] and SBP: r = -0.754). In conclusion, autonomic nervous system activity was associated with cardiorespiratory fitness, insulin resistance, and SBP in overweight and obese adolescents. The identification of these potential relationships assists with the establishment of future long-term exercise interventions that evaluate the improvements in parasympathetic nervous system activity, in addition to metabolic profile and cardiorespiratory fitness in overweight and obese adolescents.

Intervenção multiprofi ssional melhora a aptidão física IntroduçãoIntervenção multiprofi ssional melhora a aptidão física relacionada à saúde de adolescentes com maior efeito sobre as meninas em comparação aos meninos CDD. 20.ed. 613.398 613 ResumoEste estudo teve como objetivo verifi car as diferenças entre as respostas de meninos e meninas a um programa multiprofi ssional de tratamento da obesidade sobre a aptidão física relacionada à saúde.Fizeram parte do estudo 163 adolescentes com excesso de massa corporal e idade entre 10 e 18 anos. Foram avaliados parâmetros antropométricos, composição corporal, fl exibilidade, força e resistência abdominal e aptidão cardiorrespiratória antes e após 16 semanas de intervenção multiprofi ssional. A intervenção multiprofi ssional contou com a participação de profi ssionais de educação física, nutrição, psicologia e pediatria e teve como foco principal o incentivo a mudanças nos hábitos alimentares e de atividade física que pudessem promover alterações positivas nos parâmetros analisados. A intervenção teve frequência semanal de três sessões, sendo uma hora de intervenções teóricas com os profi ssionais de educação física, nutrição e psicologia e a outra hora destinada à prática regular de exercícios físicos, com predominância de exercícios físicos resistidos, aeróbios e prática de basquetebol. Após a intervenção tanto as meninas quanto os meninos apresentaram melhoras signifi cativas nas variáveis IMC, circunferência de cintura e quadril, massa gorda relativa e absoluta, massa magra, fl exibilidade, força/resistência abdominal e aptidão cardiorrespiratória, porém com resultados mais expressivos para as meninas sobre a circunferência de cintura, gordura corporal (kg), VO 2max e força/resistência abdominal.PALAVRAS-CHAVE: Adolescente; Obesidade; Aptidão física; Estudos de intervenção.Nas últimas décadas, a obesidade tem se apresentado como uma epidemia global na população jovem, sendo considerada uma importante preocupação em saúde pública devido, principalmente, às comorbidades associadas. Esta doença geralmente está associada à redução dos níveis de aptidão física relacionada à saúde (AFRS), dentre eles da aptidão cardiorrespiratória, que por sua vez pode contribuir para o aumento do risco de doenças cardiometabólicas [1][2][3] .Desse modo, estratégias de tratamento são recomendadas assim que identi cado o excesso de gordura corporal, buscando aumentar os níveis de AFRS das crianças e adolescentes, a m de evitar complicações decorrentes do excesso de gordura corporal [4][5][6][7] . O aumento dos níveis de aptidão cardiorrespiratória proporciona melhora no estado metabólico de jovens obesos 8 , exercendo um papel cardioprotetor [3][4] .Intervenções para crianças e adolescentes com excesso de gordura corporal, focadas em mudança do estilo de vida têm apresentado resultados signi cativos na AFRS 9-10 , principalmente em relação à melhora na aptidão cardiorrespiratória [11][12][13][14] . Apesar dos resultados positivos observados sobre a AFRS 9 , a partir do que se foi levan...

This criterion may serve as a complementary tool that can be employed to monitor the response to this model of multidisciplinary intervention. What is Known: • The effectiveness of multidisciplinary obesity interventions is usually determined by comparing changes in selected outcomes in the intervention versus versus control group. • There is no consensus about what should be assessed before and after the intervention program, which makes difficult to compare different programs and to determine their rate of responsiveness. What is New: • This study proposes a response criteria to pediatric obesity interventions following a similar model compared to ours based on key variables that presents low cost and high applicability in different settings.

OBJECTIVE: To compare body composition, hemodynamic parameters, health-related physical fitness, and health-related quality of life of adolescents with anthropometric diagnosis of overweight, obesity, and severe obesity. METHODS: 220 adolescents with excess body weight were enrolled. They were beginners in a intervention program that included patients based on age, availability, presence of excess body weight, place of residence, and agreement to participate in the study. This study collected anthropometric and hemodynamic variables, health-related physical fitness, and health-related quality of life of the adolescents. To compare the three groups according to nutritional status, parametric and non-parametric tests were applied. Significance level was set at p<0.05. RESULTS: There was no significant difference in resting heart rate, health-related physical fitness, relative body fat, absolute and relative lean mass, and health-related quality of life between overweight, obese, and severely obese adolescents (p>0.05). Body weight, body mass index, waist and hip circumference, and systolic blood pressure increased as degree of excess weightincreased (p<0.05). Dyastolic blood pressure of the severe obesity group was higher than the other groups (p<0.05). There was an association between the degree of excess weight and the prevalence of altered blood pressure (overweight: 12.1%; obesity: 28.1%; severe obesity: 45.5%; p<0.001). The results were similar when genders were analyzed separately. CONCLUSION: Results suggest that overweight adolescents presented similar results compared to obese and severely obese adolescents in most of the parameters analyzed.

No abstract