Effect of concurrent training on risk factors and hepatic steatosis in obese adolescents

Abstract

OBJECTIVE To analyze the effects of a 20-week concurrent training on the variables of body composition, lipid profile, and fatty liver diagnosis in obese adolescents. METHODS An open clinical trial was carried out with 34 obese adolescents aged between 12 and 15 years. Total body fat, trunk fat mass, total cholesterol and its fractions (HDL, LDL and VLDL), and triglycerides were analyzed; an upper abdominal ultrasound was performed in order to diagnose fatty liver. The participants underwent concurrent training (association of weight training with aerobic training) three times per week, lasting one hour for 20 weeks. Statistical analysis included paired Studentâ€(tm)s t-test and frequency analysis in order to verify the relative and absolute reductions of fatty liver diagnosis, being significant p<0.05. RESULTS The studied adolescents showed statistically significant improvement in body composition, with a decrease of total body fat percentage, total fat mass, trunk fat, and an a increase in the lean body mass. They also presented reduced size of liver lobes, decrease in total cholesterol and in LDL-cholesterol, with a lower prevalence of fatty liver. CONCLUSIONS The concurrent training was effective for promoting significant improvements in body fat composition and lipid profile variables, besides reducing fatty liver prevalence rate.

Concurrent aerobic plus resistance exercise versus aerobic exercise alone to improve health outcomes in paediatric obesity: a systematic review and meta-analysis

“…Also, our subgroup analysis revealed that long-term concurrent exercise programmes generate larger improvements in LDL cholesterol (as well as in total cholesterol). These findings suggest that this population requires longer concurrent exercise interventions for significant changes to occur in lipid variables45 in comparison with shorter, AT-only interventions. Interestingly, AT was more efficient in reducing TG levels than concurrent exercise during longer interventions.…”

Effects of order and sequence of resistance and endurance training on body fat in elementary school-aged girls

“…Excess adiposity is one of the main risk factors for the development of several metabolic disorders [ 20 , 21 ]. In addition, the reduction of body fat with non-pharmacological interventions is the most accepted method for the majority of the population, including the paediatric one [ 22 ]. These interventions have been the focus of several studies that aimed to identify which training models are more effective in the prevention and treatment of excess adiposity and related diseases [ 22 ].…”

Efeito de dois modelos de treinamento físico na composição corporal, variáveis metabólicas e hepáticas de jovens obesos

“…A prevalência da EHNA foi mais elevada no presente estudo, em comparação aos achados da literatura (PADILHA et al, 2010). Salienta-se por sua vez a dificuldade de discutir tais achados em virtude da escassez de estudos no qual aplicaram o treinamento concorrente (ANTUNES et al, 2013) ou treinamento funcional a fim de analisar possíveis alterações na EHNA em adolescentes obesos.…”

“…Sabe-se que a gordura intra-abdominal é um importante fator de risco para o desenvolvimento da EHNA, uma vez que este tecido adiposo é mais metabolicamente ativo do que o tecido adiposo subcutâneo, fato que pode acarretar severas complicações metabólicas e funcionais aos órgãos-alvo (ANTUNES et al, 2013). Porém, frente às limitações da presente investigação, outros estudos são necessários a fim de investigar a eficácia do treinamento concorrente e do treinamento funcional nesta variável em potencial.…”