Implications of consumption of protein and practice of physical activity in lean body mass of women exposed to gastric bypass/IMPLICACOES DO CONSUMO DE PROTEINA E DA PRATICA DE ATIVIDADE FISICA NA MASSA CORPORAL MAGRA DE MULHERES SUBMETIDAS AO BYPASS GASTRICO

Objective: To evaluate the implications of protein intake and physical activity on lean body mass in women undergoing gastric bypass after 1 year. Materials and Methods: It was included 30 women in postoperative gastric bypass period [greater than or equal to] 1 year. Anthropometric measurements and body composition by bioelectrical impedance analysis were performed; assessment of protein intake by FFQ (Food Frequency Questionnaire) and supplementation; and physical activity, and the parameters were compared with the recommendations of the American Association of Clinical Endocrinologists. Results: The average height excess loss found was 68.8 [+ or -] 19.4%. As for protein intake, it was noted that only through diet, this intake was below the recommendations that 60g/day, and appropriate values were achieved when added to supplementation (73.9 [+ or -] 23.9g/day). The average physical activity was 135 [+ or -] 161.4 minutes weekly. When combined, it was noted that adequate protein intake positively influenced the percentage of lean body mass (69.1 [+ or -] 5.1% vs 65.7 [+ or -] 6.1%) and %EWL (69.7 [+ or -] 15.7% vs 67.2 [+ or -] 25.4%) as well as the proper practice of physical activity (69.0 [+ or -] 4.8% vs 66.9 [+ or -] 6.2%). Conclusion: Adequate protein intake and regular physical activity appear to be beneficial in the preservation of lean body mass after bariatric individuals. Key words: Bariatric surgery. Protein intake. Physical exercise. Body composition. Objetivo: Avaliar as implicacoes do consumo de proteina e pratica de atividade fisica na massa corporal magra de mulheres submetidas ao bypass gastrico (BG) apos 1 ano. Materiais e Metodos: Foram incluidas 30 mulheres em pos-operatorio de BG de periodo [greater than or equal to] 1 ano. Foram realizadas avaliacao antropometrica e da composicao corporal atraves da bioimpedancia eletrica; avaliacao do consumo proteico atraves de questionario de frequencia alimentar e suplementacao; e pratica de atividade fisica, sendo os parameteros comparados com as recomendacoes da American Association of Clinical Endocrinologists. Resultados: A media da perda do excesso de peso encontrada foi de 68,8 [+ or -] 19,4%. Quanto ao consumo proteico, notou-se que somente atraves da alimentacao, a ingestao estava aquem das recomendacoes de 60g/dia, sendo que valores adequados foram atingidos quando somados a suplementacao (73,9 [+ or -] 23,9g/dia). A media da pratica de atividade fisica foi de 135 [+ or -] 161,4 minut