Resumo
A alimentação rápida demonstrou aumentar o risco de excesso de peso em crianças e adultos. Os objetivos do presente estudo foram investigar a correlação entre a taxa de mastigação e o número de mastigações por bocado e avaliar se elas estavam associadas ao peso da ingestão de refeições. Trinta indivíduos saudáveis, com idades entre 18 e 24 anos, fizeram um almoço de teste em sua velocidade habitual até sentirem-se saciados. As atividades dos músculos masseter e supra-hióideo foram registradas para determinar o número de mastigações e o momento da deglutição. O peso da ingestão de refeições foi registrado juntamente com o índice de massa corporal (IMC), taxa de mastigação, número de mastigações por bocado, duração da refeição, taxa de ingestão, fome e níveis de preferência alimentar. O peso médio (± DP) da ingestão de refeições, taxa de mastigação e número de mastigações por bocado foram 261,4 ± 78,9 g, 94,4 ± 13,5 mastigações mín.-1 , 19,2 ± 6,4 mastiga por bocado, respectivamente. A taxa de mastigação não se correlacionou com o número de mastigações por bocado. A regressão linear multivariável mostrou que a ingestão de refeições foi significativamente associada positivamente à taxa de mastigação, duração da refeição e IMC, mas inversamente associada ao número de mastigações por bocado ( R 2 ajustado = 0,42). Concluiu-se que o número de mastigações não estava associado à taxa de mastigação, mas a ingestão de refeições foi explicada tanto pelo número reduzido de mastigações quanto pelo aumento da taxa de mastigação.
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