The Effect High Protein-Fiber Diet With Exercise on Acylated Ghrelin and Leptin in Obese Adolescents

Obesity has been reported to impair regulation of appetite and lead uncontrollably hunger and satiety response. Ghrelin is orexigenic hormone from the stomach meanwhile, leptin is anorexigenic from adipose. Interestingly, obesity is associated with acylated ghrelin and leptin resistance. Study about the impact of high protein and fiber with combined exercise (HPFE) to suppress hunger among young obese still unclear. The hypothesis was that high protein-fiber would result in decreased in acylated ghrelin and leptin in HPFE group. Thus, the investigator examined the effect of an 8 weeks HPFE on acylated ghrelin and leptin. Subjects were randomized into four groups: High Protein-Fiber (HPF; n=15). High Protein-Fiber and exercise (HPFE; n=15), Exercise (E; n=15) and control (C; n=15). The diet prescribed 1200 kcal/day, based on basic energy requirement minus 300kcal, consisted high protein (25%) and fiber (30g/day). The exercise is combination aerobic and resistance training, with target 75% heart rate maximum. Plasma acylated ghrelin and leptin were analyzed with enzyme immunoassay.