ผลของการจำกัดอาหาร ต่อความเข้มข้นของฮอร์โมนเปปไทด์วายวายในกลุ่มที่ออกกำลังกายไม่เป็นประจำและกลุ่มที่ออกกำลังกายเป็นประจำ

Abstract

Purpose: To investigate the effect of 50 percent food restriction on circulating level of peptideYY hormone concentrations in sedentary and active males.Methods: Twenty active (n=10) and sedentary (n=10) males age between 18-22 yearsparticipated in this study which had been approved by local ethic committees. Maximum oxygenconsumption, resting heart rate, percent fat, percent fat free mass, body density, resting metabolic ratebetween sedentary and active groups were difference. Participants reduced 50 percent of their dailyfood intake (Food restriction) and maintained their normal food intake (Control) for three days. Eachtrial separated by at least two weeks. Participants were also asked to maintain their normal physicalactivity in two trials. Fasting peptide YY hormone concentrations were analysis before and following intwo groups. Body weight, subjective feeling of hunger as well as rating of perceived exertion weremeasured at the same period of time.Results: Peptide YY hormone concentrations (Control: 150±33 pg/ml; Food restriction:128±31 pg/ml, P= 0.05) and body weight (Control: 66.5±5.1 kg; Food restriction: 65.6±5.5 kg, P< 0.01)decreased significantly following three days of food restriction in active participants. There was nochange in subjective feeling of hunger and as well as rating of perceived exertion in sedentary andactive participants.Conclusion: Reduction in 50 percent of normal daily food intake induced decreased incirculating level of peptide YY hormone and body weight in active males but there was no