Year: 2008
Type: dissertation
Abstract: Aerobic and resistance exercise have been promoted as a key component of exercise\nrecommendations for weight control because exercise is an effective method of increasing\nenergy expenditure and it may paradoxically, lead to a short-term hunger suppression. This\nphenomenon has been termed 'exercise induced anorexia' but the mechanisms are unclear so\nthe relationship between exercise and hunger has led to a need for investigators to study the\nrole of gut hormones in mediating exercise-induced hunger changes. The effect of acute\nexercise bouts on total plasma ghrelin concentrations is controversial and no studies have\nreported the effects of exercise on acylated ghrelin. There is also a paucity of data on the\neffects of exercise on total PYY.\nSeveral limitations are apparent in the research literature regarding exercise and gut\nhormones. Most studies have measured gut hormone responses for relatively short periods\nand few studies have assessed post-exercise gut hormone responses to feeding over a\nprolonged period or attempted to relate these responses to changes in hunger. Moreover, no\nstudies have examined acylated ghrelin and PYY responses to resistance exercise. Therefore\nthe purpose of the studies presented in this thesis is to investigate the acute effects of exercise\non hunger and acylated ghrelin and the final study measured total PYY in healthy fasted\nparticipants to try and explain the mechanisms for 'exercise induced anorexia'. [Continues.]
Author: David Broom
Language: English
Subfield: Endocrine and Autonomic Systems
Field: Neuroscience
Domain: Life Sciences
Open Access status: green
OpenAlex ID: W2886475991