title: A single circuit-resistance exercise has no effect on plasma obestatin levels in female college students.
abstract: Obestatin is a 23 amino acid peptide recently isolated from rat stomach that is encoded by the same gene as ghrelin. Obestatin has opposite action to ghrelin on food intake and plays a role in energy balance. The purpose of the present study was to investigate the effect of a circuit-resistance exercise (9 exercises, 25s per exercise, at 40, 60, 80% of 1RM) at different intensities on plasma obestatin and growth hormone (GH). Twenty volunteer females were randomly divided into four; 40, 60, 80%, combined (40+80+80%) loads groups (COL). Blood samples were collected before and immediately following the exercise protocol. Changes in plasma obestatin levels were not significant within and between groups. Plasma GH concentrations were significantly higher in high and COL groups, respectively. The data indicate that although circuit-resistance exercise resulted in a significant change in GH levels, it had no effect on plasma obestatin levels.
authors.affiliation: Department of Physical Education & Sports Sciences, Faculty of Humanity, Tarbiat Modares University (TMU), Tehran, Iran. ghanbara@yahoo.ca
authors.forename: Abbass
authors.initials: A
authors.lastname: Ghanbari-Niaki
authors.forename: Marziyeh
authors.initials: M
authors.lastname: Saghebjoo
authors.forename: Fatemeh
authors.initials: F
authors.lastname: Rahbarizadeh
authors.forename: Mehdi
authors.initials: M
authors.lastname: Hedayati
authors.forename: Hamid
authors.initials: H
authors.lastname: Rajabi
mesh_terms: D000328:Adult; D004797:Enzyme-Linked Immunosorbent Assay; D015444:Exercise / Q000502:physiology*; D005260:Female; D054439:Ghrelin / Q000097:blood*; D019382:Human Growth Hormone / Q000097:blood; D006801:Humans; D013334:Students; D014495:Universities
chemical_list: D054439:Ghrelin; D019382:Human Growth Hormone