title: Resistin, visfatin and insulin sensitivity in selected phases of annual training cycle of triathletes.
abstract: The purpose of the study was to examine the effects of sport training on carbohydrate metabolic indices and adipokines concentrations in young male triathletes (n=10). Athletes performed the incremental running test in two periods of the training cycle: in the transitory and preparatory phases. In both analyzed terms, physical exercise was reflected by a significant increase in lactate (p≤0.01), insulin (p≤0.01), visfatin concentrations (p≤0.01, p<0.05, respectively) and only during transitory phase in glucose (p≤0.01) and resistin concentrations (p<0.05). Significant inter-period differences were noted in the pre-exercise insulin (p≤0.01) and also in pre- and post-exercise visfatin concentrations (p<0.05). Additionally, the differences (Δ) between post- and pre-exercise values of glucose (p<0.05) and visfatin (p≤0.01) significantly decreased in the preparatory phase comparing to the transitory phase. The inverse correlations between pre-exercise concentrations of visfatin and peak oxygen uptake (p<0.05) in the transitory phase and between post- and pre-exercise differences (Δ) of visfatin and lactate concentrations (p<0.05) in the preparatory phase were noted. During preparatory phase, pre-exercise visfatin concentrations inversely correlated with pre-exercise resistin, insulin and glucose levels (p<0.05). In conclusion, systematic training in elite triathletes modulates basal adipokine concentrations only to a small extent, however, influences on these molecules response on the acute exercise.
authors.affiliation: University School of Physical Education Department of Hygiene Poznan Poland. sliwicka@awf.pozan.pl
authors.forename: Ewa
authors.initials: E
authors.lastname: Sliwicka
authors.forename: L
authors.initials: L
authors.lastname: Pilaczyńska-Szcześniak
authors.forename: A
authors.initials: A
authors.lastname: Nowak
authors.forename: J
authors.initials: J
authors.lastname: Zieliński
mesh_terms: D000293:Adolescent; D054874:Athletic Performance / Q000502:physiology*; D001642:Bicycling / Q000502:physiology; D001786:Blood Glucose / Q000378:metabolism; D016207:Cytokines / Q000097:blood*; D006706:Homeostasis / Q000502:physiology; D006801:Humans; D007328:Insulin / Q000097:blood*; D007333:Insulin Resistance / Q000502:physiology*; D019344:Lactic Acid / Q000097:blood; D054409:Nicotinamide Phosphoribosyltransferase / Q000097:blood*; D010809:Physical Fitness / Q000502:physiology*; D052243:Resistin / Q000097:blood*; D012420:Running / Q000502:physiology; D013550:Swimming / Q000502:physiology; D055815:Young Adult
chemical_list: D001786:Blood Glucose; D016207:Cytokines; D007328:Insulin; C499624:RETN protein, human; D052243:Resistin; D019344:Lactic Acid; D054409:Nicotinamide Phosphoribosyltransferase; C085455:nicotinamide phosphoribosyltransferase, human