title: Effects of bovine colostrum supplementation on serum IGF-I, IgG, hormone, and saliva IgA during training.
abstract: The purpose of this study was to examine the effects of bovine colostrum supplementation (Bioenervi) on serum insulin-like growth factor I (IGF-I), immunoglobulin G, hormone, and amino acid and saliva immunoglobulin A concentrations during a strength and speed training period. Nine male sprinters and jumpers underwent three randomized experimental training treatments of 8 days separated by 13 days. The only difference in the treatments was the drink of 125 ml consumed per day. Posttraining increases were noticed for serum IGF-I in the 25-ml Bioenervi treatment (125 ml contained 25 ml Bioenervi) and especially in the 125-ml Bioenervi treatment (125 ml contained 125 ml Bioenervi) compared with the placebo (normal milk whey) treatment (P < 0.05). The change in IGF-I concentration during the 8-day periods correlated positively with the change in insulin concentration during the same periods with 25-ml Bioenervi treatment (r = 0.68; P = 0.045) and with 125-ml Bioenervi treatment (r = 0.69; P = 0.038). Serum immunoglobulin G, hormone, and amino acid and saliva immunoglobulin A responses were similar during the three treatments. It appears that a bovine colostrum supplement (Bioenervi) may increase serum IGF-I concentration in athletes during strength and speed training.
authors.affiliation: Department of Biology of Physical Activity, University of Jyväskylä, 40351 Jyväskylä, Finland.
authors.forename: A
authors.initials: A
authors.lastname: Mero
authors.forename: H
authors.initials: H
authors.lastname: Miikkulainen
authors.forename: J
authors.initials: J
authors.lastname: Riski
authors.forename: R
authors.initials: R
authors.lastname: Pakkanen
authors.forename: J
authors.initials: J
authors.lastname: Aalto
authors.forename: T
authors.initials: T
authors.lastname: Takala
mesh_terms: D000328:Adult; D000818:Animals; D002417:Cattle; D003126:Colostrum / Q000502:physiology*; D018592:Cross-Over Studies; D004311:Double-Blind Method; D006728:Hormones / Q000097:blood*; D006801:Humans; D007070:Immunoglobulin A / Q000378:metabolism*; D007074:Immunoglobulin G / Q000378:metabolism*; D007334:Insulin-Like Growth Factor I / Q000378:metabolism*; D008297:Male; D009747:Nutritional Physiological Phenomena; D010809:Physical Fitness / Q000502:physiology*; D012463:Saliva / Q000378:metabolism; D014142:Track and Field
chemical_list: D006728:Hormones; D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007334:Insulin-Like Growth Factor I