Journal of Applied Physiology
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J Appl Physiol 83: 1144-1151, 1997;
8750-7587/97 $5.00
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Journal of Applied Physiology
Vol. 83, No. 4, pp. 1144-1151, October 1997
EXERCISE AND MUSCLE

Effects of bovine colostrum supplementation on serum IGF-I, IgG, hormone, and saliva IgA during training

Antti Mero1, Heidi Miikkulainen1, Jarmo Riski1, Raimo Pakkanen2, Jouni Aalto2, and Timo Takala1

1 Department of Biology of Physical Activity, University of Jyväskylä, 40351 Jyväskylä; and 2 Viable Bioproducts, Turku Technology Center, Biocity, 20520 Turku, Finland

Received 3 May 1996; accepted in final form 6 June 1997.

Mero, Antti, Heidi Miikkulainen, Jarmo Riski, Raimo Pakkanen, Jouni Aalto, and Timo Takala. Effects of bovine colostrum supplementation on serum IGF-I, IgG, hormone, and saliva IgA during training. J. Appl. Physiol. 83(4): 1144-1151, 1997.---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.

insulin-like growth factor I; immungolobulin G and immunoglobulin A concentrations

0161-7567/97 $5.00 Copyright © 1997 the American Physiological Society




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