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We studied the effects of a food supplement made from bovine colostrum
on maximal oxygen uptake and flight times in jump tests in 10 young
athletes, seven females and three males, in a double blind cross-over
design. Defatted and decaseinated bovine colostrum (400 ml daily) or
placebo were administered for 12 days and maximal ergospirometer and
jump tests were performed on days 11 and 12. In the placebo group the
maximal oxygen uptake on day 12 was 7 % smaller than on day 11, whereas
in the colostrum group it did not change. Similarly, in the placebo
group the mean flight time in the counter movement jump was 9 ms and
in the squat jump 0 ms shorter on day 12 than on day 11. In the colostrum
group the flight time in the counter movement group was 4 ms and in
the squat jump 10 ms longer on day 12 than on day 11. Thus colostrum
improved significantly the oxygen uptake (p<0.01) and the flight
times (p<0.05) in the maximal ergometer and jump tests performed
a day apart. There were no significant changes in the serum concentrations
of IGF-1, growth hormone, testosterone, total LDL or HDL cholesterol,
ALAT, ASAT, creatine kinase, carboanhydrase III, myoglobin, interleukin-6
or blood cells measured on day 12 between the placebo and colostrum
groups.
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