In:
Canadian Journal of Applied Physiology, Canadian Science Publishing, Vol. 25, No. 2 ( 2000-04-01), p. 127-138
Abstract:
This investigation examines the effects of orally induced alkalosis on serum IGF-1 and IGFBP3 concentrations in response to an acute 90-s bout of high intensity cycle exercise. Ten healthy, active men, ages 24.60 ± 4.90 years, participated in a randomized, doubleblind, counterbalanced trial order with a cross-over design. Subjects ingested an experimental bicarbonate solution or a placebo solution. Blood was sampled at baseline; pre-exercise: and 0, 5, 10, and 30 min postexercise. The pH between groups for pre-exercise and postexercise time points differed significantly (p 〈 .05) in the experimental condition (from 7.42 ± 0.01 to 7.35 ± 0.02) versus the placebo condition (from 7.36 ± 0.01 to 7.25 ± 0.03). Increases in IGF-1 over resting conditions occurred with placebo conditions at 5 and 10 min postexercise and in the experimental condition at 5 min postexercise. Concentrations of IGFBP3 were elevated above baseline at IP in both experimental and placebo conditions. Key Words: hormones, physical stress, anaerobic exercise, acid-base balance, pH
Type of Medium:
Online Resource
ISSN:
1066-7814
Language:
English
Publisher:
Canadian Science Publishing
Publication Date:
2000
SSG:
31
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