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Substrate Utilization in Sea Level Residents During Exercise in Acute Hypoxia and After 4 Weeks of Acclimatization to 4100 M by C. Lundby; G. Van Hall is a Medicine article available to read on EtoBox.

What is Substrate Utilization in Sea Level Residents During Exercise in Acute Hypoxia and After 4 Weeks of Acclimatization to 4100 M about?

## ABSTRACT To investigate the effect of acclimatization to hypoxia on substrate utilization, eight sea level residents were studied during exercise at the same relative (rel) and absolute (abs) work rate as at sea level (SL), under acute (AH), and after 4 weeks exposure to 4100 m altitude (CH). Carbohydrate (CHO) and fat oxidation during exercise at SL were 2.0 ± 0.2 and 0.3 ± 0.0 g min^−1^, respectively. At AH~abs~ and CH~abs~ CHO oxidation increased (__P__ < 0.05) to 2.5 ± 0.2 and 2.3 ± 0.1 for CHO, and fat oxidation decreased (__P__ < 0.05) to 0.2 ± 0.01 and 0.2 ± 0.01 g min^−1^, respectively. Exercise in AH~rel~ and CH~rel~ did not cause a change in the relative CHO and fat oxidation compared with SL, the absolute rate of CHO oxidized being 1.7 ± 0.1 and 1.7 ± 0.02 g min^−1^, respectively, and fat oxidation was 0.2 ± 0.02 g min^−1^ in AC~rel~ and 0.3 ± 0.02 g min^−1^ in CH~rel~. In conclusion, substrate utilization is unaffected by AH and CH, when the work rate is matched to the same relative intensity as at SL.

Who reads Substrate Utilization in Sea Level Residents During Exercise in Acute Hypoxia and After 4 Weeks of Acclimatization to 4100 M?

Author

C. Lundby; G. Van Hall

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Wiley (ISSN 0001-6772)

Published

2002

Language

EN

Field

Medicine (Life Sciences)