NDLI: Changes in performance, maximal oxygen uptake and maximal accumulated oxygen deficit after 5, 10 and 15 days of live high:train low altitude exposure

Content Provider	Springer Nature Link
Author	Roberts, A. Clark, S. Townsend, N. Anderson, M. Gore, C. Hahn, A.
Copyright Year	2003
Abstract	Nineteen well-trained cyclists (14 males and 5 females, mean initial V˙O2max 62.3 ml kg–1 min–1) completed a multistage cycle ergometer test to determine maximal mean power output in 4 min (MMPO4min), maximal oxygen uptake (V˙O2max) and maximal accumulated oxygen deficit (MAOD). The athletes were divided into three groups, each of which completed 5, 10 or 15 days of both a control condition (C) and live high:train low altitude exposure (LHTL). The C groups lived and trained at the ambient altitude of 610 m. The LHTL groups spent 8–10 h night–1 in normobaric hypoxia at a simulated altitude of 2,650 m, and trained at the ambient altitude of 610 m. The changes to MMPO4min, V˙O2max and MAOD in response to LHTL altitude exposure were not significantly different for the 5-, 10- and 15-day treatment periods. For the pooled data from all three treatment periods, there were significant increases in MMPO4min [mean (SD) 5.15 (0.83) W kg–1 vs 5.34 (0.78) W kg–1] and MAOD [50.1 (14.2) ml kg–1 vs 54.9 (13.1) ml kg–1] in the LHTL athletes between pre- and post-altitude exposure. There were no significant changes in MMPO4min [5.09 (0.76) W kg–1 vs 5.16 (0.86) W kg–1] or MAOD [50.5 (14.1) ml kg–1 vs 49.1 (13.0) ml kg–1] in the C athletes over the corresponding period. There were significant increases in V˙O2max in the athletes during both the LHTL [63.2 (9.0) ml kg–1 min–1 vs 64.1 (9.0) ml kg–1 min–1] and C [62.0 (8.6) ml kg–1 min–1 vs 63.4 (9.2) ml kg–1 min–1] conditions. In these athletes, there was no difference in the impact of 5, 10 or 15 days of LHTL on the increases observed in MMPO4min, V˙O2max or MAOD; and LHTL increased MMPO4min and MAOD more than training at low altitude alone.
Starting Page	390
Ending Page	395
Page Count	6
File Format	PDF
ISSN	14396319
Journal	European Journal of Applied Physiology
Volume Number	88
Issue Number	4
e-ISSN	14396327
Language	English
Publisher	Springer-Verlag
Publisher Date	2002-11-07
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Orthopedics and Sports Medicine Physiology (medical) Public Health, Environmental and Occupational Health Sports Science

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Time course of haemoglobin mass during 21 days live high:train low simulated altitude

Negative accumulated oxygen deficit during heavy and very heavy intensity cycle ergometry in humans

Effects of acute moderate hypoxia on anaerobic capacity in endurance-trained runners

The effect of pedalling cadence on maximal accumulated oxygen deficit

Examining the accumulated oxygen deficit method in breaststroke swimming

Maximal accumulated oxygen deficit expressed relative to the active muscle mass for cycling in untrained male and female subjects

Relationship between changes in haemoglobin mass and maximal oxygen uptake after hypoxic exposure.

Ischemic preconditioning improves maximal performance in humans

Effectiveness of intermittent training in hypoxia combined with live high/train low

Changes in performance, maximal oxygen uptake and maximal accumulated oxygen deficit after 5, 10 and 15 days of live high:train low altitude exposure

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