Response to Live High, Train Low Among Elite Olympic Distance Triathletes

Hiller, W. D. B.; Dierenfield, Laura; Fortess, Eric E.; Nielsen, Gertrude; Pinkert, T P.; Scudder, D A.; Wong, Danny; Thrower-Rodriguez, T R.; Yamada, Daishiro; Forde, K J.; Jensen, Stine Nylandsted

doi:10.1097/00005768-200105001-00010

Cited by 1 publication

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“…Although we did not quantify maximal oxygen consumption (VO 2 max), an obvious mechanism linking an increase in oxygen‐carrying capacity and enhancement of endurance performance following hypoxic exposure is an increase in VO 2 max. In studies of intermittent hypoxia some authors have reported improvements in VO 2 max of 1–5% with related increases in blood parameters (Hiller et al, 2001; Levine, Friedmann, & Stray‐Gundersen, 1996; Levine & Stray‐Gundersen, 1997; Levine et al, 1991; Rusko et al, 1999; Stray‐Gindersen et al, 1998). It is possible, however, that hypoxic exposure induces increases in VO 2 max mediated not by changes in oxygen carrying capacity of the blood but by some other mechanism.…”

Section: Discussionmentioning

confidence: 99%

“…In studies of intermittent hypoxia some authors have reported improvements in VO 2 max of 1 Á/5% with related increases in blood parameters (Hiller et al, 2001;Levine, Friedmann, & Stray-Gundersen, 1996;Levine & Stray-Gundersen, 1997;Levine et al, 1991;Rusko et al, 1999;Stray-Gindersen et al, 1998). It is possible, however, that hypoxic exposure induces increases in VO 2 max mediated not by changes in oxygen carrying capacity of the blood but by some other mechanism.…”

Section: Running Performance and Hypoxic Tents 19mentioning

confidence: 97%

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Changes in running endurance performance following intermittent altitude exposure simulated with tents

Hinckson

Hopkins

2005

European Journal of Sport Science

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The effect of intermittent hypoxia on sea-level endurance performance was assessed by using hypoxic tents to simulate the live high-train low approach to altitude training. Eleven male sub-elite competitive runners and triathletes participated in a crossover study of usual training (control) and usual training with altitude exposure (altitude). Altitude treatment consisted of 259/3 d (mean9/SD) of sleeping in tents for 8.19/0.6 h.d (1 , progressing from a simulated altitude of 2500 m to 3500 m above sea level. Washout period between control and altitude treatments was 4 wk. Three treadmill runs to exhaustion lasting Â/2, Â/4 and Â/8 min were completed 7 and 12 d after control and altitude treatments. Times for standard competition distances (800, 1500 and 3000 m), were predicted using a log-log model, improved by 1.0% (90% confidence limits, 9/1.3%), 1.4% (9/1.2%) and 1.9% (9/1.5%), respectively. Improvements were greater in the six athletes with an I allele for angiotensin converting enzyme (ACE): 2.3% (9/1.5%), 2.2% (9/1.5%), and 2.1%, (9/2.1%), respectively. Effects of simulated altitude on hemoglobin concentration were unclear. Altitude exposure simulated with hypoxic tents is likely to enhance performance substantially in middle-distance endurance running events, especially for individuals with an I allele of the ACE gene.

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