Current Trends in Altitude Training
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Recently, endurance athletes have used several novel approaches and modalities for altitude training including: (i) normobaric hypoxia via nitrogen dilution (hypoxic apartment); (ii) supplemental oxygen; (iii) hypoxic sleeping devices; and (iv) intermittent hypoxic exposure (IHE).
A normobaric hypoxic apartment simulates an altitude environment equivalent to approximately 2000 to 3000m (6560 to 9840ft). Athletes who use a hypoxic apartment typically ‘live and sleep high’ in the hypoxic apartment for 8 to 18 hours a day, but complete their training at sea level, or approximate sea level conditions. Several studies suggest that using a hypoxic apartment in this manner produces beneficial changes in serum erythropoietin (EPO) levels, reticulocyte count and red blood cell (RBC) mass, which in turn may lead to improvements in postaltitude endurance performance. However, other studies failed to demonstrate significant changes in haematological indices as a result of using a hypoxic apartment. These discrepancies may be caused by differences in methodology, the hypoxic stimulus that athletes were exposed to and/or the training status of the athletes.
Supplemental oxygen is used to simulate either normoxic (sea level) or hyperoxic conditions during high-intensity workouts at altitude. This method is a modification of the ‘high-low’ strategy, since athletes live in a natural terrestrial altitude environment but train at ‘sea level’ with the aid of supplemental oxygen. Limited data regarding the efficacy of hyperoxic training suggests that highintensity workouts at moderate altitude (1860m/6100ft) and endurance performance at sea level may be enhanced when supplemental oxygen training is utilised at altitude over a duration of several weeks.
Hypoxic sleeping devices include the Colorado Altitude Training (CAT) Hatch™ (hypobaric chamber) and Hypoxico Tent System™ (normobaric hypoxic system), both of which are designed to allow athletes to sleep high and train low. These devices simulate altitudes up to approximately 4575m/15006ft and 4270m/14005ft, respectively. Currently, no studies have been published on the efficacy of these devices on RBC production, maximal oxygen uptake and/or performance in elite athletes.
IHE is based on the assumption that brief exposures to hypoxia (1.5 to 2.0 hours) are sufficient to stimulate the release of EPO, and ultimately bring about an increase in RBC concentration. Athletes typically use IHE while at rest, or in conjunction with a training session. Data regarding the effect of IHE on haematological indices and athletic performance are minimal and inconclusive.
KeywordsEndurance Athlete Normobaric Hypoxia Simulated Altitude Altitude Training Hypobaric Chamber
- 3.Rusko, HK. New aspects of altitude training. Am J Sports Med 1996; 24 Suppl. 6: S48-S52Google Scholar
- 4.Levine BD, Stray-Gundersen J, Duhaime G, et al. Living high - training low: the effect of altitude acclimatization/normoxic training in trained runners [abstract]. Med Sci Sports Exerc 1991; 23 Suppl. 4: S25Google Scholar
- 6.Laitinen H, Alopaeus K, Heikkinen R, et al. Acclimatization to living in normobaric hypoxia and training at sea level in runners [abstract]. Med Sci Sports Exerc 1995; 27 Suppl. 5: S109Google Scholar
- 7.Rusko HK, Leppavuori A, Makela P, et al. Living high, training low: a new approach to altitude training at sea level in athletes [abstract]. Med Sci Sports Exerc 1995; 27 Suppl. 5: S6Google Scholar
- 8.Rusko HK, Tikkanen H, Paavolainen L, et al, . Effect of living in hypoxia and training in normoxia on sea level V̇O2max and red cell mass [abstract]. Med Sci Sports Exerc 1999; 31 Suppl. 5: S86Google Scholar
- 9.Mattila V, Rusko H. Effect of living high and training low on sea level performance in cyclists [abstract]. Med Sci Sports Exerc 1996; 28 Suppl. 5: S157Google Scholar
- 15.Gore CJ, Gawthorn KM, Clark S, et al. Does intermittent normobaric hypoxic exposure uncouple submaximal V̇O2 and power? [abstract]. Med Sci Sports Exerc 1999; 31 Suppl. 5: S190Google Scholar
- 16.Roberts AD, Martin DT, Gore CJ, et al. Live high: train low altitude exposure enhances anaerobic energy capacity [abstract]. Med Sci Sports Exerc 2000; 32 Suppl. 5: S47Google Scholar
- 22.Nummela AT, Hamalainen IT, Rusko HK. Effect of hyperoxia on SaO2, blood pH and heart rate recovery during intermittent exercise [abstract]. Med Sci Sports Exerc 2000; 32 Suppl. 5: S358Google Scholar
- 23.Hamalainen IT, Nummela AT, Rusko HK. Training in hyperoxia improves 3000-m running performance in national level athletes [abstract]. Med Sci Sports Exerc 2000; 32 Suppl. 5: S47Google Scholar
- 35.Hellemans J. Intermittent hypoxic training: a pilot study. Proceedings of the Second Annual International Altitude Training Symposium; 1999 Feb 18–20; Flagstaff (AZ), 145–54Google Scholar
- 37.Frey WO, Zenhausern R, Colombani PC, et al. Influence of intermittent exposure to normobaric hypoxia on hematological indexes and exercise performance [abstract]. Med Sci Sports Exerc 2000; 32 Suppl. 5: S65Google Scholar
- 39.Meeuwsen T, Hendriksen IJM, Holewijn M, et al. Training-induced increases in sea-level performance is enhanced by acute intermittent hypobaric hypoxia: a 2 year crossover study [abstract]. Med Sci Sports Exerc 2000; 32 Suppl. 5: S251Google Scholar
- 44.de Merode A. International Olympic Committee Medical Commission prohibited classes of substances and methods of doping [letter]. Comite Internationale Olympique; 2000 Feb 15; Lausanne. In: Bowers LD, editor. United States Anti-Doping Agency guide to prohibited classes of substances and prohibited methods of doping. Colorado Springs (CO): United States Anti-Doping Agency, 2000: 3Google Scholar
- 45.Norwegian Ministry of Sport Steering Committee. Press release. 1998 MayGoogle Scholar