title: On the use of mobile inflatable hypoxic marquees for sport-specific altitude training in team sports.
abstract: OBJECTIVE
  With the evolving boundaries of sports science and greater understanding of the driving factors in the human performance physiology, one of the limiting factors has now become the technology. The growing scientific interest on the practical application of hypoxic training for intermittent activities such as team and racket sports legitimises the development of innovative technologies serving athletes in a sport-specific setting.
  
  
  METHODS
  Description of a new mobile inflatable simulated hypoxic equipment.
  
  
  RESULTS
  The system comprises two inflatable units-that is, a tunnel and a rectangular design, each with a 215 m(3) volume and a hypoxic trailer generating over 3000 Lpm of hypoxic air with FiO₂ between 0.21 and 0.10 (a simulated altitude up to 5100 m). The inflatable units offer a 45 m running lane (width=1.8 m and height=2.5 m) as well as a 8 m × 10 m dome tent. FiO₂ is stable within a range of 0.1% in normal conditions inside the tunnel. The air supplied is very dry-typically 10-15% relative humidity.
  
  
  CONCLUSIONS
  This mobile inflatable simulated hypoxic equipment is a promising technological advance within sport sciences. It offers an opportunity for team-sport players to train under hypoxic conditions, both for repeating sprints (tunnel configuration) or small-side games (rectangular configuration).
authors.affiliation: Research and Education Centre, ASPETAR, Qatar Orthopaedic and Sports Medicine Hospital, , Doha, Qatar.
authors.forename: Olivier
authors.initials: O
authors.lastname: Girard
authors.forename: Franck
authors.initials: F
authors.lastname: Brocherie
authors.forename: Grégoire P
authors.initials: GP
authors.lastname: Millet
mesh_terms: D000531:Altitude; D004867:Equipment Design; D006801:Humans; D000860:Hypoxia / Q000503:physiopathology; D008952:Mobile Health Units; D013178:Sports Medicine / Q000295:instrumentation*
keywords: Altitude; Elite Performance; Exercise Physiology; Soccer; Training