title: The Effect of Training at 2100-m Altitude on Running Speed and Session Rating of Perceived Exertion at Different Intensities in Elite Middle-Distance Runners.
abstract: OBJECTIVE
  To determine the effect of training at 2100-m natural altitude on running speed (RS) during training sessions over a range of intensities relevant to middle-distance running performance.
  
  
  METHODS
  In an observational study, 19 elite middle-distance runners (mean ± SD age 25 ± 5 y, VO2max, 71 ± 5 mL · kg-1· min-1) completed either 4-6 wk of sea-level training (CON, n = 7) or a 4- to 5-wk natural altitude-training camp living at 2100 m and training at 1400-2700 m (ALT, n = 12) after a period of sea-level training. Each training session was recorded on a GPS watch, and athletes also provided a score for session rating of perceived exertion (sRPE). Training sessions were grouped according to duration and intensity. RS (km/h) and sRPE from matched training sessions completed at sea level and 2100 m were compared within ALT, with sessions completed at sea level in CON describing normal variation.
  
  
  RESULTS
  In ALT, RS was reduced at altitude compared with sea level, with the greatest decrements observed during threshold- and VO2max-intensity sessions (5.8% and 3.6%, respectively). Velocity of low-intensity and race-pace sessions completed at a lower altitude (1400 m) and/or with additional recovery was maintained in ALT, though at a significantly greater sRPE (P = .04 and .05, respectively). There was no change in velocity or sRPE at any intensity in CON.
  
  
  CONCLUSIONS
  RS in elite middle-distance athletes is adversely affected at 2100-m natural altitude, with levels of impairment dependent on the intensity of training. Maintenance of RS at certain intensities while training at altitude can result in a higher perceived exertion.
authors.forename: Avish P
authors.initials: AP
authors.lastname: Sharma
authors.forename: Philo U
authors.initials: PU
authors.lastname: Saunders
authors.forename: Laura A
authors.initials: LA
authors.lastname: Garvican-Lewis
authors.forename: Brad
authors.initials: B
authors.lastname: Clark
authors.forename: Jamie
authors.initials: J
authors.lastname: Stanley
authors.forename: Eileen Y
authors.initials: EY
authors.lastname: Robertson
authors.forename: Kevin G
authors.initials: KG
authors.lastname: Thompson
mesh_terms: D000328:Adult; D000531:Altitude; D056352:Athletes; D005260:Female; D006801:Humans; D008297:Male; D010101:Oxygen Consumption; D064797:Physical Conditioning, Human; D005082:Physical Exertion; D012420:Running / Q000502:physiology*; D055815:Young Adult
keywords: endurance; exercise prescription; load monitoring