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Effect of Different Simulated Altitudes on Repeat-Sprint Performance in Team-Sport Athletes.
- Source :
- International Journal of Sports Physiology & Performance; Sep2014, Vol. 9 Issue 5, p857-862, 6p
- Publication Year :
- 2014
-
Abstract
- Purpose: This study aimed to assess the impact of 3 heights of simulated altitude exposure on repeat-sprint performance in team-sport athletes. Methods: Ten trained male team-sport athletes completed 3 sets of repeated sprints (9 x 4 s) on a nonmotorized treadmill at sea level and at simulated altitudes of 2000, 3000, and 4000 m. Participants completed 4 trials in a random order over 4 wk, with mean power output (MPO), peak power output (PPO), blood lactate concentration (Bla), and oxygen saturation (S<subscript>2</subscript>O<subscript>2</subscript>) recorded after each set Results: Each increase in simulated altitude corresponded with a significant decrease in S<subscript>2</subscript>O<subscript>2</subscript>. Total work across all sets was highest at sea level and correspondingly lower at each successive altitude (P < .05; sea level < 2000 m < 3000 m < 4000 m). In the first set, MPO was reduced only at 4000 m, but for subsequent sets, decreases in MPO were observed at all altitudes (P < .05; 2000 m < 3000 m < 4000 m). PPO was maintained in all sets except for set 3 at 4000 m (P < .05; vs sea level and 2000 m). BLa levels were highest at 4000 m and significantly greater (P < .05) than at sea level after all sets. Conclusions: These results suggest that “higher may not be better,” as a simulated altitude of 4000 m may potentially blunt absolute training quality. Therefore, it is recommended that a moderate simulated altitude (2000-3000 m) be employed when implementing intermittent hypoxic repeat-sprint training for team-sport athletes. [ABSTRACT FROM AUTHOR]
- Subjects :
- ACTIVE oxygen in the body
ALTITUDES
ANALYSIS of variance
HYPOXEMIA
ATHLETIC ability
COMPARATIVE studies
EXERCISE
HEART beat
HYDROGEN-ion concentration
LACTATES
HEALTH outcome assessment
PROBABILITY theory
EFFECT sizes (Statistics)
TREADMILLS
PHYSICAL training & conditioning
TEAM sports
REPEATED measures design
BLIND experiment
Subjects
Details
- Language :
- English
- ISSN :
- 15550265
- Volume :
- 9
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- International Journal of Sports Physiology & Performance
- Publication Type :
- Academic Journal
- Accession number :
- 98536481
- Full Text :
- https://doi.org/10.1123/ijspp.2013-0423