title: Short-Term Hypoxic Exposure and Training Improve Maximal Anaerobic Running Test Performance.
abstract: Oriishi, M, Matsubayashi, T, Kawahara, T, and Suzuki, Y. Short-term hypoxic exposure and training improve maximal anaerobic running test performance. J Strength Cond Res 32(1): 181-188, 2018-The purpose of this study was to examine the effectiveness of short-term hypoxic exposure and training in the performance of competitive 400- or 800-m runners. Fifteen female competitive 400- and 800-m runners volunteered to participate and were assigned to either the hypoxic (n = 7) or normoxic (n = 8) group. The subjects completed 6 days of training. The hypoxic group trained and slept in normobaric hypoxia, with oxygen concentrations of 14.4 and 16.5% for training and sleep, respectively. The normoxic group trained and slept at sea level. The subjects completed 4 sprint and 5 endurance training sessions during the camp. The subjects underwent a maximal anaerobic running test before and 8 days after the training camp. The maximal power determined by the anaerobic running test improved significantly in the hypoxic group (p ≤ 0.05). Blood lactate concentration at submaximal running speed (275, 300, and 375 m·min) in the hypoxic group decreased significantly (p ≤ 0.05) after the training period. No significant changes in these values were found in the normoxic group. These results suggest that 6 days of hypoxic exposure and training enhanced performance and improved lactate metabolism in 400- and 800-m runners.
authors.affiliation: Graduate School of Physical Education, National Institute of Fitness and Sports in Kanoya, Tokyo, Japan.
authors.forename: Marie
authors.initials: M
authors.lastname: Oriishi
authors.affiliation: Department of Sports Sciences, Japan Institute of Sports Sciences, Tokyo Japan.
authors.forename: Takeo
authors.initials: T
authors.lastname: Matsubayashi
authors.affiliation: Department of Sports Sciences, Japan Institute of Sports Sciences, Tokyo Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Kawahara
authors.affiliation: Department of Sports Sciences, Japan Institute of Sports Sciences, Tokyo Japan.
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Suzuki
mesh_terms: D005260:Female; D006801:Humans; D000860:Hypoxia / Q000503:physiopathology*; D019344:Lactic Acid / Q000097:blood; D010101:Oxygen Consumption; D010807:Physical Endurance / Q000502:physiology; D012420:Running / Q000502:physiology*; D055815:Young Adult
chemical_list: D019344:Lactic Acid