Short-Term Hypoxic Exposure and Training Improve Maximal Anaerobic Running Test Performance

• Autores: Marie Oriishi, Takeo Matsubayashi, Takashi Kawahara, Yasuhiro Suzuki
• Localización: Journal of strength and conditioning research: the research journal of the NSCA, ISSN 1064-8011, Vol. 32, Nº. 1, 2018, págs. 181-188
• Idioma: inglés
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• Resumen

  • 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-1) 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.