Live high:train low increases muscle buffer capacity and submaximal cycling efficiency

• DOI: 10.1046/j.1365-201x.2001.00906.x
• Publication Date: 2003-03-11T03:33:53Z
• Authors: C. J. Gore; A. G. Hahn; R. J. Aughey; D. T. Martin; M. J. Ashenden; S. A. Clark; A. P. Garnham; A. D. Roberts; G. J. Slater; M. J. Mckenna
• Keywords: Hypoxia; Exercise physiology

This study investigated whether hypoxic exposure increased muscle buffer capacity ( β m) and mechanical efficiency during exercise in male athletes. A control (CON, n =7) a live high:train low group (LHTL, =6) trained at near sea level (600 m), with the LHTL sleeping for 23 nights simulated moderate altitude (3000 m). Whole body oxygen consumption (V˙ O 2 ) was measured under normoxia before, after of hypoxia, cycle ergometry comprising 4×4‐min submaximal stages, 2‐min 5.6 ± 0.4 W kg –1 , ‘all‐out’ to determine total work V˙ 2peak . vastus lateralis biopsy taken rest standardized bout, before LHTL, analysed m metabolites. After (18%, P < 0.05). Although maintained, fell (7%, Submaximal reduced (4.4%, 0.05) improved (0.8%, probably because shift fuel utilization. is first show that exposure, per se, increases capacity. Further, normoxic suggests fundamental adaptation LHTL.