Hypoxic sprint training
A few weeks back I posted about how the Australian Racing Board had seen fit to investigate the use of hypoxic training in thoroughbreds. I noted at the time that there was some conjecture as to the efficacy of training in hypoxia with some studies reporting its success and others not. A study that appeared last week in the Medicine & Science in Sports & Exercise journal seems to fall in the "does not" category. The study compared the effect of sprint interval training in normoxia versus hypoxia on muscle glycolytic and oxidative capacity, monocarboxylate transporter content, and endurance exercise performance in humans and found that while sprint interval training in hypoxia upregulated the anaerobic threshold more than the same training in normoxia, it did not enhance actual endurance exercise performance in humans.