From Dr. Mirkin
Two years ago, Dr. Bangsbo did ground-breaking research supporting the leading theory that exhaustion of the sodium- potassium pump is the major cause of muscle fatigue during exercise (Acta Physiologica, November 2007). In this new study, he shows how sprint training improves a muscle's capacity to pump potassium back inside muscle cells during exercise, which helps all athletes run or cycle faster in competition, even in endurance events such as marathons and multi-day bicycle races.
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Very interesting.
ReplyDeleteI have long considered sprint training a route to improved endurance due to the positive effects it can have on speed reserve and running economy.
This mechanism is not something I had considered, though, in terms of the endurance improving properties of sprint training.