LT Training Key to Beating Fatigue

From Running Times

While the lactate threshold is the fastest running speed above which lactate accumulates and acidosis occurs, what it really represents, in simple terms, is your ability to withstand fatigue and run hard for long periods of time. Research has shown that people with less fatigueable muscles produce less lactate during exercise, have a higher lactate threshold, and are able to perform at higher relative exercise intensities for prolonged periods.