Bicycling Magazine - Lactate Threshold 101

Bicycling Magazine - Lactate Threshold 101

Lactate threshold is the glass ceiling of cycling performance-it's an invisible barrier that keeps you down. When you do crack through, the rewards are sweet.

"For the longest time, everyone focused his or her training around max heart rate,"says USA Cycling expert coach Margaret Kadlick. "Now we know lactate threshold is much more important. When you raise your LT, you can produce more power at a comfortable heart rate, and that makes you a better rider and racer in every situation." Here's everything you need to know about lactate threshold-including how to raise yours to be the best rider you can be.

What Is Lactate Threshold?

Lactate, your body's buffering agent, neutralizes the acid that builds up in your legs and makes them burn during heavy exertion. The harder you turn the cranks, the faster acid accumulates. Eventually, your muscles generate more acid than you can neutralize and your searing muscles force you to ease up. The point at which you begin to accumulate acid more quickly than you can dissipate it is your LT, or, in riding terms, the fastest pace you can maintain for 30 minutes without feeling like your legs are on fire.

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