Question 1

What is lactate threshold in cycling?

Accepted Answer

Lactate threshold (LT) is the exercise intensity at which lactate begins to accumulate in the blood faster than your body can clear it. In cycling, this represents the highest sustainable effort you can maintain for approximately 30-60 minutes. There are actually two thresholds: LT1 (aerobic threshold, ~75% FTP) where lactate first rises above baseline, and LT2 (anaerobic threshold, ~95% FTP) where accumulation accelerates rapidly.

Question 2

How do I improve my lactate threshold?

Accepted Answer

The most effective way to improve lactate threshold is through sustained efforts at or just below your current threshold intensity (Zone 4). Classic "sweetspot" training at 88-94% of FTP is particularly effective. Combine this with a strong aerobic base (Zone 2 training) to improve lactate clearance capacity. Typical threshold workouts include 2-3 intervals of 10-20 minutes at 95-105% of FTP with adequate recovery between efforts.

Question 3

What is the difference between lactate threshold and FTP?

Accepted Answer

FTP (Functional Threshold Power) and lactate threshold are closely related but not identical. FTP is defined as the maximum power you can sustain for approximately one hour, while LT2 occurs at the metabolic tipping point where lactate accumulation accelerates. In practice, FTP is typically at or very near LT2 (usually within 5%). FTP is more practical to test in the field, while lactate threshold requires blood lactate measurements for precise determination.

Question 4

How often should I test my lactate threshold?

Accepted Answer

Test every 8-12 weeks during structured training, or at the beginning and end of each training block. Meaningful changes in lactate threshold take at least 4-6 weeks of consistent training to manifest. Over-testing wastes training time and can be demotivating if changes are too small to measure reliably.

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How do I improve my lactate threshold? +

What is the difference between lactate threshold and FTP? +

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