LT1 and LT2 typically refer to two distinct physiological thresholds that are invaluable in endurance training and physical fitness assessment. The full names and meanings of these terms are as follows:
LT1: Lactate Threshold 1 Also known as the first lactate threshold or the Aerobic Threshold, LT1 marks the level of exercise intensity at which lactate begins to accumulate in the blood, but the body can still effectively clear it. Exercise intensity below LT1 is primarily aerobic, and the body can sustain prolonged activity.
LT2: Lactate Threshold 2 Often referred to as the Anaerobic Threshold or Functional Threshold Power (FTP), specifically for cyclists, LT2 represents the second turning point in exercise intensity. At this point, the rate of lactate production surpasses the body’s ability to clear it, leading to a significant rise in blood lactate levels. This point also marks the onset of rapid muscle fatigue accumulation, making it impossible to maintain the activity for extended periods.
In training, identifying an individual’s LT1 and LT2 can help craft more effective training plans, such as:
- Conducting long-duration endurance training near LT1 to improve the body’s aerobic capacity and efficiency.
- Engaging in interval training near or slightly above LT2 to enhance anaerobic capacity and threshold levels.
The measurement of LT1 and LT2 typically involves controlled exercise tests, such as incrementally increasing the intensity of cycling or running, while simultaneously measuring physiological parameters like lactate levels, heart rate, and respiratory exchange ratios. These tests are usually administered by exercise physiologists or trained coaches to ensure accuracy and safety.
No Comment! Be the first one.