Lactate threshold. Lactate inflection point ( LIP) is the exercise intensity at which the blood concentration of lactate and/or lactic acid begins to increase rapidly. [1] It is often expressed as 85% of maximum heart rate or 75% of maximum oxygen intake. [2] For adults aged 18-39 years, a lactate level of 4.0 mmol/L or higher was associated with a mortality of 5% or greater; for adults aged 40-64 years, this threshold decreased to ≥ 3.0 mmol/L; for adults aged 65 years or older, a lactate level of ≥ 2.0 mmol/L was associated with a 5% or greater mortality rate (Figure 2, p <0.0001). Mean In a Threshold Run, you are training just below that threshold and, rather than slowing you down your body is able to utilize lactate as fuel. You should be able to maintain a consistent, fast pace for at least 20 minutes. Heart Rate Zones 3 and 4. Traditionally, and certainly in Zwift, we divide heart rate into 5 "zones." Zone 1 is Blue Lactate-threshold pace is about 10 to 15 seconds per mile slower than 5K race pace (or about 10K race pace) for slower runners (slower than about 40 minutes for 10K). If using a heart-rate (HR) monitor, the pace is about 75 to 80 percent max HR. The pace should feel "comfortably hard.". For instance, focusing time-at-intensity near lactate threshold can increase the amount of work you can perform aerobically before reaching lactate threshold. Increases in heart rate correspond reliably with increases in exercise workload. As a result, we can use lactate threshold testing (lab test) or Functional Threshold Heart Rate testing For example, having your lactate threshold heart rate taken in a lab for cycling would not be able to translate to your running LTHR (lactate threshold heart rate). Why? Running utilizes more muscles for movement, which requires more oxygen and therefore would send signals to the heart to increase your heart rate. Therefore your LTRH for .

what is lactate threshold heart rate