Lactate threshold, known as LT2, MLSS, anaerobic lactate threshold, or OBLA, is a crucial performance metric for athletes in various endurance sports. However, achieving the highest lactate threshold alone does not guarantee being in top shape. Optimal performance requires a multifaceted approach, including mental strength, improved power-to-weight ratio, enhanced fat oxidation, and overall freshness. In addition to lactate threshold, two other important metrics for athletes are maximum oxygen uptake (V02max) and fractional utilization (FU) of V02max, indicating the percentage of V02max that can be utilized before crossing the lactate threshold.
Utilizing Blood Lactate Step Test
The blood lactate step test is a valuable tool for assessing these metrics, including lactate threshold (LT2). By establishing the link between LT2 power and V02max power, and calculating fractional utilization of V02max, it becomes possible to predict race performance. Fractional V02max, which can be sustained over long durations without fatigue-inducing by-products, such as hydrogen ions, water, heat, and CO2, is particularly useful for endurance events.
Aerobic Capacity and Tailoring Anaerobic Development
A well-developed aerobic energy support system is vital for sustained energy production from oxidized fat and efficient oxygen supply to the muscles. It also minimizes reliance on the anaerobic energy system, thereby reducing the production of metabolic by-products. Athletes must strike a balance by maximizing their aerobic capacity and tailoring anaerobic development (VLamax) to match the demands of their primary event. VLamax ranges from 0.2-1.0 mmol/L/sec, with lower values preferred for endurance athletes and higher values for sprinters.
