Laktattålighet

Laktattålighet, also known as lactate threshold or anaerobic threshold, refers to the point during intense physical activity at which lactate begins to accumulate in the blood at a faster rate than it can be removed. This threshold indicates a shift from predominantly aerobic energy production to a greater reliance on anaerobic metabolism, which produces lactate as a byproduct.

In endurance sports and exercise physiology, laktattålighet is considered a critical marker for athletic performance and training optimization. It typically occurs at a high percentage of an individual's maximum oxygen uptake (VO2 max), commonly ranging between 80-90%. Athletes with a higher laktattålighet can sustain higher intensities of exercise without experiencing rapid fatigue caused by lactate accumulation.

Measurement of laktattålighet involves incremental exercise tests, where blood lactate levels are monitored at each stage of increasing intensity. The point at which lactate concentrations rise sharply is identified as the lactate threshold. Training to improve laktattålighet often includes sustained efforts at or near this threshold, enhancing the body's ability to clear or tolerate lactate.

Understanding and training according to one's laktattålighet can lead to improved endurance, increased exercise capacity, and better overall performance in sports requiring sustained high-intensity effort. It remains a central concept in sports science, athletic training, and physiology, providing insights into an individual's metabolic efficiency and endurance potential.