Lactic Acid in the Knees

March 22, 2013
Lactic Acid in the Knees

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Your body produces lactic acid, or lactate, in the absence of adequate oxygen to transform sugar to energy. As your degree of intensity boosts, so do your levels of lactic acid. The muscle tiredness and discomfort that accompany lactic acid have actually offered it a bad rap among athletes in general, and distance runners in particular, who experience discomfort in their knee joints following intense exercise.


Your body produces lactate when oxygen degrees are reduced, in order to permit the breakdown of sugar for energy. Your body typically gets fuel through a process known as glycolysis, which turns glucose into a compound referred to as pyruvate, and then, when adequate oxygen is offered, delivers it with aerobic paths as energy. Nonetheless, when oxygen levels are depleted, as commonly takes place during durations of strenuous workout or contagious condition, your body transforms pyruvate to lactate to assist in sugar breakdown.

Lactic Acidosis

Lactic acidosis is a condition that takes place when too much lactic acid builds up in your blood at a rate that’s faster than it’s utilized to. This condition contributes signs of queasiness and weak point, possibly hindering athletic performance. It ends up that it isn’t really lactic acid that causes the muscle weak point but other metabolites that aren’t yet well comprehended. These metabolites add to fatigue, a burning feeling and post-exercise tenderness.


Although lactic acid is burned rapidly and leaves the body within an hour approximately of exercise, numerous sportsmens start to experience delayed beginning muscle discomfort, or DOMS. This condition, commonly leading to sore muscles and knees, has actually often been attributed to lactic acid buildup. Nevertheless, it isn’t that basic reports a short article released in 2004 in ‘American Diary of Physiology Regulatory Integrative and Comparative Physiology.’ This post reported that lactic acid delays fatigue and tenderness, however it takes place as a result of various other biological processes.

Lactic Threshold

While the former reasoning of lactic acid’s causal relationship with muscle fatigue has actually been shown damaged, the message continues to be the exact same for runners aiming to secure their knees. Lactic threshold is identified by blood testing and has been made use of to identify the ideal training regimen to optimize speed while lessening muscle fatigue. While the relationship couldn’t be direct, lactic threshold appears to still play a function in figuring out optimum training. An information released in March 2011 in the ‘Journal of Strength & Conditioning Research’ reported that middle-distance distance runners improved considerably when training at their lactic threshold as opposed to training at a slower pace.