Which factor contributes to the formation of trigger points?

The formation of trigger points in muscles is significantly influenced by changes in pH levels and dysfunction in nutrient transfer. Trigger points often arise when muscle tissue experiences a lack of adequate blood flow, leading to an accumulation of metabolic waste products and a decrease in essential nutrients. This imbalance causes local tissues to become irritated, leading to muscle-fiber dysfunction and the development of tender points commonly associated with trigger points.

When the pH of the muscle tissue decreases—becoming more acidic due to the buildup of lactic acid and other metabolites—this can initiate a cascade of neurological and muscular responses that result in the hyperirritability characteristic of trigger points. Alongside changes in pH, nutrient transfer dysfunction can prevent the delivery of necessary substrates for muscle function and recovery, exacerbating the issue. Therefore, understanding these biochemical factors is essential for recognizing how trigger points form and persist in muscular tissue.