What are these knots in my back and neck?? Are these normal? How do I get rid of them? This is a very popular question that we get asked here in the office at North Shore Pro-Active Health. Before we answer the question above let us talk about how muscle fibers work. Within skeletal muscle there are three types of fiber. Type one (I), type two A (IIa) and type two B (IIb). Each fiber types has different qualities in the way they perform and how quickly they fatigue.

Types of Trigger Points

Type I fibers are also known as slow twitch fibers. They are red in color due to the presence of large volumes of myoglobin (iron-oxygen binding protein) and high numbers of Mitochondria (power house of the cell). They are very resistant to fatigue and are capable of producing repeated low-level contractions by producing large amounts of ATP (Adenosine triphosphate) through an aerobic metabolic cycle. The muscles containing mainly type I fibers are often postural muscles such as those in the neck a...