Fitness 1 by Coach KK

Continuing with our Muscle Theory series, while in the Part 1 we looked into some of the upper body muscles, in this post we will focus our attention on the muscles of the lower body starting from the glutes: 1. Gluteus Maximus: Origin:  Posterior ¼ of the crest of ilium, posterior surface of sacrum and coccyx near the ilium, and fascia of lumbar area. Insertion:  Oblique ridge on lateral surface of greater trochanter and iliotibial band of fasciae. Action:  Extension of hip, external rotation of hip, lower fibers which assist in adduction. Exercise/Movement:  Hip Thrust. 2. Rectus Femoris:  Origin: Anterior iliac spine of the ilium and groove (posterior) above the acetabulum. Insertion: Superior aspect of patella and patellar tendon to tibial tuberosity. Action: Flexion of hip, extension of knee. Exercise/Movement:  Leg Extension. 3. Vastus Lateralis: Origin: Intertrochanteric line, anterior and inferior borders of greater trochanter gluteal tuberosity,

This post is dedicated to some of the different muscles, their origins and insertions that we are primarily interested in when we train for Hypertrophy and/or Strength based on individual goals. Certain specific fibers organised into bands or bundles that may contract and produce bodily movement are called muscle tissue. Upon contraction, muscles pull both ends towards the middle or belly of the muscle. The points at which a muscle attaches are known as the origin and insertion of the muscle. A muscle may have one or more origin and/or insertion point. Origin is the proximal attachment, the least moveable or closest to the midline or centre of the body. While, insertion is the distal attachment, the most moveable or farthest from the midline or centre of the body. So, lets get started with the upper body muscles first and in a separate post we will look into the muscles of the lower body. 1. Trapezius (upper and middle): Origin: Upper: Base of skull, occipital protubera