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Extension Essay Topics & Paper Examples

Knee Injury Case Study

What are the primary movements of the knee joint? The primary movements of the knee joint are flexion and extension but can also slightly rotate. What muscle groups are the most important in flexion and extension of the knee? The muscle groups most important are the quadriceps and the hamstrings. The quadriceps extend the knee using the following muscles; rectus femoris, vastus medialis, vastus intermedius, and vastus lateralis. The hamstrings are responsible for flexing the knee using the following muscles; semimembranosus, biceps femoris, and semitendinosus. What happens to muscle and bone tissue when they are not used? When muscle and bone tissues are not used they become weak and basically waste away, because when not in use less blood and…

Triple Jump Biomechanics

Triple Jump Biomechanics Triple Jump it is where an athlete sprints down a track, takes off at the board on one leg, hops, then again on the same leg before stepping onto the opposite leg and jumping into a pit of sand. This is called “hop, step and jump”. To be successful the athlete must be a fast sprinter with strong Gluteus, Hamstring, Iliopsoas, Quadriceps and Vastus muscle groups and core muscles: transverse and rectus abdominus, obliques and latissimus dorsi. They must also have the coordination and balance to complete the triple jump technique. Start, run-up, pre-take-off, hop, step, jump, flight and landing are the specific stages of triple jump. At the very start the athlete must overcome inertia to…