10-28-04Kinesiology Squats Versus LungeThe purpose of my project grade sheet is to get a better understanding of the movement I chose which was squats versus lunges. The body of my research paper will give the reader a better understanding of the following for my specific movement. Anatomy: The origin and insertions that are involved include the Glutes- gluteus medius, gluteus maximus, Hamstrings- lliotibial band, biceps femoris, semitendinosus, adductor magnus, gracilis, semimembranosus. Calves- Gastrocnemius, soleus, peroneus brevis, flexor hallucis longus. Thighs- Pectineus, sartorius, adductor longus, tensor fasciae latae, gracilis, quadriceps, rectus femoris, vastus intermedius, vastus lateralis, and vastus medialis.
These muscles originate just beneath the gluteus maximus on the pelvic bone and attach on the tibia. The primary functions are knee flexions which involve bringing the heel towards the gluteus maximus and hip extensions moving the leg to the rear end. Squats and lunges are a simple but very effective exercise for the lower bodies specifically the legs. It helps with balance and coordination which comes very useful for any sporting events as well as muscle development. The hamstrings, gluteus, and quadriceps muscles can be worked by using dumbbells, barbells or just by simply using your own body weight, which we refer to as calisthenics. The most important point to remember about calisthenics is that if your muscles do not receive more stress than what they are used to, you are wasting your time.
The advantages of using dumbbells and barbells are more effective in developing the smaller synergistic (helping) muscles and stabilizer muscles. Synergism is the combined effects of two or more parts of forces or agents which is greater than the sum of individual effects. The bone articulations that are involved include the pelvic bone, tibia bone and femur. The soft tissue ligaments (connects bone to bone) and tendons (connects muscle to bone) that are involved are the anterior and posterior cruciates, patella tendon connects quadriceps muscles to patella, and it also involves the shins. Kinetics: Sir Isaac Newton a scientist during the 1600’s, made observations about the world surrounding him. The observations he came up with and out of those he developed the three laws of motion.
Newton’s laws of motion explain rest, constant motion, and acceleration motion; He described how balance and unbalanced forces act to cause the states of motions. In other words they are fundamental to understanding human movement. The laws that account for my movements are the law of inertia, which is the first law, it states “a body in motion tends to remain in motion at the same speed in a straight line unless acted on by a force; a body at rest tends to remain at rest unless acted on by a force”. The law of reaction which is the third law states “for every action there is an opposite and equal reaction. ” Last, the law of motion, is the relationship between an objects mass, its acceleration and the applied force (F=MA). All three laws applied to my movement.
Applied force and gravity force were the only two forces that are acting within the squat and lunge movement. The law of inertia reads that the heavier the weight the more force it takes to overcome inertia and set the body in motion, likewise, a heavy body would require more force to stop it than a lighter body would. The law of reaction complies that the weight of a dumbbell the magnitude of the force of gravity acting on the dumbbells is when doing squats and lunges The law of acceleration complies that when a bodybuilder is performing squat or lunge exercises with dumbbells the law of acceleration then comes to play during the upward thrust movement. The law of acceleration states “the object is proportional to the force which causes it and is in the same direction as that force. ” The force of gravity is the external force which the human body must constantly overcome in its movements. The force of gravity gives weight to a body and is measured in terms of the body’s weight.
The magnitude of muscular force is in direct proportion to the number and size of the muscle fibers in the contracting muscle. All three of .
