[2013] Olivia Harmanos: A Lacrosse Player Shooting A Lacrosse Ball

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[2013] Olivia Harmanos: A Lacrosse Player Shooting A Lacrosse Ball

A Lacrosse Player Shooting A Lacrosse Ball



Heart Rate/ Breathing Rate/ Blood Flow

Shooting a lacrosse ball is an anaerobic action because it is a small task that doesn’t really affect your heart rate; it stays the same. This does not affect your blood flow because there is not a need for increased oxygen. A lacrosse game is very aerobic because it is long, hard, and greatly affects your heart rate; heart rate increases. This activity does affect your blood flow because you need more oxygen. Your arteries expand due to the increased blood flow to your lungs to get more oxygen.

Follow Through

First I grip the lacrosse stick using my phalanges. My flexors and extensors pull on my phalanges. My radius and ulna are used to position the lacrosse stick in my grasp. My wrist is bent so I am using my carpals, and metacarpals. As I bring my arm back my bicep, deltiod, and pectorals contract causing my scapula, humerus, radius, and ulna to flex. The weight of the lacrosse stick is pressured on to my deltoid. My femur, patella, tibia, fibula, tarsals, metatarsals, and phalanges work together with my hamstrings, quadriceps, tibialis anterior, and my gastrocnemius to support my weight on both legs. The stance that I am in involves all isometric contractions because all my muscles and bones are already in fixed positions.

I step forward with my right leg which uses my femur, tarsal, metatarsal, phalanges, patella, tibia, and fibula. As I step, my iliopsoas, hamstrings, and tibialis anterior are contracting, so my hip, knee, and ankle are in flexion. Next I extend my right arm to full length which uses my carpals and metacarpals when I turn my wrist as I shoot. This movement also uses my phalanges when gripping the stick. The grip of my phalanges is an isometric contraction because my hand was fixed on the stick in my preparation phase. I also use my humerus, radius and ulna, my flexors and extensors, bicep, and tricep when I shoot. My bicep is lengthening (eccentric), while my tricep is contracting (concentric). At the same time that I am extending my arm, I turn my hips flexing my pelvis, and sacrum. I also am flexing my internal oblique, and my external oblique, this is a concentric contraction.


Lastly, I bring my lacrosse stick all the way down so my right arm is at its full extent. This movement includes my phalanges when gripping the stick. It also uses my humerus, and deltoids when I am bringing my arm around my body. My deltoid is the only muscle in my right arm with an eccentric contraction, the rest of the muscles in my arm including my flexors, and extesors are mainly isometric through most of the movement. I am also using my wrist flexors which are contracting, with carpals, and metacarpals because of the movement of my wrist. Next I bring my left arm towards my chest. This movement uses my biceps because my arm is coming toward me which also pulls my radius, and ulna. This movement also uses my bicep and tricep as my arm in coming toward me. My bicep flexes (contracting) while my tricep is stretched creating a eccentric contraction. Lastly, my pelvis, internal oblique, and external oblique are flexed to balance my follow through. As this movement occurs most of my weight is on my femur, patella, tibia, fibula, tarsal, metatarsal, and phalanges. Also, my gastrocnemeous and gluteus maximus are all contracting muscles.

By: Olivia HarmanosPeriod 1, Days 1,3,5


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