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Kinesiology 2241A/B Lecture Notes - Lecture 32: Handstand, Angular Momentum, Pole Bending

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School
Western University
Department
Kinesiology
Course
Kinesiology 2241A/B
Professor
Thomas Richard Jenkyn

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Document Summary

Rotation of the body can also occur when the body is in contact with the ground, apparatus or equipment. This means two sources of force are acting on the body: So long as there is a lever arm between the reaction force and the center of mass, the athlete can alter the angular momentum in their body mass, the athlete can alter the angular momentum in their body. This way the athlete can increase or reduce to amount of angular momentum. Smaller torque in the direction that you want to go. Also, the athlete can rotate about an axis that does not pass through the center of mass. There can be more than one axis of rotation. If you"re completely laid out, you have a big radius of gyration so rotating yourself up about your wrists would be pretty much impossible. You want to rotate about your hips first so you can start to create angular momentum.

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Related Questions

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When we think of a lever set up, what does FAR refer to?

Draw a basic F.A.R for each of the following and give an example of where in the body you may find each.

First class lever:

Second class lever:

Third class lever:

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13. in regards to “power” which is more powerful, muscle fibers arranged in Parallel or bipennate muscles? ___________

Why?

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15. What is the branch of FDA that controls regulation of medical devices? ____________

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A device can be something used to diagnose a disease

A device can change the chemistry of your cells

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A class III device has a high risk potential to the patient

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Cost

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None of the above

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I'm having trouble simplifying this 6 question paper. Pleaserewrite this then post in comments. thanks! just 1-5 senstences perquestion please. please!

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Cetaceans have primitive taxa thatrecords sequences of change at three critical phases:

-Initial aquatic specialization

-Evolution of filter feeding withbaleen

-Derivation of echolaction.

Divergence times in cetaceans areconducive to detection of positive selection and inactive loci.Evolutionary splits in cetacea are deep enough to provide adequatechange for statistically robust analyses of molecular evolution butare not so deep that substitution patterns are saturated andrecognition of pseudogenes is hindered.

They have an impressive fossilrecord.

Whole genomes for both cetaceans andterrestrial cetartiodactyles can illuminate transitions andcandidate loci associated with aquatic features and degenerativeevolution have been characterized by several research groups.

turtles: highly derived taxa but areancient clades and more difficult to study from a molecularperspective.

manatees: The extant diversity ofaquatic manatees is limited.

bats: have a poor fossil record.

pterosaurs (ancient winged reptiles):Lack genetic Data.

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Explain how the maximum dive capability of an extinct whalespecies can be estimated.

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Characterize the specific nucleotide sequence and functionaldifferences in ameloblastin genes between baleen whales versusother mammals.

Baleen whale a toothed whale and moredistantly related mammals with single base pair frameshiftinsertion in the baleen whale AMBN pseudogene. Clear cut molecularsignature of a shared signature of shared aquatic ancestry forhippos and whales is currently lacking. Loci related to underwatercision, deep diving and lung surfactant do not show evidence ofmolecular adapation in the common ancestor of these taxa.

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Auditory genes. Bats and odontecetshave many similar capabilities with regards to high frequency soundperception.

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Loss of functional TAS1R genes alsooccurred independently in Otariidae (sea lions) and many carnivorsmammals convergently lack the fuctional sugar taste perception geneTAS1R2

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Comparison amobg a broader taxonomicsample of geneoms can reveal learge suits of genes that haveundergone convergent recruitment and subsittuions among multipleclades of aquatic tetrapods.