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CSCS Prep > Chapter 4 - Biomechanics of Resistance Exercise > Flashcards

Chapter 4 - Biomechanics of Resistance Exercise Flashcards

203
Q

anatomical/practical example of 1st class lever.

A

see-saw;the forearm during elbow extension against resistance (tri extensions)

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204
Q

anatomical/practical 2nd class lever

A

wheelbarrow- prac plantar flexion of the foot- ana

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205
Q

fulcrum/force theory for 1st class levers

A

force is opposite sides of fulcrum

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206
Q

fulcrum/force theory for 2nd class levers

A

force on same side of fulcrum, muscle force has bigger lever than the resistive force

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207
Q

fulcrum/force theory for 3rd class levers

A

force on same side of fulcrum, muscle force has a shorter lever than the resistive force

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208
Q

radiate muscle example

A

Gluteus Medius

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209
Q

longitudinal muscle example

A

rectus abdominus

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210
Q

fusiform muscle example

A

biceps brachii

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211
Q

multipennate muscle example

A

deltoid

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212
Q

bipennate muscle example

A

rectus femoris

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213
Q

unipennate muscle example

A

tibialis posterior

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214
Q

muscle generates the greatest force at its _________ length.

A

resting

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215
Q

body size classic formula

A

load lifted __________ body weight to the 2/3 power.

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216
Q

surface drag results from

A

the friction of a fluid passing along a surface

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217
Q

form drag results from

A

the way in which a fluid presses against the front or rear of an object passing through it.

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218
Q

lordotic back meaning

A

slightly arched

219
Q

kyphotic back meaning

A

naturally s shaped slightly rounded back

220
Q

muscles of the rotator cuff.

A

supraspinatus, infraspinatus, subscapularis, and teres minor

221
Q

sagittal plane:

A

slices body into left and right planes

222
Q

frontal plane:

A

slices body into front and back

223
Q

transverse plane:

A

upper and lower body sections

224
Q

which of the following best describes a knee joint?

synovial

cartilaginous

ball and socket

pivot

A

synovial

225
Q

which of the following is the definition of power?

force x velocity

mass x acceleration

torque x time

force x distance

A

force x veloctiy

226
Q

to compare performances of olympic weights lifters of different body weights, the classic formula divides the load lifted by the athletes:

body weight

body weight squared l

ean body weight body

weight to the two-thirds power

A

body weight to the two-thirds power

227
Q

during a free weight exercise, muscle force varies with which of the following?

perp. distance from the weight to the body point

joint angle movement

acceleration movement

velocity squared

A

perp distance / movement acceleration

228
Q

a vertical jump involved knee hip and should movement primarily in which plane?

sagittal

perpendicular

frontal

transverse

A

sagittal

229
Q

An athlete is performing concentric isokenetic elbow flexion and extension. which of the following types of levers occur at the elbow during this exercise?

1st

2nd

3rd

A

1st and 3rd

230
Q

________ joints operate as hinges and move in one place of motion.

A

uniaxial

231
Q

The _____ and _______ are examples of biaxial joints.

A

ankle and wrist

232
Q

3rd class lever anatomical and pracitcal example

A

the forearm; elbow flexion against resistance (biceps curl)

233
Q

_________ ________ is the objects rotational speed, measured in radians per second.

A

angular velocity

234
Q

rotational work = _____ * _______

A

torque * angular displacement

235
Q

Muscle directly involved in movement, also known as prime mover is __________.

A

agonist

236
Q

A muscle that can slow down or stop the action is known as ___________.

A

antagonist

237
Q

muscle acting in assistance to stabilize the main muscles being used _________.

A

synergist

CSCS Prep (24 decks)

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