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SEM 2 Strength & Conditioning > Week 04 > Flashcards

Week 04 Flashcards

1
Q

_____ relationships has been demonstrated between absolute strength and total muscle cross-sectional area

A

Strong (toshio moritni)

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2
Q

Motor learning is driven by ______

A

repetition (not resistance)

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3
Q

Motor Skill Adaptations:

A
  • increase corticospinal excitability
  • decreased corticospinal inhibition
  • decreased short interval intracorticol inhibition
  • increased movement related cortical representation
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4
Q

Resistance training adaptations:

A
  • increased corticospinal excitability
  • decreased corticospinal inhibition
  • decrease short interval intracortical inhibition (brain is more confident to send impulses)
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5
Q

H reflex (hoffman reflex)….?

A

Assesses the excitability of spinal motoneurons and the synaptic efficacy of Ia afferents

Muscle spindle sends information to spinal cord when muscle is being stretched, the spinal cord sends back info to contracts the muscle

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6
Q

As stimulus gets higher and higher, H wave _____ and M wave ______ (signals start interfering)

A

H wave decreases, M wave increases

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7
Q

H wave ______ involve brain-muscle drive

A

Doesn’t

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8
Q

M wave ______ involve brain-muscle drive

A

Does

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9
Q

V wave is…

A
  • Still part of H wave
  • but voluntary (MVC) !
  • When you are doing a contraction, the voluntary drive coming down from fall is higher (amount of stimulus is higher)
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10
Q

SAID Principle stands for?

A

Specific Adaptation to Imposed Demands

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11
Q

Closed chain kinetic exercises are….

A

with a fixed point (e.g. squats, NOT leg lift)

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12
Q

Adaptation to RT seems to be quite _______

A

specific! (e.g. squats improve squats, only slightly benefit leg press)

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13
Q

________ _____ seem to be the predominant driver of early adaptations seen from RT programs.

A

Neural Adaptations

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14
Q

Increased input-output response of the motoneurons:

A
  • increased response to cortical stimulation
  • Anatomical alterations in excitatory terminals
  • Increased responsiveness to afferent volley
  • decreased presynaptic inhibition
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15
Q

______ relationships has been demonstrated between absolute strength and total muscle cross-sectional area n

A

Strong

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16
Q

If you only train one arm, what will happen to the untrained arm?

A

Untrained arm will also see strength improvements (toshio moriteni)

17
Q

Cross-sectional area increases quickly (T/F)?

A

False. Takes time, but muscle adaptations occur earlier than expected

18
Q

In the TMS, the extra stimulus in contraction is _____ among RT people, because…?

A

Lower, because they already have a higher MVC
RT: 80-100%
Untrained: 60-100%

19
Q

The V in v-wave stands for …

A

voluntary

20
Q

V-wave happens when the muscle is voluntary contracting/not contracting

A

Voluntary contracting (unlike H reflex)

21
Q

Early work suggested some evidence for H-reflex adaptation however,….

A

results are mixed

22
Q

There are ______ results observed about improvement in V-wave effects

A

Consistent

23
Q

Approx. ____% of skeletal muscle is composed of proteins

A

20%

24
Q

RT elicits hypertrophy of _____ muscle fibre types

A

ALL

25
Q

______ evidence for hyperplasia in humans

A

Little

26
Q

Hyperplasia =

A

increase CELL NUMBER (not size)

27
Q

Hypertrophy =

A

Increase muscle SIZE (not amount)

28
Q

______ allow coupling and addition of a phosophoryl group (e.g. to a lipid or protein group)

A

phosphorylation

29
Q

____ ____, enzyme that modifies other proteins via phosphorylation

A

protein kinase

30
Q

_____ = negative regulator of myoblast proliferation and differentiation (e.g. regulates hypertrophy)

A

Myostatin

31
Q

Myostatin deficiency can lead to _____ muscle mass due to not negatively regulating muscle protein synthesis

A

increase

32
Q

Why does the first training session elicit higher DOMS than when training regularly?

A

It is sarcoplasmic hypertrophy, which is in increase in fluid in cell (NOT myofibrillar hypertrophy which is increase in actin and myosin)

33
Q

Generally speaking, does increase in hormones elicit increase strength and hypertrophy adaptations?

A

Not really

34
Q

How does the Transcranial magnetic stimulation device work?

A
  1. Put magnetic device over head
  2. Find area in brain that links to biceps/finger (target area)
  3. perform MVC
  4. Device sends stimulus through that region through NS
  5. You measure the additional contraction spike of that muscle

SEM 2 Strength & Conditioning (8 decks)

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