Physical fitness Flashcards

1
Q

Definition of physical fitness

A

a measure of one’s _physical health

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2
Q

Definition of exercise

A

Physical activity that is planned, structured, and usually involves repetitive bodily movements
Designed to improve or maintain _physical fitness

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3
Q

Definition of strength

A

maximum force a muscle can generate in 1 contraction no time limit

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4
Q

Maximal _strength definition:

A

ability to perform maximal voluntary muscular contractions in order to overcome powerful external resistances

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5
Q

One Repetition Maximum definition:

A

greatest force that can be exerted during one repitition

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6
Q

Strength can be increased via:

A

myogenesis_, the development of muscular tissue.

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7
Q

How does the muscle adapt to stress?

A

synthesizes more actin and myosin making the muscle bigger and more capable of producing force

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8
Q

what is the relative strength equation?

A

Maximal Strength/Body Mass

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9
Q

Some neural mechanisms that enhance strength:

A
  1. Increase firing frequency
  2. Recruit more motor units
  3. synchronize the firing of motor units
  4. Reduce inhibitory firing
  5. Improve inter-muscular coordination
  6. Utilize Stretch reflex immediately prior to movement
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10
Q

What is the isometric state?

A

muscle force equals the load, the muscle will not change in length

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11
Q

What is the concentric_ state?

A

muscle force exceeds the load, the muscle will shorten

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12
Q

What is the eccentric_ state?

A

muscle force is less than the load, the muscle will lengthen

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