AFAA Group Fitness Instructor Test QUESTIONS AND CORRECT
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Interrelation of nervous, muscular, and skeletal systems to create movement
Kinetic chain
brain and spinal cord, coordinates activity of body parts
Central nervous system
all nerves branching off spinal cord, extending out to the body
Peripheral nervous system
sense distortion in body tissues
mechanoreceptors
mechanoreceptor that senses changes in tension
Golgi tendon organs
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mechanoreceptor that senses changes in length
muscle spindles
cumulative sensory input to the CNS from all mechanoreceptors
proprioception
connect muscle to bone, anchor to produce force, limited blood flow, slow to
repair
tendons
individual contractile units, actin and myosin filaments
sarcomeres
slow twitch - more aerobic, slower to reach maximal contraction, resistant to
fatigue
type I muscles
more anaerobic, produce more speed and strength, faster to fatigue
type ii muscles
extensibility, elasticity, irritability, ability to develop tension
behavioral properties of muscles
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stabilization muscles - core
transverse abdominus
stabilization - core
multifidus
stabilization - core
internal obliques
stabilization - core
diaphragm
stabilization - core
pelvic floor muscles
stabilization - core
external obliques
stabilization - core
quadrates lumborum
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stabilization - core
psoas major
part of general adaptation syndrome: body adapts to stimuli; progressive
improvement; 4-12 weeks
adaptation
part of general adaptation syndrome; body no longer tolerates demands of
training; adaptions may halt; overtraining risk increases
exhaustion
SAID/principle of specificity: type of stimulus placed on body determines
expected physiological outcome
specific adaptation to imposed demands principle
weight and movements placed on body
mechanical specificity
specific exercises using different speeds
neuromuscular specificity
energy demand placed on body
metabolic specificity
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