CP and resistance training

Question 1

what is different in CP muscles

Answer 1

• structure
• contractile and composition properties
• central and peripheral neuromuscular activation patterns

makes relative intensity greater

Question 2

what is different in CP muscles

Answer 2

• structure
• contractile and composition properties
• central and peripheral neuromuscular activation patterns

makes relative intensity greater

Question 3

what muscles are most impacted in kids with CP

Answer 3

• hamstrings
• dorsiflexors
• plantar flexors
• hip abductors

upwards of 50% strength deficits

Question 4

CP muscles of children with CP have high proportions of

Answer 4

• fat, collagen, and scar tissue - noncontractile tissues
• 30% of tib ant, 100% gastroc, 400% soleus

Question 5

knee flexors and extensors are [ ] in CP muscles

Answer 5

• fatigue resistant - indicates different fiber type
• also greater functional limitations

Question 6

greater fatigue resistance was predicted by

Answer 6

• greater levels of agonist spasticity, co-contraction, muscle weakness
• this is explained by T1 muscle fibers, altered motor unit recruitment, decreased central drive

Question 7

children with CP produce less [ ] than peers despite being more fatigue resistant

Answer 7

• force
• still working at high intensity to achieve functional tasks and level of force likely insufficient to achieve/sustain tasks

Question 8

[ ] is a strong predictor of function in CP

Answer 8

• strength - accounts for 69% of variance in function
• more related to muscle performance and gait speed than muscle tone
• reductions in strength were associated with negative indicators of function across scales

spasticity has neglible effects on functional ability

Question 9

muscles change the amount of force they can produced based on

Answer 9

• speed of contraction
• power is maximized at moderate velocities
• at maximal or no velocity, power = 0
• (isometric contraction –> F output max)

if you mvoe quickly, you can’t produce maximal force

Question 10

muscles change the amount of force they can produced based on

Answer 10

• speed of contraction
• power is maximized at moderate velocities
• at maximal or no velocity, power = 0
• (isometric contraction –> F output max)

if you mvoe quickly, you can’t produce maximal force

Question 11

rate of force development is diminished by [ ] in quadriceps of children with CP and [ ] in the gastroc

Answer 11

• 70% in quads, 200% in gastroc
• need to generate F > body mass to move quickly - power generation is related to function and participation as is maximal strength

due to altered motor unit, fiber type, sarcomeres

Question 12

rate of force development is diminished by [ ] in quadriceps of children with CP and [ ] in the gastroc

Answer 12

• 70% in quads, 200% in gastroc
• need to generate F > body mass to move quickly - power generation is related to function and participation as is maximal strength

due to altered motor unit, fiber type, sarcomeres

Question 13

power training with CP

Answer 13

• traditional: 3x8 at 80% improved strength over a variety of speeds of contraction
• velocity-dependent: resulted in impved functional performance - specificty matters! saw muscle structural alterations in targeted muscles

Question 14

when treating kids with 14 weeks usual care, 14 weeks group power-based resistance training, 14 weeks usual care

Answer 14

• variables improved after resistance training but not usual care periods

Question 15

[ ] is a primary driveer of functional limitation in people with CP

Answer 15

muscular weakness

Question 16

safety concerns with peds

Answer 16

Question 17

power vs strength

Answer 17