PWR Neurological Rehabilitation Techniques 2 — Questions and Answers
Question 1: Which neuroplasticity principle underlies the PWR!Moves approach to Parkinson's rehabilitation?
- Use it or lose it — repetitive task-specific practice strengthens neural pathways (Correct answer)
- Compensation — teaching alternative movement strategies to bypass damaged circuits
- Pharmacological priming — timing exercise to dopamine medication peaks only
- Passive stretching — lengthening muscles to restore basal ganglia output
Correct answer: Use it or lose it — repetitive task-specific practice strengthens neural pathways
PWR!Moves is grounded in 'use it or lose it' neuroplasticity, where intensive, repetitive, task-specific practice reinforces threatened motor circuits.
Question 2: What is the primary role of the supplementary motor area (SMA) in Parkinson's disease motor deficits?
- It generates involuntary tremor signals that override voluntary movement
- It normally drives internally cued movement but is underactivated due to dopamine loss (Correct answer)
- It compensates fully for basal ganglia dysfunction without external cueing
- It controls only eye movements, making it unaffected by dopaminergic loss
Correct answer: It normally drives internally cued movement but is underactivated due to dopamine loss
The SMA relies on dopaminergic input for internally cued movements; its underactivation in PD explains why external cues can partially substitute for lost internal drive.
Question 3: A PWR therapist uses a metronome during gait training. Which mechanism best explains the therapeutic benefit?
- Auditory cueing bypasses deficient internal timing via the cerebellum and premotor cortex (Correct answer)
- The metronome increases dopamine synthesis in the substantia nigra
- Rhythmic sound suppresses freezing by activating the subthalamic nucleus inhibition
- It distracts the patient from gait, allowing automatic walking to resume
Correct answer: Auditory cueing bypasses deficient internal timing via the cerebellum and premotor cortex
Rhythmic auditory stimulation provides an external timing signal processed via cerebellar-premotor pathways, compensating for impaired internal rhythm generation.
Question 4: During PWR!Up training, which biomechanical principle is most emphasized to counteract axial rigidity?
- Spinal extension and anti-gravity postural activation (Correct answer)
- Trunk flexion to lower the center of mass for stability
- Lateral weight shifting to stimulate the vestibular system
- Cervical rotation to activate proprioceptive reflexes
Correct answer: Spinal extension and anti-gravity postural activation
PWR!Up focuses on spinal extension and anti-gravity muscle activation to counteract the characteristic flexed posture caused by axial rigidity in PD.
Question 5: Which outcome measure is most appropriate for tracking dual-task cognitive-motor performance in Parkinson's rehabilitation?
- Berg Balance Scale alone
- Timed Up and Go with a secondary cognitive task (TUGcog) (Correct answer)
- Unified Parkinson's Disease Rating Scale motor subsection only
- 10-Meter Walk Test at comfortable speed without distraction
Correct answer: Timed Up and Go with a secondary cognitive task (TUGcog)
The TUGcog adds a simultaneous cognitive task to the standard TUG, capturing the dual-task interference that significantly affects functional mobility in PD.
Question 6: A patient with PD experiences festination (involuntary acceleration of gait). Which PWR intervention strategy best addresses this?
- Amplitude training with large, deliberate steps using attentional focus (Correct answer)
- Strengthening hip flexors to increase stride cadence further
- Backward walking to reverse the festination pattern
- Passive range-of-motion exercises for the ankles
Correct answer: Amplitude training with large, deliberate steps using attentional focus
Amplitude-based training (as in LSVT BIG principles integrated in PWR) teaches large, deliberate steps with conscious attention to override festination.
Question 7: Which feature of PWR!Rock distinguishes it from standard weight-shifting exercises in neurological rehabilitation?
- It incorporates whole-body rotational movements targeting axial mobility and postural righting reactions (Correct answer)
- It focuses exclusively on upper extremity reaching tasks in sitting
- It uses vibration platforms to stimulate the vestibular system passively
- It restricts movement to the sagittal plane to reduce fall risk
Correct answer: It incorporates whole-body rotational movements targeting axial mobility and postural righting reactions
PWR!Rock emphasizes whole-body rotational and rocking movements that challenge axial mobility and stimulate postural righting reactions relevant to PD motor control.
PWR Neurological Rehabilitation Techniques 2
Which neuroplasticity principle underlies the PWR!Moves approach to Parkinson's rehabilitation?