PRC Technology & Digital Tools 3

Question 1

Surface EMG is used during a PRI wall supported hip flexor stretch. Which muscle activation sequence confirms the patient has achieved a posterior pelvic tilt without hip flexor dominance?

Accepted Answer

Transversus abdominis fires before rectus femoris quiets

Answer

Proper PRI technique requires deep abdominal (TA) activation to occur before the superficial hip flexors inhibit, confirming ZOA-driven pelvic repositioning.

Question 2

A digital pressure mapping platform shows a patient consistently offloading the right heel during bilateral stance. This finding is most consistent with which PRI pattern?

Accepted Answer

Left AIC with right stance phase dominance

Answer

Left AIC pattern shifts weight toward the right lower extremity during stance, causing relative right heel offloading as the pelvis rotates and the right hip extends.

Question 3

Which software-based outcome measure is most validated for tracking functional improvements in patients undergoing PRI-based postural correction?

Accepted Answer

Numeric Pain Rating Scale combined with PSFS entered in a digital form

Answer

Patient-specific functional scale (PSFS) combined with numeric pain rating, captured via digital intake forms, provides a validated, sensitive measure of functional change in musculoskeletal settings including PRI-based care.

Question 4

A PRC uses ultrasound imaging to assess diaphragm excursion during a PRI breathing technique. A normal caudal excursion of the right hemidiaphragm during inhalation is approximately:

Accepted Answer

1.5–2.5 cm during quiet breathing, up to 7–8 cm with deep breath

Answer

Normal right hemidiaphragm excursion is 1.5–2.5 cm during tidal breathing and can reach 7–8 cm during maximal inhalation when assessed with M-mode ultrasound.

Question 5

In a PRI-integrated clinical setting, which app feature would MOST help a patient perform the correct reciprocal arm/leg pattern during gait retraining at home?

Accepted Answer

Real-time metronome with auditory cueing synced to step frequency

Answer

A metronome app providing auditory cues at the target step cadence helps patients time reciprocal limb patterns during gait retraining without a clinician present.

(PRC) Postural Restoration Certified Practice Test

(PRC) Postural Restoration Certified Practice Test

PRC Technology & Digital Tools 3