Measurement properties of the pressure biofeedback unit in the evaluation of transversus abdominis muscle activity: a systematic review

The Influence of Varying Hip Angle and Pelvis Position on Muscle Recruitment Patterns of the Hip Abductor Muscles During the Clam Exercise

“…12 The pressure biofeedback unit consisted of an inflatable cuff connected to a pressure gauge and inflation device. Once the bag was inflated, the lumbar spinous processes were palpated and a rigid ruler was placed along the length of the spine to visually establish that the spine was straight in the coronal plane.…”

Development of a Core-Stability Model: A Delphi Approach

“…These assessment techniques include McGill's 33 timed side bridge, timed extensor endurance, timed prone bridge, and timed abdominalendurance test; Biering-Sorensen test 31 ; leg-lowering 19,30 ; Kendall's trunk curl 30 ; assessing hip internal and external rotation using a handheld dynamometer 29 ; and assessing change in stabilizer unit pressure while lying supine and moving arms and legs. 37 The majority of techniques were identified by the experts as their own clinical tests that they acquired throughout their years of experience, such as the squat, lunge, postural assessment, total body assessment, assessing the ability to maintain a posterior pelvic tilt while moving lower extremities, and maintaining stable core and balance while seated on Swiss ball and performing movement patterns.…”

“…In addition to the inconsistently identified definition and components, there have been numerous techniques that have been advocated for the assessment of core stability. Tests such as the straight-leg-lowering test 19,30 ; the Biering-Sorensen test 31 ; the active straight-leg-raise test 32 ; the trunk curl 30 ; the McGill 33 extensor-endurance test, timed prone-bridge test, and side-bridge test; and tests that incorporate pressure biofeedback units 19,[34][35][36][37][38] have all been discussed in the literature. Many of these techniques, however, are missing concise and consistent protocols, as well as evidence of validity.…”

Comparison of Core Muscles Activation and Endurance in Asymptomatic and Patients With Low Back Pain

“…Movement or change in position causes volume changes in pressure bag, which is registered by this device. (40,41,42) Procedure:…”