top of page



Pressure Biofeedback Unit Buy

Objective: The purpose of this study was to assess examiners' intrarater and interrater reliability to use a pressure biofeedback unit (PBU) during 6 lower limb movement tests based on Movement System Impairment classification model for low back pain (LBP) in people with nonspecific LBP.

pressure biofeedback unit buy

This lack of stabilization may be clinically detected using an active straight leg raising(ASLR) test, as the inability to control lumbar rotation and the mediolateral load transfer(centre of pressure displacement in the same direction) are indicators of instability inthis region10,11,12,13).

In order to reduce lumbar spine instability and therefore diminish pain, several studieshave suggested segmental stabilization training, involving a range of exercises from localsegmental control exercises to open-chain segmental control exercises1, 14). Given thedifficulty of perceiving an isolated contraction of the transversus abdominis required forthe local segmental control exercises, biofeedback strategies using electromyography andultrasound imaging have been used. However, because these strategies are difficult to applyin many clinical environments, the use of a pressure biofeedback unit (PBU) has beensuggested. This instrument consists of a non-elastic air bladder that when placed betweenthe supporting surface and the lumbar spine, allows detection of pressure fluctuationsinherent to movements in that region1, 15).

The PBU is by nature a biofeedback instrument and most of the scientific evidence isdirected for assessing transversus abdominis muscle function in a prone position16,17,18,19).The relation between this instrument and the transversus abdominis has also been tested in asupine position by Grooms et al.15) usingultrasound imaging, employing a selective contraction of this muscle (the drawing-inmanoeuvre). Yet this study found no relation between them, indicating the need for a moredemanding task.

The immediate effect of biofeedback on abdominal muscle activity and pelvic rotation wasonly observed by Noh et al.21) during anactive straight leg raising test in women with low back pain. Although not the focus of theinvestigation, they observed that using a PBU for biofeedback lead to a decrease in pelvicrotation with no significant changes in abdominal muscle activity. However no PBU data wascollected to see how much pressure variation differed from performing with and without PBUbiofeedback, as well as to test if a relation between PBU and abdominal muscle activityexists.

The ASLR was then performed with pressure biofeedback. The instrument display waspositioned right in front of the participant, and they were asked to perform an ASLR whiletrying to maintain the pressure steady at 40 mmHg. A training period was allowed until theywere able to perform the task with pressure disturbances bellow 5 mmHg, and without usingthe Valsalva manoeuvre. If a disturbance of more than 5 mmHg was detected, the procedure wasrepeated.

However, this device in a clinical context is used mainly as a biofeedback instrument1) rather than a way to measure muscle activityand COP displacement. In that manner, when used as biofeedback during an ASLR, an increasein all abdominal muscle activity and a decrease in mediolateral COP displacement wereobserved, which could be interpreted as an increase in lumbopelvic stability9, 10, 31). These two results may actually beconnected, because it is possible that an increase in muscle activation could bettercounterbalance the torque imparted by the limb and prevent pelvic motion32). Also, the fact that all abdominal musclesincreased their activation may reinforce the idea that lumbopelvic stabilization is achievedthrough synergy between local and global muscles. Local muscles are more responsible forindividual spinal segment stabilization and global muscles have better mechanical advantagefor exerting control over lumbopelvic axial rotation in the transverse plane during activestraight-leg raise1, 32, 33).

Similar results were found by Noh et al.21) during an ASLR with a PBU as a biofeedback tool. They observed adecrease in pelvic rotation but, unlike the present study, found no significant increases inabdominal muscle activity to support the decreased pelvic rotation, describing just a slightincrease in average muscle activation. The differences in the muscle activity results couldbe related to different EMG normalization methods; however, the values were quite similar inalmost every muscle at baseline. Another possible reason could be related to the magnitudeof PBU variation during biofeedback, which was not collected in this study. Hypothetically,to achieve a smaller PBU variation during an ASLR with biofeedback, a greater muscularactivation would be needed. The abdominal muscle activity increase together with a pelvicrotation reduction was found also during ASLR in a research conducted by Park et al.32), but instead of controlling pelvic motionwith a PBU as biofeedback, they used the pelvic control method that uses a self-biofeedbackscheme by palpating and controlling the position of the anterior iliac spines. Despitesimilar effects on lumbopelvic stability, the comparison between the two methods will needto be conducted in a future study since different outcomes were used.

Despite the adequate sample size to detect the effect of using the PBU as a biofeedbackstrategy, a bigger and more heterogeneous sample could have strengthened the correlationbetween PBU, abdominal muscle activity, and mediolateral COP displacement. As such, it isimportant to understand that these findings may not be generalized to individuals with lowback pain who do not meet the selection criteria. A kinematic analysis should also be addedfor a better understanding of the relationship between the kinetic and kinematic variables,especially the pelvic tilt motion. A more equal proportion of males and females would alsoimprove the study. Future research may study the effect of a therapeutic exerciseintervention on individuals with low back pain with and without a PBU as a biofeedbackstrategy.

To identify effective methods of training the abdominal muscles for trunk stabilization,the muscle activities of the abdominal muscles of 20 subjects were measured using a pressurebiofeedback unit while they performed the drawing-in maneuver in supine and standingpositions. The results show the muscle activities were significantly higher in the standingposition for all of the four muscles: the rectus abdominis, the external oblique abdominis,the internal oblique abdominis, and the transverse abdominis. The standing position adoptedin this study was similar to the position adopted in squat exercises. During squatexercises, the muscle activities of the lower extremity muscles and the erector spinalmuscles are higher than those of other muscles. In the current study, the activities of theabdominal muscles may have increased in the standing position to maintain symmetric balance,making them higher than those in the supine positions. When selecting positions tostrengthen muscles for lumbar stabilization in the acute phase of low back pain, a supineposition is selected first to implement active spinal control training, followed by a proneposition, a crawling position, a sitting position, and a standing position in order ofprecedence4). Patients with weak musclescan perform exercises in supine positions. However, supine positions are not suitable forpatients who need more intensive training or resistance training. Therefore, for patientswith lower extremity muscle strength who require more intensive training and who are able tostand up, we consider training in standing positions would be more effective than trainingin supine positions.

The STABILIZER, designed by physiotherapists, is a simple device which registers changing pressure in an air filled pressure cell. This allows body movement, especially spinal movement, to be detected during exercise.

The STABILIZER is principally used for exercises that focus on the protection and stabilization of the joints. Research has shown these types of exercise are especially important for the prevention and treatment of low back and neck pain (of various pathologies). The STABILIZER is used to monitor and provide biofeedback during exercise. This promotes effective exercise to improve back and neck pain.

The exercise stabilizer is an easy to use device that provides a visual indication of working the correct postural muscles, in the right manner, when performing specific exercises. For prevention and treatment of back pain, neck pain, and to improve core stability. Provides muscle re-education using biofeedback.

The measuring range is 0-200 mmHg analog pressure with an accuracy of +/- 3 mmHz pressure. With continuous and proper use, you can improve your quality of life by improving muscle function, decrease pain symptoms, and subsequently decrease anti-inflammatory medications.

We have detailed in the exercise section the importance of specific neck exercises. The main one we focus is the craniocervical or nodding exercise. This is a simple, but finesse motion, but is critical in alleviating postural related neck pain and in curve restoration. The exercise stabilizer is a biofeedback device that greatly enhances efficiency in performing this, as well as other specific exercises.

We measured the trunk muscles activities at different PBU pressure values, which allows the individual to estimate trunk muscle contraction via PBU. Clinicians may be able to confer the data obtained through EMG recordings to adjust the exercise intensity of PBU training accordingly.

The quantitative measurement tool of MF and TA plays a crucial role in assessing muscle activation pattern and clinical effectiveness of SSEs. The gold-standard to measure the activity of deep local trunk muscles is by fine-wire electromyography [7, 8]. However, factors such as pain, discomfort and risk of infection limit its clinical application as routine outcome measure. Indirect measurements of MF and TA muscles functions rely on electromyography (EMG) and ultrasound imaging. Surface EMG also has the limitation of cross-talk with other muscles that are in close proximity [8]. High cost and inconvenient hinders the common use of ultrasound imaging in clinical practice and the assessment of ultrasound is often limited by the position of the subject [10]. In clinical and research setting, PBU is a non-invasive, low-cost and convenient to use device that has been used to monitor the change of pressure as a mean to estimate the muscle activation of the MF and TA muscles during specific maneuverer [10, 11]. An inability to maintain the required pressure while performing the posture is reflective of an inability to maintain abdominal muscle contraction, resulting in uncontrolled movement and instability of the lumbar spine [12]. The validity of such approach was to investigate in early literature which reported moderate correlation between changes and PBU pressure and EMG activities [13]. The inter- and intra-examiner reproducibility of PBU in measuring TA muscle activity in people with cLBP [14] and healthy [11] individuals was reported to be excellent. 041b061a72


いわゆる何でもやるコンサルティングファーム?? 総合系(監査法人系など)コンサルティングファーム関係者(アクセンチュア・...
グループページ: Groups_SingleGroup
bottom of page