da Silva Ana Paula, Dos Santos Rayele Pricila Moreira, Coertjens Patrícia Chaves, Coertjens Marcelo
a Health Sciences Center, College of Physiotherapy , Federal University of Piauí , Parnaíba , PI , Brazil.
Physiother Theory Pract. 2017 Apr;33(4):345-351. doi: 10.1080/09593985.2017.1289577. Epub 2017 Mar 10.
The Pressure Biofeedback Unit (PBU) is used to assess the transversus abdominis muscle activity in order to determine the effectiveness of segmental stabilization, but not to verify its accuracy for measuring the pressure values of breathing from transversus abdominis activation. The objective of this study was to cross-validate the PBU pressure evaluated in transversus abdominis muscle activation with the respiratory pressure assessed through manovacuometry in order to verify the extent to which the PBU can be used to indirectly evaluate the strength of the respiratory muscle in both men and women and verify the reliability of the methods.
A total of 39 healthy subjects.
Manovacuometry and Pressure Biofeedback Unit tests were performed in three days each with three replications: 1) Maximal Inspiratory Pressure; 2) Maximal Expiratory Pressure; and 3) Pressure Biofeedback Unit.
Both tests showed good reliability and low correlation between the Pressure Biofeedback Unit and Maximal Inspiratory Pressure (r = 0.40; p = 0.01) and Maximal Expiratory Pressure (r = 0.33; p = 0.04). High differences were observed between pressures and wide limits of agreement in Bland-Altman analysis.
It seems that the Pressure Biofeedback Unit is not able to effectively predict the respiratory muscles' strength as routinely evaluated through the use of the manovacuometry presenting a low cross-validation and good reliability.
压力生物反馈装置（PBU）用于评估腹横肌活动，以确定节段性稳定的有效性，但并非用于验证其测量腹横肌激活时呼吸压力值的准确性。本研究的目的是将腹横肌激活时评估的PBU压力与通过压力计评估的呼吸压力进行交叉验证，以验证PBU可用于间接评估男性和女性呼吸肌力量的程度，并验证这些方法的可靠性。
共有39名健康受试者。
在三天内分别进行压力计和压力生物反馈装置测试，各测试重复三次：1）最大吸气压力；2）最大呼气压力；3）压力生物反馈装置。
两项测试均显示出良好的可靠性，且压力生物反馈装置与最大吸气压力（r = 0.40；p = 0.01）和最大呼气压力（r = 0.33；p = 0.04）之间的相关性较低。在Bland-Altman分析中，观察到压力之间存在高度差异和广泛的一致性界限。
压力生物反馈装置似乎无法像通过压力计常规评估那样有效地预测呼吸肌力量，其交叉验证较低但可靠性良好。
