Intratester reliability of new simple respiratory muscle strength testing device

Abstract

The purpose of the present study was to invent a new simple respiratory muscle strength testing device and investigated the reliability. This equipment can measure the pressure of respiratory muscles strength in the range of 0 to 184 cmH₂O and can be show in digital form through the 7-segment monitor. This device was investigated the reliability in thirty healthy male participants by respiratory muscle strength test 3 times for consecutive 3 days. The result demonstrated that intratester reliability for maximum inspiratory pressure and maximum expiratory pressure was 0.99 and 0.94, respectively by using Intraclass Correlation Coefficient (ICC) analysis. The satisfactions of physiotherapist on the simple respiratory muscles strength testing device were average good level (4.07). In conclusion, the new simple respiratory muscle strength testing device can be measure the respiratory muscle strength and high reliability.