New POWERbreathe Kinetic Health KH1 provides valid and reliable measurement of MIP

Professor McConnell presented ‘Validity and reliability of maximal inspiratory pressure (MIP) measurements made using two portable proprietary devices’ at the European Respiratory Society Annual Congress 2010.

Professor Alison McConnell
Centre for Sports Medicine & Human Performance, Brunel University, Uxbridge, UK

Portable electronic measurement of MIP (maximal inspiratory pressure) has been available since the mid-1990s when an early proprietary device was found to be valid and reliable.¹ View poster >

The present study evaluated the validity and reliability of MIP measured by two modern proprietary portable devices:

• POWERbreathe Kinetic KH1
• Micro Medical RPM

Methods:

• Pressure waveforms were produced using templates generated by a Hans Rudolph breathing simulator
• 30 templates provided a range of amplitudes (30 to 190 cmH2O) and rates of pressure development
• The portable devices were also compared with a laboratory ‘Gold Standard’ (GS) measurement of MIP (Validyne)
• All instruments were exposed simultaneously to pressure waveforms in duplicate and reported MIP averaged over 1 sec
• Agreement between methods was assessed using limits of agreement (LoA). Within device agreement between duplicates was assessed using typical error

Results:

• Between and within method agreement was excellent

Conclusions:

• Both portable devices provide valid and reliable measurement of MIP

Read the Abstract >

¹ Hamnegard et al., Eur Respir J 1994; 7: 398-401

Acknowledgement
The author declares a beneficial interest in the POWERbreathe KH1

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