Biomaterial Database

Inspiratory muscle training protocol using a pressure threshold device: effect on dyspnea in chronic obstructive pulmonary disease. 1999

M A Nield

School of Nursing and Department of Medicine, University of Washington, USA.

OBJECTIVE To evaluate the ability of patients with chronic obstructive pulmonary disease (COPD) to accomplish 6 weeks of inspiratory muscle training (IMT) using a pressure threshold device, and to observe how the training affected inspiratory muscle strength and dyspnea. METHODS Pilot study comparing baseline values with posttest values. METHODS Four adults with severe COPD (the mean of the forced expiratory volume in 1 second [FEV1] was 28% of predicted value). METHODS Daily IMT sessions of 5 to 30 minutes' duration and weekly training load increments of -2 to -4cmH2O over a 6-week period with the training device at loads of >30% of baseline maximal inspiratory pressure (PImax). METHODS Dyspnea measures were Mahler's Baseline and Transition Dyspnea Index and the Borg category-ratio scale administered during a submaximal exercise protocol. RESULTS All subjects tolerated the training load, improved their inspiratory muscle strength, and reported reduced dyspnea. CONCLUSIONS Using a constant-load pressure threshold device to attain loads of >30% of the patient's baseline PImax is a feasible way to accomplish inspiratory muscle training in adults with severe COPD.

UI	MeSH Term	Description	Entries
D008173	Lung Diseases, Obstructive	Any disorder marked by obstruction of conducting airways of the lung. AIRWAY OBSTRUCTION may be acute, chronic, intermittent, or persistent.	Obstructive Lung Diseases,Obstructive Pulmonary Diseases,Lung Disease, Obstructive,Obstructive Lung Disease,Obstructive Pulmonary Disease,Pulmonary Disease, Obstructive,Pulmonary Diseases, Obstructive
D008297	Male		Males
D010865	Pilot Projects	Small-scale tests of methods and procedures to be used on a larger scale if the pilot study demonstrates that these methods and procedures can work.	Pilot Studies,Pilot Study,Pilot Project,Project, Pilot,Projects, Pilot,Studies, Pilot,Study, Pilot
D011312	Pressure	A type of stress exerted uniformly in all directions. Its measure is the force exerted per unit area. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)	Pressures
D012046	Rehabilitation	Restoration of human functions to the maximum degree possible in a person or persons suffering from disease or injury.	Habilitation
D012119	Respiration	The act of breathing with the LUNGS, consisting of INHALATION, or the taking into the lungs of the ambient air, and of EXHALATION, or the expelling of the modified air which contains more CARBON DIOXIDE than the air taken in (Blakiston's Gould Medical Dictionary, 4th ed.). This does not include tissue respiration (	Breathing
D012132	Respiratory Muscles	These include the muscles of the DIAPHRAGM and the INTERCOSTAL MUSCLES.	Ventilatory Muscles,Respiratory Muscle,Muscle, Respiratory,Muscle, Ventilatory,Muscles, Respiratory,Muscles, Ventilatory,Ventilatory Muscle
D004417	Dyspnea	Difficult or labored breathing.	Orthopnea,Platypnea,Recumbent Dyspnea,Rest Dyspnea,Trepopnea,Breathlessness,Shortness of Breath,Breath Shortness,Dyspnea, Recumbent,Dyspnea, Rest,Dyspneas, Rest
D004867	Equipment Design	Methods and patterns of fabricating machines and related hardware.	Design, Equipment,Device Design,Medical Device Design,Design, Medical Device,Designs, Medical Device,Device Design, Medical,Device Designs, Medical,Medical Device Designs,Design, Device,Designs, Device,Designs, Equipment,Device Designs,Equipment Designs
D005260	Female		Females