The impact of high-frequency chest wall oscillation therapy on spirometry values (Forced Expiratory Volume, Forced Vital Capacity, Peak Expiratory Flow, Forced Expiratory Flow and Tidal Volume is investigated during use of several products and comparing to baseline values.
The study will be broken into three (3) arms: * AffloVest® \& The Vest® * AffloVest® \& inCourage® * AffloVest® \& SmartVest® Subjects will be randomly assigned to an arm. Within each arm, the order of products will be also randomized. Baseline spirometry (Forced Expiratory Volume (FEV1), Forced Vital Capacity (FVC), Peak Expiratory Flow (PEF), Forced Expiratory Flow (FEF25-75%) and Tidal Volume (TV)) will be taken at the beginning, middle and end of each series of measurements with each subject, without any device on the subject. A product (AffloVest or Compressor-based vest) will be placed onto subject and turned ON to the highest frequency and intensity settings. Then the subject will be given a certain period of time to adjust and spirometry measurements will then be repeated, then The product will be removed and the subject will be allowed a recovery period, then the other product will be placed on the subject, turned ON and spirometry measurements will repeated.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
32
High-frequency chest wall oscillation vest
High-frequency chest wall oscillation vest
High-frequency chest wall oscillation vest
PDS Research
Kissimmee, Florida, United States
TV
Tidal Volume, the lung volume representing the normal volume of air displaced between normal inhalation and exhalation when extra effort is not applied
Time frame: 30 minutes
PEF
Peak Expiratory Flow, a person's maximum speed of expiration
Time frame: 30 minutes
FVC
Forced Vital Capacity, the amount of air which can be forcibly exhaled from the lungs after taking the deepest breath possible
Time frame: 30 minutes
FEV1
Forced Expiratory Volume, the volume of air that can be forced out in one second after taking a deep breath
Time frame: 30 minutes
FEF25-75%
Forced Expiratory Flow (25-75%), the peak expiratory flow at 25 - 75% FVC
Time frame: 30 minutes
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High-frequency chest wall oscillation vest