Ann Rehabil Med.  2015 Jun;39(3):360-365. 10.5535/arm.2015.39.3.360.

Effects of Incentive Spirometry on Respiratory Motion in Healthy Subjects Using Cine Breathing Magnetic Resonance Imaging

• Kotani T
• Akazawa T
• Sakuma T
• Nagaya S
• Sonoda M
• Tanaka Y
• Katogi T
• Nemoto T
• Minami S

• KMID: 2165638
• DOI: http://doi.org/10.5535/arm.2015.39.3.360

Abstract

OBJECTIVE
To investigate the effectiveness of incentive spirometry on respiratory motion in healthy subjects using cine breathing magnetic resonance imaging (MRI).
METHODS
Ten non-smoking healthy subjects without any history of respiratory disease were studied. Subjects were asked to perform pulmonary training using incentive spirometry every day for two weeks. To assess the effectiveness of this training, pulmonary function tests and cine breathing MRI were performed before starting pulmonary training and two weeks after its completion.
RESULTS
After training, there were significant improvements in vital capacity (VC) from 3.58+/-0.8 L to 3.74+/-0.8 L and in %VC from 107.4+/-10.8 to 112.1+/-8.2. Significant changes were observed in the right diaphragm motion, right chest wall motion, and left chest wall motion, which were increased from 55.7+/-9.6 mm to 63.4+/-10.2 mm, from 15.6+/-6.1 mm to 23.4+/-10.4 mm, and from 16.3+/-7.6 mm to 22.0+/-9.8 mm, respectively.
CONCLUSION
Two weeks of training using incentive spirometry provided improvements in pulmonary function and respiratory motion, which suggested that incentive spirometry may be a useful preoperative modality for improving pulmonary function during the perioperative period.

Keyword

Spirometry; Respiratory function tests; Magnetic resonance imaging

MeSH Terms

Diaphragm
Magnetic Resonance Imaging*
Motivation*
Perioperative Period
Respiration*
Respiratory Function Tests
Spirometry*
Thoracic Wall
Vital Capacity

Figure

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  Fig. 1 Right midsagittal maximal inspiratory (A) and expiratory (B) images. We drew a line tangent to the lung apex and perpendicular to the vertical magnetic resonance imaging frame. The distances from this line to the diaphragm at its highest point are defined as the maximum dimension (Di) or minimum dimension (De), respectively.

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  Fig. 2 Lower axial (at the level of the center of the T10 vertebra) maximal inspiratory (A) and expiratory (B) images.

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  Fig. 3 Pre-training (A) and post-training (B) right midsagittal maximal inspiratory images in a healthy subject. Chest wall and diaphragm motions are increased after training.

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