Diaphragmatic mobility in healthy subjects during incentive spirometry with a flow-oriented device and with a volume-oriented device

J Bras Pneumol. Nov-Dec 2010;36(6):738-45. doi: 10.1590/s1806-37132010000600011.
[Article in English, Portuguese]

Abstract

Objective: To compare the diaphragmatic mobility of healthy subjects during incentive spirometry with a volume-oriented device, during incentive spirometry with a flow-oriented device, and during diaphragmatic breathing. To compare men and women in terms of diaphragmatic mobility during these three types of breathing exercises.

Methods: We evaluated the pulmonary function and diaphragmatic mobility of 17 adult healthy volunteers (9 women and 8 men). Diaphragmatic mobility was measured via ultrasound during diaphragmatic breathing and during the use of the two types of incentive spirometers.

Results: Diaphragmatic mobility was significantly greater during the use of the volume-oriented incentive spirometer than during the use of the flow-oriented incentive spirometer (70.16 ± 12.83 mm vs. 63.66 ± 10.82 mm; p = 0.02). Diaphragmatic breathing led to a greater diaphragmatic mobility than did the use of the flow-oriented incentive spirometer (69.62 ± 11.83 mm vs. 63.66 ± 10.82 mm; p = 0.02). During all three types of breathing exercises, the women showed a higher mobility/FVC ratio than did the men.

Conclusions: Incentive spirometry with a volume-oriented device and diaphragmatic breathing promoted greater diaphragmatic mobility than did incentive spirometry with a flow-oriented device. Women performed better on the three types of breathing exercises than did men.

Trial registration: ClinicalTrials.gov NCT00997737.

Publication types

  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Analysis of Variance
  • Breathing Exercises*
  • Cross-Over Studies
  • Diaphragm / diagnostic imaging
  • Diaphragm / physiology*
  • Female
  • Humans
  • Lung / physiology*
  • Male
  • Sex Factors
  • Spirometry / instrumentation
  • Ultrasonography
  • Young Adult

Associated data

  • ClinicalTrials.gov/NCT00997737