Title

Effects of Breathe RightRTM Nasal Strips on measures of performance in aerobically trained males

Date of Award

2000

Availability

Article

Degree Name

Doctor of Philosophy (Ph.D.)

Department

Exercise and Sport Sciences

First Committee Member

Arlette C. Perry, Committee Chair

Abstract

The Breathe RightRTM Nasal Strip works by lifting and mechanically expanding the walls of the nasal valve to reduce nasal airflow resistance and improve nasal breathing. The purpose of this study was to determine if the BRNS improves measures of pulmonary function and physiological measures of aerobic performance in aerobically-trained males and to determine if reductions in nasal airflow resistance are related to improvements in pulmonary function and aerobic performance. Twenty-nine subjects completed resting pulmonary function tests and a graded exercise tests to maximum on three different days under three testing conditions: BRNS, placebo strip, and control. Subjects attained significantly higher values for maximum minute ventilation (V˙Emax) under the BRNS condition when compared to placebo strip and control conditions indicating increased ventilation volumes at maximum exercise. Subjects attained significantly higher values for all three respiratory threshold (RT) variables (oxygen consumption at RT [V˙O2 at RT], percent maximum oxygen consumption at RT [%V˙O2max at RT], and heart rate at RT [HR at RT]) while wearing the BRNS when compared to placebo strip and control conditions indicating they reached RT at a higher workload. Subjects labeled high responders (change in nasal minimum cross-sectional area [NCSA] ≥30%) were able to attain significantly higher V˙O2max levels while wearing the BRNS. The degree of change in NCSA was positively correlated with improvements in V˙O2max and V˙O2 at RT indicating that larger changes in NCSA may lead to larger improvements in these two measures of aerobic performance. A device such as the BRNS that mechanically expands the nasal valve area and may improve measures of aerobic performance could provide a safe alternative to other commercial decongestants.

Keywords

Health Sciences, Recreation

Link to Full Text

http://access.library.miami.edu/login?url=http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:9972538