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The nasal response to isometric exercise

A D Wilde1, J A Cook, A S Jones

  • 1Department of Otorhinolaryngology, Royal Liverpool University Hospital, UK.

Clinical Otolaryngology and Allied Sciences
|August 1, 1995
PubMed
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Isometric exercise causes nasal obstruction on the side of exertion, while the opposite nasal passage widens. This reflex response in nasal cross-sectional area is side-specific.

Area of Science:

  • Physiology
  • Otolaryngology
  • Exercise Science

Background:

  • Cardiovascular responses to isometric exercise are well-documented.
  • Nasal mucosal responses to isometric exercise remain less understood.
  • Investigating nasal changes during physical exertion is crucial for understanding respiratory physiology.

Purpose of the Study:

  • To document the nasal mucosal response to isometric exercise in healthy individuals.
  • To investigate changes in nasal cross-sectional area during sustained handgrip.
  • To determine if these nasal responses are side-specific.

Main Methods:

  • Ten healthy individuals without nasal disease or allergies participated.
  • Subjects performed 5-minute handgrip at 30% maximal voluntary effort.

Related Experiment Videos

  • Nasal cross-sectional area was measured using acoustic rhinometry, with tests repeated on both sides.

    • Main Results:

    • Isometric exercise significantly reduced nasal cross-sectional area on the exercising side (median change = 0.09 cm², P < 0.01).
    • The contralateral nasal passage showed a significant increase in cross-sectional area (median change = 0.35 cm², P = 0.01).
    • No significant differences were observed when handgrip was applied to the opposite side.

    Conclusions:

    • Isometric exercise induces nasal obstruction, a side-specific reflex.
    • Both the afferent and efferent pathways of this nasal reflex appear to be side-specific.
    • These findings highlight a novel physiological response of the nasal mucosa to physical exertion.