Current Issue
Volume: 38
Number: 4
Index: December 2010
Clinical Focus:Respiratory Care
Editorial Calendar
December 2010
Clinical Focus: Respiratory Medicine
  • Asthma and the athlete
    • Vocal cord dysfunction
    • Exercise-induced asthma
    • Exercise-induced bronchospasm
  • COPD
    • Obesity and COPD
    • Relationship between COPD and nutrition intake
  • Treatment options for steroid-induced osteoporosis in men
  • Treatments for asthma
    • Bronchodilators, anticholinergics
    • Corticosteroids
    • Metered-dose vs other types of inhalers
  • Respiratory infections in winter sports athletes
  • Asthma in elite athletes
  • Pulmonary rehabilitation and physical activity
  • Fitness and long-term oxygen therapy/lung transplantation
  • Airflow function and the metabolic syndrome
View More
Submission deadline: November 05
Fast-Track deadline: November 15
Fast-Track
About
Fast-Track peer review is available for those papers requiring immediate review (for an additional fee). Complete peer review is finalized in 1-2 weeks and comments are provided to the author within 72 hours of their receipt by the editorial office. Authors are asked to submit a revised manuscript within 10-12 days. Accepted manuscripts are processed within 2-3 weeks, published online within 3 business days of final author approval, and in print in the next available issue.
Submissions
Submit your FAST-TRACK manuscript online today. It's fast, it's easy! Just follow the detailed instructions, fill in all the required fields, and upload your manuscript.
Get started NOW!
Contacts
Libraries:
[email protected]

Reprints:
[email protected]

Subscriptions:
[email protected]

Supplements:
[email protected]

Document Delivery Services
120216-2010:

[email protected]

Editorial:
[email protected] [email protected]

Website:
[email protected]

Managing Director:
John Elduff
Phone: 610-889-3732
Fax: 1-866-297-3168
[email protected]

General Information
Phone: 610-889-3730
Fax: 1-866-297-3168
1235 Westlakes Drive
Suite 320
Berwyn, PA 19312
doi: 10.3810/psm.2010.04.1769
The Physician and Sportsmedicine: Volume 38: No.1
Salt Intake, Asthma, and Exercise-Induced Bronchoconstriction:
A Review
Timothy D. Mickleborough, PhD, FACSM
Abstract: Despite the heterogeneous treatment options for patients with asthma, there remains a substantial burden of unaddressed disease, even with optimal treatment. Epidemiological studies indicate that patients frequently resort to complimentary and alternative therapies when being treated for asthma and other chronic health conditions. Changes in diet associated with the development of a more affluent lifestyle is one of the environmental factors considered to contribute to the increased prevalence of asthma in the past few decades. Dietary sodium in particular has been considered to be a dietary constituent implicated in this phenomenon. This article reviews the studies conducted that have questioned whether reducing dietary salt intake potentially improves pulmonary function and airway hyper-responsiveness in asthmatics, as well as studies evaluating dietary salt intake on the severity of exercise-induced bronchoconstriction (EIB). The data presented supporting dietary salt restriction for reducing airway hyper-responsiveness in asthmatics is encouraging, though not clinically convincing. Studies conducted previously have been limited for a variety of reasons, including limitations related to the experiment and populations studied. However, in studies that evaluated the severity of EIB in asthmatic individuals and involved altered dietary salt intake, data have been more convincing. A low-sodium diet maintained for 1 to 2 weeks decreases bronchoconstriction in response to exercise in individuals with asthma. There are no data regarding the longer-term effects of a low-sodium diet on either the prevalence or severity of asthma or on EIB. As a low-sodium diet has other beneficial health effects, it can be considered a therapeutic option for adults with asthma, although it should be considered as an adjunctive intervention to supplement optimal pharmacotherapy, and not as an alternative.

Keywords: dietary sodium; exercise-induced asthma; airway hyper-responsiveness; nutrition

(read)

Back to the table of contents for the April 2010 issue