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Effect of physical training on exercise-induced bronchoconstriction.

J M Henriksen, T T Nielsen

Acta Paediatrica Scandinavica

|January 1, 1983

Summary

Endurance training significantly improved exercise capacity in children with asthma by reducing exercise-induced bronchoconstriction. This physical training enhanced working capacity and reduced exercise-induced asthma symptoms.

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Area of Science:

Pediatric Pulmonology
Exercise Physiology
Sports Medicine

Background:

Asthma is a chronic respiratory condition affecting children, often exacerbated by physical activity.
Exercise-induced bronchoconstriction (EIB) is a common symptom in pediatric asthma patients.
Limited research exists on the impact of structured physical training on EIB in this population.

Purpose of the Study:

To investigate the effects of a 6-week endurance training program on exercise-induced bronchoconstriction in asthmatic children.
To assess changes in working capacity and physiological markers following physical training.
To compare outcomes in a trained group versus a control group.

Main Methods:

A 6-week endurance training program was implemented for 28 children with asthma.
Peak expiratory flow (PEF) was measured before and after exercise to assess EIB.
Resting pulmonary function, heart rate, and postexercise plasma lactate levels were monitored.
A control group of 14 asthmatic children did not undergo the training program.

Main Results:

The training group showed a significant reduction in exercise-induced percentage fall in PEF (from 44% to 30%).
Resting pulmonary function remained unchanged, but resting and maximum heart rates, and postexercise plasma lactate decreased.
Positive correlations were observed between EIB and plasma lactate, and training reduced both.
The control group exhibited no significant changes in EIB or physical fitness.

Conclusions:

Six weeks of endurance training is beneficial for reducing exercise-induced bronchoconstriction in asthmatic children.
Physical training improves working capacity and associated physiological parameters in pediatric asthma.
Endurance exercise represents a viable therapeutic strategy for managing EIB and enhancing fitness in children with asthma.

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