Abstract:
BACKGROUND:Breathlessness in asthma often cannot be explained with objective variables indicating airways obstruction. The hypothesis that unrealistic breathlessness results from false interpretation of sensations was tested. METHODS:Sixty-four children and adolescents with asthma, aged 9-18 years, were randomly assigned to; (1) standardized physical exercise for induction of general symptoms; (2) equipment causing itching through skin irritation; or (3) physical exercise combined with equipment causing itching through skin irritation. Pre-test and post-test measures were: lung function; breathlessness; general symptoms; itching; state anxiety; and worry. RESULTS:Lung function decreased within normal parameters (3.8%, 1.1%, 2.6%, respectively) and did not differ significantly between conditions. Breathlessness increased significantly after exercise, particularly in condition 3. Breathlessness correlated with general symptoms and worrying, but not with changes in lung function, age, or asthma severity. CONCLUSION:Biased symptom perception can explain unrealistic breathlessness. Prerequisites are situational cues triggering selective perception and ambiguous sensations associated with the anticipated (feared) physical state. Excessive breathlessness may often warrant objective confirmation by means of lung-function testing.
journal_name
Psychol Medjournal_title
Psychological medicineauthors
Rietveld S,Everaerd W,Vanbeest Idoi
10.1017/s0033291798007764subject
Has Abstractpub_date
1999-01-01 00:00:00pages
121-6issue
1eissn
0033-2917issn
1469-8978journal_volume
29pub_type
临床试验,杂志文章,随机对照试验abstract:BACKGROUND:The increased occurrence of obstetric complications (OCs) in patients with schizophrenia suggests that alterations in neurodevelopment may be of importance to the aetiology of the illness. Abnormal cortical folding may reflect subtle deviation from normal neurodevelopment during the foetal or neonatal period...
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