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Bronchial hyperresponsiveness (BHR) and physical activity
  1. N M Haley,
  2. A H Morice
  1. Academic Respiratory Unit, Castle Hill Hospital, Hull, UK
  1. Professor A H Morice, Academic Department of Medicine, Castle Hill Hospital, Cottingham East, Yorkshire HU16 5JQ, UK; a.h.morice{at}

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We read with interest the recent paper by Shaaban et al1 who report a negative relationship between bronchial hyperresponsiveness (BHR) and physical activity. Several hypotheses are invoked to explain this association, including a suggestion that physical activity reduces bronchial inflammation by altering airway physiology.

Their major hypothesis is that obesity reduces physical activity and that it is this reduction in physical …

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