Only participants with EILO were recruited and given treatment as usual.

The intervention consisted predominantly of Norwegian Psychomotor Physiotherapy (NPMP) in which participants received individually tailored treatment based on the body examination and reported respiratory distress. NPMP addresses bodily tension, postural de-alignments and dysfunctional breathing patterns. The consultations also included a cognitive dimension, that is a conversation, in which thoughts and behaviours about training and competing were addressed and where participants were provided with "self help" measures that could improve breathing during training and competing. A rehabilitation plan for each participant was designed to limit further impairments and maintaining aerobic capacity without intensifying EILO symptoms. The intervention lasted 5 months.

Experiences of respiratory distress were explored through a history taking and in an qualitative interview based on a questionnaire developed by O. Roksund (2012) Larynx in exercising humans - the unexplored bottleneck of the airways. University of Bergen Norway (PhD thesis). The questionnaire is not developed for research purposes, and reliability and validity studies are lacking. It is however, functional as a basis for the pre and post interview in which respiratory distress was explored and is commonly used for the same purpose at Haukeland University hospital in Norway. The reporting was descriptive and qualitative, and no scale or scores were used.