title: Exercise-related quality of life in subjects with asthma: a systematic review.
abstract: OBJECTIVE
  The purpose of this review was to analyze, based on a review of the current literature, the effects of physical activity on the quality of life (QoL) of subjects with asthma.
  
  
  METHODS
  The authors conducted a search of randomized controlled trials (RCTs) between January 2000 and August 2010 in a group of major databases of health sciences (Academic Search Complete, Directory of Open Access Journals, Elsevier--Science Direct, Highwire Press, PubMed, Scielo Global, Scirus, Scopus, SpringerLink, Taylor & Francis, and Wiley Interscience) with the keywords asthma, QoL, physical activity, exercise, training, and program in all possible combinations. Citations and references of each study selected were also examined.
  
  
  RESULTS
  Of the 1075 studies identified, only 11 were included. Five of these studies were performed in children between the ages of 7 and 15 and the remaining studies were performed on adults. Intervention programs were divided into aerobic training programs and breathing exercises programs. All aerobic training programs showed improvements in QoL, demonstrating a positive influence of aerobic training on asthma.
  
  
  CONCLUSIONS
  There is a noticeable trend in the benefit of aerobic training programs in the QoL for individuals with asthma. The breathing exercises programs were few and heterogeneous, making it difficult to reach a positive conclusion on whether it could be recommended for the improvement of QoL in this pathology. There is a great need for more RCTs with methodological rigor.
authors.affiliation: School of Allied Health Professions, Polytechnic Institute of Oporto, Oporto, Portugal. ftdianapacheco@gmail.com
authors.forename: Diana R R
authors.initials: DR
authors.lastname: Pacheco
authors.forename: Manuel J B
authors.initials: MJ
authors.lastname: Silva
authors.forename: Ana M S
authors.initials: AM
authors.lastname: Alexandrino
authors.forename: Rui M T
authors.initials: RM
authors.lastname: Torres
mesh_terms: D000328:Adult; D001249:Asthma / Q000503:physiopathology* / Q000523:psychology*; D002648:Child; D015444:Exercise / Q000502:physiology* / Q000523:psychology*; D006801:Humans; D011788:Quality of Life