Asthma in children exposed to nitrogen dioxide in ice arenas

Thunqvist, Per; Lilja, G.; Wickman, Magnus; Pershagen, Göran

doi:10.1183/09031936.02.00266302

Cited by 15 publications

(8 citation statements)

References 19 publications

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“…Recent work has found a higher incidence rate of EIB among Olympic winter athletes than that of the typical athletic population . A similar incidence rate has also been found among hockey players and figure skaters (Rundell 2004a;Rundell et al 2004b;Game et al 2003;Thunqvist et al 2002;Leuppi et al 1998;Mannix et al 1996;ProvostCraig et al 1996). Specifically, it has been suggested that air pollutants emitted by fuel-powered ice resurfacing machines and possible indoor mould concentrations may contribute to the high incidence rate of EIB in skating athletes (Game et al 2003;Rundell 2004a;Rundell et al 2004b;ProvostCraig et al 1996;Wilber et al 2000).…”

Section: Introductionsupporting

confidence: 69%

The effect of a competitive season and environmental factors on pulmonary function and aerobic power in varsity hockey players

Game¹,

Bell²

2006

Appl. Physiol. Nutr. Metab.

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This study examined the effect of a competitive season and environmental factors on pulmonary function and aerobic power in varsity hockey players. Fourteen male subjects completed testing before and after a 7-month varsity hockey season within ice arena conditions. All subjects completed an aerobic power (.)VO(2) (max) test on a cycle ergometer. Pulmonary function tests were performed at rest and 1, 10, 15, and 25 min after the (.)VO(2) (max) test. The arena environment was monitored during testing and throughout the season for temperature, relative humidity, gaseous chemicals, moulds, and fungi. There was no change in (.)VO(2) (max) during the season. The percent change in forced expiratory flow in 1 s (FEV1) post-exercise compared to resting FEV1 and forced vital capacity (FVC) after the (.)VO(2) (max) test were significantly lower after the season. The arena temperature and relative humidity ranged between 13 and 16 degrees C and between 30% and 45% over the course of the season. Sulfur dioxide (0.7-4.5 ppm) was found in the arena and no airborne moulds unique to the dressing room environment were found to exceed Health Canada's guideline of 50 CFU/m(3) for indoor air quality. It was concluded that some hockey players experience limitations to pulmonary function over the course of a competitive season.

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Section: Introductionsupporting

confidence: 69%

The effect of a competitive season and environmental factors on pulmonary function and aerobic power in varsity hockey players

Game¹,

Bell²

2006

Appl. Physiol. Nutr. Metab.

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“…Moreover, hockey players are in contact with carbon monoxide, nitrogen monoxide and nitrogen dioxide contained in the air of sports facilities (produced by ice cleaning machines). A study conducted by Thunqvist et al (2002) showed that children playing hockey in facilities with an increased N2O content (mean concentration 510 ug/m3) more often suffered from symptoms of rhinitis and wheezing respiration in comparison with children playing in facilities where the concentration of this gas was low (mean 89 ug/m3).…”

Section: Discussionmentioning

confidence: 99%

Upper Respiratory Tract Diseases in Athletes in Different Sports Disciplines

Gałązka-Franta

Jura-Szołtys

Smółka

et al. 2016

Journal of Human Kinetics

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Upper respiratory tract diseases in athletes are a very common medical problem. Training conditions in different sports disciplines increase the risk of upper respiratory disease. Epidemiological evidence suggests that heavy acute or chronic exercise is related to an increased incidence of upper respiratory tract infections in athletes. Regular physical exercise at high intensity may lead to transient immunosuppression due to high prevalence of allergic diseases in athletes. Regardless of the cause they can exclude athletes from the training program and significantly impair their performance. In the present work, the most common upper respiratory tract diseases in athletes taking into account the disciplines in which they most often occur were presented. The focus was laid on symptoms, diagnostic methods and pharmacotherapy. Moreover, preventive procedures which can help reduce the occurrence of upper respiratory tract disease in athletes were presented. Management according to anti-doping rules, criteria for return to training and competition as an important issues of athlete’s health were discussed.

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“…The levels of NO 2 are fluctuating and are higher outdoors during wintertime, reaching the highest levels at rush-hour (13). Indoors the levels can be even higher than outdoors when unvented gas fuelled stoves are used and also in skating ice rinks (14,15).…”

Section: No 2 and Its Chemical Propertiesmentioning

confidence: 99%

Ambient level of NO2 augments the inflammatory response to inhaled allergen in asthmatics

Barck

Sandström

Lundahl

et al. 2002

Respiratory Medicine

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Air pollution constitutes an important factor for asthma aggravation, and there is increased concern about respiratory health effects of common air pollutants. The purpose of this study was to examine how exposure to a high ambient concentration nitrogen dioxide (NO2) prior to a bronchial allergen challenge modulated the inflammatory response in the bronchi. Thirteen subjects with mild asthma and allergy were exposed at rest to either purified air or 500 microg x m 3 NO2 for 30 min, followed 4 h later by an allergen inhalation challenge. The exposures (NO2 or air) were performed in random order and at least 4 weeks apart. Lung function during NO2/air exposure and allergen challenge was measured by plethysmography, and then hourly by portable spirometry after exposures. Subjective symptoms were recorded during and after exposure. Bronchoscopy with bronchial wash (BW) and bronchoalveolar lavage (BAL) was performed 19 h after allergen challenge. NO2+allergen enhanced the percentage of neutrophils in both BW and BAL compared to air+allergen (BW 19 vs. 11, P=0.05; BAL 3 vs. 1, P=0.02 median values). The levels of eosinophil cationic protein (ECP) in BW was higher after NO2+allergen compared to air+allergen (90 vs. 3.6 microg/l; P=0.02, median values). There was no NO2-associated effect on symptoms or pulmonary function. These data suggest that ambient NO2 can enhance allergic inflammatory reaction in the airways without causing symptoms or pulmonary dysfunction.

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Asthma in children exposed to nitrogen dioxide in ice arenas

Cited by 15 publications

References 19 publications

The effect of a competitive season and environmental factors on pulmonary function and aerobic power in varsity hockey players

The effect of a competitive season and environmental factors on pulmonary function and aerobic power in varsity hockey players

Upper Respiratory Tract Diseases in Athletes in Different Sports Disciplines

Ambient level of NO2 augments the inflammatory response to inhaled allergen in asthmatics

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