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Titolo:
Airway hyperresponsiveness in elite athletes
Autore:
Langdeau, JB; Turcotte, H; Bowie, DM; Jobin, J; Desgagne, P; Boulet, LP;
Indirizzi:
Univ Laval, Ctr Rech, Hop Laval, Inst Cardiol & Pneumol, St Foy, PQ G1V 4G5, Canada Univ Laval St Foy PQ Canada G1V 4G5 & Pneumol, St Foy, PQ G1V 4G5, Canada
Titolo Testata:
AMERICAN JOURNAL OF RESPIRATORY AND CRITICAL CARE MEDICINE
fascicolo: 5, volume: 161, anno: 2000,
pagine: 1479 - 1484
SICI:
1073-449X(200005)161:5<1479:AHIEA>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
INDOOR SWIMMING POOLS; EXERCISE-INDUCED BRONCHOSPASM; CROSS-COUNTRY SKIERS; ICE HOCKEY PLAYERS; BRONCHIAL RESPONSIVENESS; HIGH PREVALENCE; FIGURE SKATERS; INDUCED ASTHMA; EXPOSURE; RISK;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Boulet, LP Univ Laval, Ctr Rech, Hop Laval, Inst Cardiol & Pneumol, 2725 Chemin St Foy, St Foy, PQ G1V 4G5, Canada Univ Laval 2725 Chemin St Foy St Foy PQ Canada G1V 4G5 , Canada
Citazione:
J.B. Langdeau et al., "Airway hyperresponsiveness in elite athletes", AM J R CRIT, 161(5), 2000, pp. 1479-1484

Abstract

It has been suggested that high-level training could contribute to the development of airway hyperresponsiveness (AHR), but the comparative effects of different sports on airway function remains to be determined. We evaluated 150 nonsmoking volunteers 18 to 55 yr of age; 100 athletes divided into four subgroups of 25 subjects each according to the predominant estimated hydrocaloric characteristic of ambient air inhaled during training: dry air (DA), cold air (CA), humid air (HA) and a mixture of dry and humid air (MA),and 50 sedentary subjects. Each subject had a respiratory questionnaire, amethacholine challenge, allergy skin-prick tests, and heart rate variability recording for evaluation of parasympathetic tone. The athletes had a 49%prevalence of AHR (PC20 < 16 mg/ml), with a mean PC20 of 16.9 mg/ml, compared with 28% (PC20: 35.4) in sedentary subjects (p = 0.009). The prevalence(%) of AHR and mean PC,, (mg/ml) varied as followed in the four subgroups of athletes: DA: 32% and 30.9; CA: 52% and 15.8; HA: 76% and 7.3; and MA: 32% and 21.5 (p = 0.002). The estimated parasympathetic tone was higher in athletes (p < 0.001), but this parameter showed only a weak correlation withPC20 (r = -0.17, p = 0.04). This study has shown a significantly higher prevalence of AHR in athletes than in the control group because of the higherprevalence in the CA and HA groups. Parasympathetic activity may act as modulator of airway responsiveness, but the increased prevalence of AHR in our athlete population may be related to the type and possibly the content ofinhaled air during training.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/02/20 alle ore 14:43:41