Ventilatory functions of normal children and young adults—Mexican-American, white, and black. II. Wright peak flowmeter

Hsu, Katharine H. K.; Jenkins, Daniel E.; Hsi, Bartholomew P.; Bourhofer, Erwin; Thompson, Virginia M.; Hsu, Frank F.C.; Jacob, Susan C.

doi:10.1016/s0022-3476(79)80649-6

Cited by 71 publications

(11 citation statements)

References 6 publications

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“…Measures of asthma severity were expressed as percent of predicted PEF (31,32), percent of predicted forced expiratory volume in 1 second (FEV 1 ) (33), ASUI (26), and asthma exacerbations (25). For all micronutrients examined, except genistein, nutrient densities (units/1000 kcal) were classified into quartiles.…”

Section: Data Analysesmentioning

confidence: 99%

Dietary Intake of Soy Genistein is Associated with Lung Function in Patients with Asthma

et al. 2004

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To determine if micronutrient intake is associated with asthma severity, we administered the Block food frequency questionnaire to participants in a randomized clinical trial of the safety of influenza vaccine for asthmatics. The nutrition substudy included 1033 participants, aged 12-75. Intake of antioxidant vitamins, soy isoflavones, total fruits and vegetables, fats, and fiber was compared with asthma severity at baseline [forced expiratory volume in 1 second (FEV1), peak expiratory flow rate (PEF), asthma symptoms] and the rate of asthma exacerbations during the 2 weeks following influenza vaccination. The only nutrient that had a consistent association with asthma severity was genistein, a soy isoflavone. None of the nutrients evaluated were related to asthma exacerbation rate when adjusted for known confounders. The FEV1 in genistein consumers of at least 250 microg/1000 Kcal/day was 82.1% predicted, 79.9% predicted for those who consumed between 1 and 249 microg/1000 kcal, and 76.2% predicted in genistein nonconsumers (p=0.006); the PEF was 82.7% predicted, 80.8% predicted, and 78.3% predicted, respectively (p=0.009). There were no differences in the Asthma Symptom Utility Index (ASUI). We could not account for these results based on differences in demographics, body mass index, or consumption of other nutrients. Thus, increasing consumption of genistein is associated with better lung function in patients with asthma. Further studies are needed to determine whether dietary supplementation with genistein can reduce asthma severity.

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Section: Data Analysesmentioning

confidence: 99%

Dietary Intake of Soy Genistein is Associated with Lung Function in Patients with Asthma

et al. 2004

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“…The best of 3 efforts was used. Values were expressed as percent expected normal values (9,10). EIB was primarily expressed as % fall from baseline: (baselinelowest postexercisebaseline) x 100%.…”

Section: Pulmonary Functionmentioning

confidence: 99%

Effect of Physical Training on Exercise‐induced Bronchoconstriction

Henriksen

Nielsen

1983

Acta Paediatrica

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A 6-week period of physical training of 28 asthmatic children reduced the exercise-induced percentage fall in peak expiratory flow (from baseline) from 44 +/- 4% (mean +/- SE) to 30 +/- 4%. Resting pulmonary function was unchanged. Resting and maximum heart rate (submaximal treadmill running) and postexercise plasma lactate were all lowered by training. The individual values for exercise-induced bronchoconstriction and postexercise plasma lactate correlated positively before and after training. Furthermore, the training-induced reduction in these parameters correlated. In 14 asthmatic children, who served as controls, exercise-induced bronchoconstriction and physical fitness remained unchanged during a comparable period. The study demonstrates a beneficial effect of endurance training on exercise-induced bronchoconstriction and working capacity.

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“…The best of three blowings was used for calculation. All the pulmonary data were transformed to percent predicted normal values (18,19).…”

Section: Exercise Challengementioning

confidence: 99%

Exercise‐Induced Bronchoconstriction

Henriksen

1986

Allergy

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Standardized exercise challenge tests, symptom scores and whole-blood eosinophil and basophil counts were made before and during the pollen season in 32 children suffering from hay fever (n = 16) or hay fever and asthma (n = 16). All participants developed rhinitis symptoms during the season. The hay fever group showed in addition a significant seasonal increase in cough score (but in no other asthma symptom) and in circulating eosinophils (P less than 0.01); mean exercise-induced bronchoconstriction (EIB) did not change despite a slight increase in a few subjects. The asthma group showed seasonal increases in EIB (P less than 0.001), asthma symptom score (P less than 0.002), and total eosinophil count (P less than 0.001). The increase in the latter was significantly higher (P less than 0.05) than that in the hay fever group. The relative basophil count remained unchanged in both groups. In conclusion, the hay fever group and the asthma group could be clearly distinguished with respect to EIB during natural pollen exposure. The significantly higher increases in EIB and circulating eosinophils observed in the asthma group might possibly be due to greater pollen antigen sensitivity in the asthmatics.

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Ventilatory functions of normal children and young adults—Mexican-American, white, and black. II. Wright peak flowmeter

Cited by 71 publications

References 6 publications

Dietary Intake of Soy Genistein is Associated with Lung Function in Patients with Asthma

Dietary Intake of Soy Genistein is Associated with Lung Function in Patients with Asthma

Effect of Physical Training on Exercise‐induced Bronchoconstriction

Exercise‐Induced Bronchoconstriction

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