Journal of Asthma (J Asthma)

Publisher: Informa Healthcare

Journal description

Providing an authoritative open forum on asthma and related conditions, this highly regarded journal brings timely reports of relevant advances in areas from molecular biology to government legislation to those involved in the research, clinical, and educational aspects of asthma management. MULTIDISCIPLINARY... The Journal discusses asthma from the perspectives of clinical immunology allergy pulmonary physiology psychosomatics pharmacology and other asthma-related clinical health trends PRACTICAL The Journal offers valuable guidelines for the basic understanding of emergency and long-term care environmental counseling preventative measures patient education and psychological support AND MUCH MORE!

Current impact factor: 1.83

Impact Factor Rankings

2015 Impact Factor Available summer 2015
2013 / 2014 Impact Factor 1.828
2012 Impact Factor 1.848
2011 Impact Factor 1.525
2010 Impact Factor 1.341
2009 Impact Factor 1.372
2008 Impact Factor 1.33
2007 Impact Factor 1.324
2006 Impact Factor 1.476
2005 Impact Factor 1.346
2004 Impact Factor 0.975
2003 Impact Factor 1
2002 Impact Factor 1.02
2001 Impact Factor 1.043
2000 Impact Factor 1.419
1999 Impact Factor 1.109
1998 Impact Factor 1.163
1997 Impact Factor 0.791
1996 Impact Factor 0.794
1995 Impact Factor 0.384
1994 Impact Factor 0.604
1993 Impact Factor 0.301
1992 Impact Factor 0.225

Impact factor over time

Impact factor

Additional details

5-year impact 1.75
Cited half-life 5.10
Immediacy index 0.20
Eigenfactor 0.01
Article influence 0.52
Website Journal of Asthma website
Other titles Journal of asthma (Online), Journal of asthma
ISSN 1532-4303
OCLC 48876396
Material type Document, Periodical, Internet resource
Document type Internet Resource, Computer File, Journal / Magazine / Newspaper

Publisher details

Informa Healthcare

  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author cannot archive a post-print version
  • Restrictions
    • 12 months embargo
  • Conditions
    • On author's personal website or institution website
    • Publisher copyright and source must be acknowledged
    • Non-commercial
    • Must link to publisher version
    • Publisher's version/PDF cannot be used
    • NIH funded authors may post articles to PubMed Central for release 12 months after publication
    • Wellcome Trust authors may deposit in Europe PMC after 6 months
  • Classification
    ​ yellow

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: Asthma continues to be an important cause of morbidity and mortality in developing countries. But, its burden among adult populations in university campuses is not well described. Through a multistage cluster sampling of students and staff of the Obafemi Awolowo University, Ile-Ife, Nigeria, we obtained a representative sample, each for students and staff. We administered the European Community Respiratory Health Survey (ECRHS) screening questionnaire to all the respondents. A subgroup did a spirometry test and completed a detailed questionnaire. Asthma was considered "possible", if a respondent provided affirmative response to symptoms of "wheezing or whistling", "attack of shortness of breath", "diagnosed attack of asthma" in the last 12 months or "currently taking medicines for asthma". From population of 13 750 students and 1428 staff of the university, we systematically sampled 2750 (20%) students and all the staff. Amongst these, 2372 students and 455 staff completed the screening questionnaire. The mean age (SD) of the responders was 21.9 (3.2) and 46.1 (8.9) for students and staff and most of them were men; 58.6% and 65.9%, respectively. While an estimated 2.6% (95% CI: 1.7-3.5) of students had an asthma attack in the preceding 12 months, 14.5% (95% CI: 12.5-16.5) and 25.2% (95% CI: 22.8-27.7) reported shortness of breath and nocturnal cough, respectively. The staff population reported fewer symptoms. The proportion with "possible asthma" was 18.2% (95% CI: 16.0-20.4) for students and 8.0% (95% CI: 5.4-10.7) for staff. The prevalence of asthma is high among students and staff of Obafemi Awolowo University, Nigeria.
    Journal of Asthma 08/2015; DOI:10.3109/02770903.2015.1060609
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    ABSTRACT: Recent research suggests that health disparities persist among asthmatic patients and receipt of asthma education, though recent guidelines have highlighted the importance of receiving asthma education. The purpose of this study was to identify trends in the receipt of asthma education as well as to identify disparities in asthma education using the most recently available data in National Ambulatory Medical Care Survey (NAMCS), 2007-2010. Weighted chi-square tests were conducted to identify associations between asthma education and variables of interest. A weighted multivariate logistic regression model was subsequently constructed to jointly assess the association of factors of interest on receipt of asthma education. Submission to the Campbell University IRB resulted in expedited approval. The percentage of patients who receive asthma education remains quite low. After adjusting for all variables of interest: no statistically significant difference in receipt of asthma education between year groups (2007-2008, 2009-2010) was found (OR 0.84, 95%CI 0.52-1.34); patients seen by pediatricians (vs. internal medicine physicians) and Hispanic or Latino patients (vs. Non-Hispanic or Latino patients) were more likely to receive asthma education (OR 2.72, 95%CI 1.11-6.66 and OR 2.33, 95% CI 1.18-4.60, respectively) and; patients not prescribed a controller medication were less likely to receive asthma education than those who were (OR 0.56, 95%CI 0.37-0.82). Combined with previously published results, it appears the provision of asthma education continues to be low, despite proven benefits. Additionally, some patient and physician characteristics may be associated with the delivery of asthma education.
    Journal of Asthma 08/2015; DOI:10.3109/02770903.2015.1087024
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    ABSTRACT: In this study, we assessed whether adult patients with asthma are more likely to be diagnosed with depression than diabetes patients or "healthy" controls during follow-up in primary care. Data from the Nijmegen Continuous Morbidity Registration were used to assess the risk for a first depression. Patients with asthma were compared with patients with diabetes and with two healthy controls matched on age, gender, socioeconomic status and attending general practice. With Cox proportional hazard analysis, we compared the risk of depression between these groups. These analyses were corrected for relevant covariates including a time-depending variable for multimorbidity. Explorative subgroup analyses were done for age, gender, socioeconomic status and multimorbidity. Cumulative incidence of depression in asthma patients was 5.2%, in DM patients 4.1% and in control subjects 3.3%. The hazard ratios for a first episode of depression in the asthma patients (n = 795) compared to DM patients (n = 1033) and control subjects after correction for covariates were 1.11 (95% CI 0.60-2.04) and 1.18 (95% CI 0.78-1.79), respectively. Exploratory analyses showed that asthma patients without multimorbidity were at higher risk for a depression compared to reference groups, while asthma patients with multimorbidity were at lower risk for depression. Asthma patients were not more likely to be diagnosed with a first depression compared to "healthy" control subjects or diabetes patients. The influence of multimorbidity on depression risk in asthma patients warrants further study.
    Journal of Asthma 08/2015; DOI:10.3109/02770903.2015.1059852
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    ABSTRACT: Dust mite allergens can induce allergic sensitization and exacerbate asthma symptoms. Although dust mite reduction and control strategies exist, few asthmatics employ them. We examined whether an in-home test kit, which quantifies dust mite allergen levels, resulted in behavioral changes in implementation and maintenance of mite reduction strategies and helped reduce allergen levels in homes of dust mite-sensitive children. We enrolled 60 households of children aged 5-15 with parent-reported dust mite allergy into a randomized controlled trial. Intervention homes (N = 30) received educational material about reducing dust mites and test kits at 1, 2, 5 and 8 months. Control homes (N = 30) received only educational material. At baseline, 6 and 12 months, study staff visited all homes, collected dust samples from three locations and obtained information about parents' mite reduction behaviors by questionnaire. Allergen concentrations (Der f 2/Der p2) in dust were assessed by immunoassays. After adjusting for visit and location, allergen concentrations in intervention and control homes were compared using mixed effects model analysis. In the intervention homes, allergen concentrations in the child's bedroom and living room floors were significantly reduced over time compared to control homes. Although not all location-specific differences in allergen concentrations were statistically significant, combining data across locations, there was a differential reduction in allergen concentrations in the intervention group versus the control group (p = 0.02). The use of in-home test kits along with education may beneficially influence behaviors and attitudes toward dust mite reduction strategies and help reduce residential dust mite allergen levels.
    Journal of Asthma 08/2015; DOI:10.3109/02770903.2015.1072721
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    ABSTRACT: The purpose of this study was to examine well-being or flourishing of adolescents with asthma as well as factors influencing flourishing for these adolescents. A secondary analysis of data collected for the 2011-2012 National Survey of Children's Health was conducted. Flourishing of adolescents with and without asthma was compared. Parent coping and anger, child sex and age and child flourishing were examined for adolescents with asthma. Youth with asthma had lower flourishing than those without this disease. Positive parent coping was related to flourishing, while parent anger negatively influenced flourishing of adolescents with asthma. Interaction terms were significant, indicating that the aforementioned variables interacted with adolescent age and sex. Study results point to a complex relationship between parent- and adolescent-level factors and adolescent well-being. Further research is needed to examine relations among flourishing and health outcomes in youth with asthma.
    Journal of Asthma 08/2015; DOI:10.3109/02770903.2015.1072722
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    ABSTRACT: To investigate the relationship between asthma control and psychosocial outcomes in pregnant women with asthma. Secondary analysis (N = 221) of a randomized controlled trial of treatment adjustments, based on fractional exhaled nitric oxide versus clinical guideline-based algorithms. Psychosocial variables included generic and asthma-specific quality of life (SF12, AQLQ-M), illness perceptions (BIPQ), perceived control (PCAQ), perceived risk of side effects (PRSE) and anxiety (STAI-6). Asthma control was defined as controlled (Asthma Control Questionnaire (ACQ7) ≤1.5 at randomization and end of study), improved (ACQ7 > 1.5 at randomization and ≤1.5 at end of study) and unimproved (ACQ7 >1.5 at end of study). Regression models were fitted for each psychosocial measure at the end of the study, with adjustment for baseline values and smoking status, with predictor variable asthma control. Women with unimproved asthma had poorer physical (SF12, p = 0.012) and asthma-specific quality of life across all domains (AQLQ-M, p ≤ 0.012) compared to women with controlled asthma. They believed that they had less control over their asthma (PCAQ total p = 0.014), had more symptoms and that their illness had a greater effect on their emotions and their lives in general (BIPQ identity, consequences, concern, emotional response p ≤ 0.015). Women with improved asthma control had significantly lower AQLQ-M breathlessness (p = 0.048) and lower total scores (p = 0.04) than women with controlled asthma. Pregnant women who are not able to get control of their asthma symptoms may experience worse quality of life and are likely to have more negative perceptions about their condition.
    Journal of Asthma 08/2015; DOI:10.3109/02770903.2015.1038833
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    ABSTRACT: There has been significant interest in the association between asthma and the polymorphisms of IL-17A and IL-17F for a period of time. This work aims to present a clearer relationship between asthma and the polymorphisms of IL-17A and IL-17F. Searches were performed in Medline, EMBASE, and the Chinese National Knowledge Infrastructure (CNKI) databases. Pooled odds ratios (ORs) and 95% confidence intervals (CIs) were calculated to assess the relationship between polymorphisms of IL-17A and IL-17F and asthma. Nine studies comprising 3650 asthmatics and 3370 controls were included in this meta-analysis for all single nucleotide polymorphisms (SNPs) (2-6 per SNP). Our study examined the polymorphisms of IL-17F rs1889570 (C/T) (CC versus TT: OR = 0.55, 95%CI = 0.41-0.75; CT versus TT: OR = 0.54, 95%CI = 0.40-0.72; CC/CT versus TT: OR = 0.55, 95%CI = 0.42-0.72; CC versus CT/TT, OR = 1.83, 95%CI = 1.39-2.41), IL-17A rs4711998(A/G) (AA/AG versus GG: OR = 0.67, 95%CI = 0.46-0.98), and IL-17A rs3819024(A/G) (AA versus GG: OR = 1.77, 95%CI = 1.39-2.25) and found they were significantly related to the risk of asthma. Our systematic review showed that IL-17F rs1889570(C/T), IL-17A rs4711998(A/G) and IL-17A rs3819024(A/G) may be potential risk factors for asthma susceptibility.
    Journal of Asthma 08/2015; DOI:10.3109/02770903.2015.1044251
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    ABSTRACT: This study examines (1) whether youth and their caregivers have different preferences for asthma education video topics and (2) if education topic preferences vary by youth and caregiver sociodemographic characteristics. Youth (n = 83) ages 7-17 years with persistent asthma and their caregivers were recruited at two pediatric practices in North Carolina. Sociodemographic information and youth and caregiver preferences for nine asthma video education topics were collected during in-person interviews. Bonferroni-corrected Chi-square or McNemar tests (α = 0.0056) were used to compare youth and caregivers differences in topic preferences and topic preferences by youth and caregiver sociodemographic characteristics, including gender, race, ethnicity, and age. Youth were primarily male (52%) and from low-income families (74%; caregiver annual income less than $30 000) and many were Hispanic (45%). Youth and parents expressed the most interest in the following two topics: "how to deal with triggers" (90% and 95%, respectively) and "how to keep asthma under control" (87% and 96%, respectively). Caregivers and children were discordant for two topics: "the difference between a rescue and controller medicine" and "how to [help your child] talk to your [his/her] friends about asthma." No differences were found between youth and caregiver sociodemographic characteristics and video topic preferences. Youth with persistent asthma and their caregivers differed in their asthma education topic preferences, but preferences did not vary by caregiver or youth sociodemographic characteristics. Studies examining the effectiveness of interventions tailored to differences in educational preferences of youth with asthma and their caregivers are needed.
    Journal of Asthma 08/2015; DOI:10.3109/02770903.2015.1057847
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    ABSTRACT: Eosinophilic chronic rhinosinusitis (ECRS) is as a subgroup of chronic rhinosinusitis (CRS) with nasal polyps. ECRS is a refractory disease closely related to bronchial asthma. Fractionated exhaled nitric oxide (FeNO) levels were reportedly elevated in some asthmatics with CRS after adequate treatment, suggesting that residual eosinophilic airway inflammation or ECRS might affect FeNO levels. To investigate the association between asthma with ECRS and FeNO levels, we examined FeNO levels in 133 asthmatics (99 with ECRS and 34 without ECRS) and 13 patients with ECRS without asthma. The severity of asthma was defined by the Global Initiative for Asthma guidelines and that of sinusitis was evaluated by the sinus CT score based on the Lund-Mackay scale. FeNO levels were elevated even in well-controlled asthmatics with ECRS, whereas asthmatics without ECRS and ECRS patients without asthma did not have high FeNO levels (>50 ppb). Although FeNO levels were not correlated with asthma severity, they were positively correlated with the sinus CT score. In asthmatics with ECRS, patients with higher FeNO levels had more severe ECRS and asthma. There is a possibility of having comorbid ECRS, particularly in asthmatics with high FeNO levels even after adequate treatment, including ICS, suggesting that asthma and ECRS may be closely associated as one airway disease with eosinophilic inflammation. Continual awareness of the coexistent ECRS is ideally recommended for asthmatics with high FeNO levels.
    Journal of Asthma 08/2015; DOI:10.3109/02770903.2015.1054404
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    ABSTRACT: Fractional concentration of exhaled nitric oxide (FeNO) is a known marker of airway inflammation. The aims of this study were to evaluate FeNO, impulse oscillometry (IOS), and spirometry in preschool children and to investigate their relationship with wheeze and airway hyperresponsiveness (AHR). We performed a population-based, cross-sectional study with 561 children aged 5-6 years. A total of 544 children completed a modified International Study of Asthma and Allergies in Childhood (ISAAC) questionnaire and eligible for the study. We measured FeNO, spirometry, methacholine bronchial provocation, and IOS. AHR was defined as the induction of a 20% decrease in FEV1(PC20) by a methacholine concentration ≤8.0 mg/dL. Children who had wheeze or AHR had higher FeNO levels than children without these symptoms. However, neither IOS nor spirometry parameters showed significant differences between children with wheeze or AHR and those without. FeNO was associated with AHR, whereas IOS or spirometry parameters showed no association. Mean FeNO levels were positively correlated with a dose-response slope for methacholine, but neither IOS nor spirometry parameters showed significant correlations. FeNO is a more sensitive measurement of AHR and wheeze than spirometry or IOS in preschool children.
    Journal of Asthma 08/2015; DOI:10.3109/02770903.2015.1046078
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    ABSTRACT: Fluticasone furoate (FF; inhaled corticosteroid) combined with vilanterol (VI; long-acting beta2 agonist) is a once-daily therapy for asthma and chronic obstructive pulmonary disease. This 12-week phase III study compared the efficacy and safety of once-daily (evening dosing) FF/VI 100/25 mcg versus FF 100 mcg (primary objective) and FF/VI 100/25 mcg versus FF/VI 200/25 mcg (descriptive comparison only) in patients (n = 1039) ≥12 years with moderate-to-severe persistent asthma. The primary end point was weighted mean (wm) 0-24-h serial forced expiratory volume in 1 s (FEV1) at week 12. Secondary end points (change from baseline) were trough FEV1 and the proportion (%) of rescue-free 24-h periods (both powered), the proportion (%) of symptom-free 24-h periods, and morning and evening peak expiratory flow (PEF). Safety data (adverse events, AEs) were collected throughout. Compared with FF 100 mcg, FF/VI 100/25 mcg significantly improved wmFEV1 (p < 0.001), trough FEV1 (p = 0.014), % rescue-free (p < 0.001), % symptom-free (p = 0.002) 24-h periods, and morning and evening PEF (p < 0.001). FF/VI 200/25 mcg produced small numerical improvements versus FF/VI 100/25 mcg for all end points. Incidence of AEs was similar across groups. FF/VI 100/25 mcg resulted in significant improvements in all primary and secondary end points versus FF 100 mcg. Numerical improvements occurred with FF/VI 200/25 mcg versus FF/VI 100/25 mcg. All treatments were well tolerated.
    Journal of Asthma 08/2015; DOI:10.3109/02770903.2015.1056350
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    ABSTRACT: A substantial proportion of low-income children with asthma living in rural western North Carolina have suboptimal asthma management. To address the needs of these underserved children, we developed and implemented the Regional Asthma Disease Management Program (RADMP); RADMP was selected as one of 13 demonstration projects for the National Asthma Control Initiative (NACI). This observational intervention was conducted from 2009 to 2011 in 20 rural counties and the Eastern Band Cherokee Indian Reservation in western North Carolina. Community and individual intervention components included asthma education in-services and environmental assessments/remediation. The individual intervention also included clinical assessment and management. Environmental remediation was conducted in 13 childcare facilities and 50 homes; over 259 administrative staff received asthma education. Fifty children with mild to severe persistent asthma were followed for up to 2 years; 76% were enrolled in Medicaid. From 12-month pre-intervention to 12-month post-intervention, the total number of asthma-related emergency department (ED) visits decreased from 158 to 4 and hospital admissions from 62 to 1 (p < 0.0001). From baseline to intervention completion, lung function FVC, FEV1, FEF 25-75 increased by 7.2%, 13.2% and 21.1%, respectively (all p < 0.001), and average school absences dropped from 17 to 8.8 days. Healthcare cost avoided 12 months post-intervention were approximately $882 021. The RADMP program resulted in decreased ED visits, hospitalizations, school absences and improved lung function and eNO. This was the first NACI demonstration project to show substantial improvements in healthcare utilization and clinical outcomes among rural asthmatic children.
    Journal of Asthma 08/2015; DOI:10.3109/02770903.2015.1008140
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    ABSTRACT: Salmeterol/fluticasone combination (SFC) formulated in a breath-actuated inhaler (BAI) overcomes the co-ordination problem associated with the pressurized-metered dose inhaler (pMDIs). Our aim was to compare the efficacy and the safety of SFC given through the BAI versus the conventional pMDI in moderate-to-severe asthmatics. In this randomized, double-blind, double-dummy, prospective, active-controlled, parallel group, multicenter, 12 weeks study, 150 asthmatics were randomized to receive SFC (25/125 mcg) through either BAI or pMDI. The primary efficacy endpoint was mean change in pre-dose morning PEFR value at 12 weeks and the secondary efficacy endpoints included, mean change in FEV1, pre-bronchodilator FVC, pre-dose morning and evening PEFR, symptom scores at 2, 4, 8, and 12 weeks. Patient preferences for device and safety were also assessed. At 12 weeks, the mean change in pre-dose morning PEFR in BAI and pMDI groups was 50.72 L/min and 48.82 L/min, respectively (p < 0.0001; both groups) and the difference between the two groups was not significant. Both the treatment groups showed a statistically significant improvement in secondary endpoints at all-time points compared with baseline. The usability questionnaire assessment results showed that the BAI device was preferred by 75% of patients as compared with 25% preferring pMDI. SFC in both BAI and pMDI devices was found to be safe and well tolerated. This is the first study to demonstrate that SFC given through the BAI produces comparable efficacy and safety endpoints as pMDI. Additionally, BAI was the preferred inhaler by patients compared to conventional pMDI.
    Journal of Asthma 08/2015; DOI:10.3109/02770903.2015.1050499
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    ABSTRACT: This study assessed the postural stability in children with asthma using balance tests under conditions of a comfortable foot placement and with a foot placement provoking instability. A group of 10 school children from 8 to 10 years old with mild intermittent asthma and 10 healthy children of the same age range performed four balance tests in a randomized order: preferred stance, adjusted stance, and tandem stance each under both conditions of eyes opened (EO) and eyes closed (EC), as well as a one-legged stance with eyes-opened conditions. To determine postural stability, the center of pressure (CoP) movement was recorded. Basic stabilographic parameters were calculated: CoP velocity in the anterior-posterior direction, CoP velocity in the medial-lateral direction, and the total CoP velocity. Statistically significant differences between the groups were found only for the one-legged stance. Significantly greater anterior-posterior CoP velocity (p = 0.05) and total CoP velocity (p = 0.03) were found in children with asthma when standing on the preferred foot. A significantly greater medial-lateral velocity (p = 0.02) was also found in the non-preferred foot of children with asthma. We can conclude that standing on one leg might be an appropriate test with which to identify balance differences between young children with mild intermittent asthma and healthy children.
    Journal of Asthma 08/2015; DOI:10.3109/02770903.2015.1038391
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    ABSTRACT: To describe actions taken by providers at primary care visits to promote daily use of preventive asthma medication, and determine whether patient or encounter variables are associated with the receipt of asthma medication education. As part of a larger study in Rochester, NY, caregivers of children (2-12 years old) with asthma were approached before an office visit for well-child, asthma-specific or other illness care from October 2009 to January 2013. Eligibility required persistent symptoms and a prescription for an inhaled asthma controller medication. Caregivers were interviewed within two weeks to discuss the health care encounter. We identified 185 eligible children from six urban primary care offices (27% Black, 38% Hispanic, 65% Medicaid). Overall, 42% of caregivers reported a discussion of appropriate preventive medication use, fewer than 25% received an asthma action plan, and 17% reported "ideal" medication education (both discussing proper medication use and completing an asthma action plan); no differences were seen upon comparing well-child and asthma-specific visits with other visits. Well-child and asthma-specific visits together were more likely, compared with other visits, to include a recommendation for a follow-up visit (43% versus 23%, p = 0.007). No patient factors were associated with report of preventive medication education. Guideline-recommended education for caregivers about preventive-asthma medication is not occurring in the majority of primary care visits for urban children with symptomatic persistent asthma. Novel methods to deliver asthma education may be needed to promote appropriate preventive medication use and reduce asthma morbidity.
    Journal of Asthma 08/2015; DOI:10.3109/02770903.2015.1075549
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    ABSTRACT: To examine the inter-relationships among body mass index (BMI), physical activity, sedentary behavior and gender in urban, low-income, primarily African American young adolescents with or without lifetime asthma. Data were collected in 2002-2004 from 626 12-year old adolescents who were children of women who participated in the New Mother's Study in Memphis, TN (1990-1991). Adolescents with and without asthma were compared on BMI, physical activity and sedentary behavior. Multiple linear regression models were used to examine the association of asthma, gender and BMI with physical activity and sedentary behavior. Complete data were available for 545 adolescents. Eleven percent of adolescents had lifetime asthma. Asthma and gender were associated with high-intensity physical activity (p < 0.001). Adolescents with asthma participated in less physical activity and girls participated less than boys. Gender was associated with sedentary behavior (p < 0.001): boys used personal computer (pc)/video after school more than girls. Girls with asthma had a higher BMI than girls without asthma (p = 0.027). Boys with asthma were less physically active than boys without asthma (p < 0.05). Adolescents with asthma are less physically active than those without asthma and girls are less active than boys. Clinicians who provide care for adolescents with asthma are encouraged to assess physical activity/sedentary behavior and provide guidance that promotes active lifestyles. A longitudinal study is needed to shed light on the unique contribution of asthma separated from the effects of overweight/obesity on physical activity and sedentary behaviors.
    Journal of Asthma 08/2015; DOI:10.3109/02770903.2015.1063646
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    ABSTRACT: Asthma is common among elite endurance athletes. Since the first published Swedish studies in 1993, awareness of "skiers' asthma" has increased. The current prevalence of asthma among Swedish skiers is unknown. This paper aims to present the design of a 5-year prospective annual questionnaire study on asthma among Swedish current and former elite endurance athletes, the first cross-sectional results on prevalence, age of onset, and predictors of self-reported physician-diagnosed asthma in the study population. An annual postal questionnaire is sent to Swedish elite skiers and orienteers during 2011-2015. In 2013, former Swedish Olympic skiers were similarly invited. We present cross-sectional data obtained in 2011 from the adolescents and adults and in 2013 from former skiers. A total of 491 athletes were invited. The results are presented by age, sex and sport. Chi-square test was used for group comparisons. Predictors of asthma were identified using logistic regression. Response rate was 82%. Among athletes aged 15-19, 29% of the skiers (38% of the female skiers), and 17% of the orienteers reported asthma (p = 0.071). Among the athletes aged 20-34, 35% of the skiers and 16% of the orienteers reported asthma (p = 0.029). Among the former skiers aged 40-94, 22% reported asthma. Among the active athletes, the onset of asthma was in early adolescence. Logistic regression found increasing age, female sex, allergy, family history of allergy/asthma and being skier predictors of self-reported physician-diagnosed asthma. The prevalence of physician-diagnosed asthma is high among Swedish endurance athletes, especially female adolescent skiers.
    Journal of Asthma 08/2015; DOI:10.3109/02770903.2015.1038389