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Habitual physical activity in children and adolescents with cystic fibrosis.

Abstract

PURPOSE

This study was conducted to: 1) measure total physical activity levels, including the intensities of the various types of activities, in children and adolescents with CF compared with non-CF healthy control subjects; and 2) determine whether vigorous activity level was related to aerobic fitness and disease status in patients with CF.

METHODS

Thirty patients with CF (18 male, 12 female) and 30 control subjects (17 male, 13 female), 7-17 yr old, participated in this study. Habitual physical activity was measured using Kriska's Modifiable Activity Questionnaire (MAQ) and the past year's average of total hours, MET-hours, and vigorous (VIG) hours (>6 METs) of activity per week were determined. Aerobic fitness was determined from peak oxygen uptake (VO2peak) obtained via maximal exercise testing on a cycle ergometer. Standard spirometry was used to measure pulmonary function. Body mass index (BMI) was determined from height and weight measurements.

RESULTS

The CF and control groups were similar in age and gender distribution, but the patients were smaller (BMI, 98 vs 112% of predicted) and less aerobically fit (36.5 vs 41.4 mL x kg(-1) x min(-1)). Total and MET-hours of physical activity did not differ between groups; however, the CF group participated in significantly fewer hours of vigorous activities than the control group (2 vs 3.7 h x wk(-1)). In patients with worse lung disease, VIG-h x wk(-1) were significantly related to VO2peak (r = 0.83).

CONCLUSION

These results suggest that children with CF engage in less vigorous physical activities than their healthy non-CF peers, despite having good lung function. In view of the progressive nature of the disease, and the association between aerobic fitness and vigorous activity, patients should be encouraged to engage in more vigorous activities that promote aerobic fitness and may ultimately have an impact on survival.

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  • Authors+Show Affiliations

    ,

    Department of Health and Exercise Science, Wake Forest University, Winston-Salem, NC 27104, USA. nixonpa@wfu.edu

    ,

    Source

    MeSH

    Adolescent
    Case-Control Studies
    Child
    Cystic Fibrosis
    Exercise
    Exercise Test
    Female
    Humans
    Male
    Physical Fitness
    Respiratory Function Tests

    Pub Type(s)

    Comparative Study
    Journal Article
    Research Support, U.S. Gov't, P.H.S.

    Language

    eng

    PubMed ID

    11194108

    Citation

    Nixon, P A., et al. "Habitual Physical Activity in Children and Adolescents With Cystic Fibrosis." Medicine and Science in Sports and Exercise, vol. 33, no. 1, 2001, pp. 30-5.
    Nixon PA, Orenstein DM, Kelsey SF. Habitual physical activity in children and adolescents with cystic fibrosis. Med Sci Sports Exerc. 2001;33(1):30-5.
    Nixon, P. A., Orenstein, D. M., & Kelsey, S. F. (2001). Habitual physical activity in children and adolescents with cystic fibrosis. Medicine and Science in Sports and Exercise, 33(1), pp. 30-5.
    Nixon PA, Orenstein DM, Kelsey SF. Habitual Physical Activity in Children and Adolescents With Cystic Fibrosis. Med Sci Sports Exerc. 2001;33(1):30-5. PubMed PMID: 11194108.
    * Article titles in AMA citation format should be in sentence-case
    TY - JOUR T1 - Habitual physical activity in children and adolescents with cystic fibrosis. AU - Nixon,P A, AU - Orenstein,D M, AU - Kelsey,S F, PY - 2001/2/24/pubmed PY - 2001/4/6/medline PY - 2001/2/24/entrez SP - 30 EP - 5 JF - Medicine and science in sports and exercise JO - Med Sci Sports Exerc VL - 33 IS - 1 N2 - PURPOSE: This study was conducted to: 1) measure total physical activity levels, including the intensities of the various types of activities, in children and adolescents with CF compared with non-CF healthy control subjects; and 2) determine whether vigorous activity level was related to aerobic fitness and disease status in patients with CF. METHODS: Thirty patients with CF (18 male, 12 female) and 30 control subjects (17 male, 13 female), 7-17 yr old, participated in this study. Habitual physical activity was measured using Kriska's Modifiable Activity Questionnaire (MAQ) and the past year's average of total hours, MET-hours, and vigorous (VIG) hours (>6 METs) of activity per week were determined. Aerobic fitness was determined from peak oxygen uptake (VO2peak) obtained via maximal exercise testing on a cycle ergometer. Standard spirometry was used to measure pulmonary function. Body mass index (BMI) was determined from height and weight measurements. RESULTS: The CF and control groups were similar in age and gender distribution, but the patients were smaller (BMI, 98 vs 112% of predicted) and less aerobically fit (36.5 vs 41.4 mL x kg(-1) x min(-1)). Total and MET-hours of physical activity did not differ between groups; however, the CF group participated in significantly fewer hours of vigorous activities than the control group (2 vs 3.7 h x wk(-1)). In patients with worse lung disease, VIG-h x wk(-1) were significantly related to VO2peak (r = 0.83). CONCLUSION: These results suggest that children with CF engage in less vigorous physical activities than their healthy non-CF peers, despite having good lung function. In view of the progressive nature of the disease, and the association between aerobic fitness and vigorous activity, patients should be encouraged to engage in more vigorous activities that promote aerobic fitness and may ultimately have an impact on survival. SN - 0195-9131 UR - https://www.unboundmedicine.com/medline/citation/11194108/Habitual_physical_activity_in_children_and_adolescents_with_cystic_fibrosis_ L2 - http://Insights.ovid.com/pubmed?pmid=11194108 DB - PRIME DP - Unbound Medicine ER -