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Sleep, Sedentary Time and Physical Activity Levels in Children with Cystic Fibrosis

May Silveira Bianchim, Melitta McNarry Orcid Logo, Alan R. Barker Orcid Logo, Craig A. Williams Orcid Logo, Sarah Denford, Anne E. Holland, Narelle S. Cox, Julianna Dreger, Rachel Evans, Lena Thia, Kelly Mackintosh Orcid Logo

International Journal of Environmental Research and Public Health, Volume: 19, Issue: 12, Start page: 7133

Swansea University Authors: May Silveira Bianchim, Melitta McNarry Orcid Logo, Kelly Mackintosh Orcid Logo

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DOI (Published version): 10.3390/ijerph19127133

Abstract

The aim of this study was to compare the use of generic and cystic fibrosis (CF)-specific cut-points to assess movement behaviours in children and adolescents with CF. Physical activity (PA) was assessed for seven consecutive days using a non-dominant wrist-worn ActiGraph GT9X in 71 children and ado...

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Published in: International Journal of Environmental Research and Public Health
ISSN: 1660-4601
Published: MDPI AG 2022
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URI: https://cronfa.swan.ac.uk/Record/cronfa60175
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Abstract: The aim of this study was to compare the use of generic and cystic fibrosis (CF)-specific cut-points to assess movement behaviours in children and adolescents with CF. Physical activity (PA) was assessed for seven consecutive days using a non-dominant wrist-worn ActiGraph GT9X in 71 children and adolescents (36 girls; 13.5 ± 2.9 years) with mild CF. CF-specific and generic Euclidean norm minus one (ENMO) cut-points were used to determine sedentary time (SED), sleep, light physical activity (LPA), moderate physical activity and vigorous physical activity. The effect of using a CF-specific or generic cut-point on the relationship between PA intensities and lung function was determined. Movement behaviours differed significantly according to the cut-point used, with the CF-specific cut-points resulting in less time asleep (−31.4 min; p < 0.01) and in LPA (−195.1 min; p < 0.001), and more SED and moderate-to-vigorous PA (159.3 and 67.1 min, respec-tively; both p < 0.0001) than the generic thresholds. Lung function was significantly associated with LPA according to the CF-specific cut-points (r = 0.52; p = 0.04). Thresholds developed for healthy populations misclassified PA levels, sleep and SED in children and adolescents with CF. This discrepancy affected the relationship between lung function and PA, which was only apparent when using the CF-specific cut-points. Promoting LPA seems a promising strategy to enhance lung function in children and adolescents with CF.
Item Description: Data are not publicly available due to CGPR regulations and to protect individual privacy but are available from the corresponding author on reasonable request.
Keywords: Threshold; MVPA; accelerometry; lung function; clinical; ENMO
College: Faculty of Science and Engineering
Issue: 12
Start Page: 7133