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

2022-06-10

Bianchim, Mayara S

McNarry, Melitta A

Barker, Alan R

Williams, Craig A

Denford, Sarah

Holland, Anne E

Cox, Narelle S

Dreger, Julianna

Evans, Rachel

Thia, Lena

Mackintosh, Kelly A

ENMO

MVPA

accelerometry

clinical

lung function

threshold

Journal Article

0000-0003-0813-7477

0000-0001-8610-5417

0000-0002-1740-6248

0000-0003-0355-6357

0000-0003-2061-845X

0000-0002-6977-1028

10.3390/ijerph19127133

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, respectively; 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.

link

International journal of environmental research and public health 2022; 19(12): 7133

International journal of environmental research and public health