The Physical Behaviour Intensity Spectrum and Body Mass Index in School-Aged Youth: A Compositional Analysis of Pooled Individual Participant Data.

Autor: Fairclough SJ; Movement Behaviours, Nutrition, Health & Wellbeing Research Group, Department Sport & Physical Activity, Edge Hill University, St Helens Road, Ormskirk L39 4QP, UK., Hurter L; Research Institute of Sport and Exercise Science, Liverpool John Moores University, Liverpool L3 3AF, UK., Dumuid D; Alliance for Research in Exercise, Nutrition and Activity, Allied Health and Human Performance, University of South Australia, Adelaide, SA 5001, Australia.; Centre for Adolescent Health, Murdoch Children's Research Institute, Melbourne, VIC 3052, Australia., Gába A; Faculty of Physical Culture, Palacký University Olomouc, CZ 779 00 Olomouc, Czech Republic., Rowlands AV; Diabetes Research Centre, Leicester General Hospital, University of Leicester, Gwendolen Road, Leicester LE5 4PW, UK.; National Institute for Health Research (NIHR) Leicester Biomedical Research Centre (BRC), University Hospitals of Leicester NHS Trust and the University of Leicester, Leicester LE5 4PW, UK., Cruz BDP; Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, 5230 Odense, Denmark., Cox A; Movement Behaviours, Nutrition, Health & Wellbeing Research Group, Department Sport & Physical Activity, Edge Hill University, St Helens Road, Ormskirk L39 4QP, UK., Crotti M; Research Institute of Sport and Exercise Science, Liverpool John Moores University, Liverpool L3 3AF, UK., Foweather L; Research Institute of Sport and Exercise Science, Liverpool John Moores University, Liverpool L3 3AF, UK., Graves LEF; Research Institute of Sport and Exercise Science, Liverpool John Moores University, Liverpool L3 3AF, UK., Jones O; Research Institute of Sport and Exercise Science, Liverpool John Moores University, Liverpool L3 3AF, UK., McCann DA; Research Institute of Sport and Exercise Science, Liverpool John Moores University, Liverpool L3 3AF, UK., Noonan RJ; Department of Psychology, University of Liverpool, Liverpool L69 7ZA, UK., Owen MB; Department of Applied Health and Social Care and Social Work, Faculty of Health, Social Care and Medicine, Edge Hill University, Ormskirk L39 4QP, UK., Rudd JR; Department of Teacher Education and Outdoor Studies, Norwegian School of Sport Sciences, 0863 Oslo, Norway., Taylor SL; Research Institute of Sport and Exercise Science, Liverpool John Moores University, Liverpool L3 3AF, UK., Tyler R; Movement Behaviours, Nutrition, Health & Wellbeing Research Group, Department Sport & Physical Activity, Edge Hill University, St Helens Road, Ormskirk L39 4QP, UK., Boddy LM; Research Institute of Sport and Exercise Science, Liverpool John Moores University, Liverpool L3 3AF, UK.
Jazyk: angličtina
Zdroj: International journal of environmental research and public health [Int J Environ Res Public Health] 2022 Jul 19; Vol. 19 (14). Date of Electronic Publication: 2022 Jul 19.
DOI: 10.3390/ijerph19148778
Abstrakt: We examined the compositional associations between the intensity spectrum derived from incremental acceleration intensity bands and the body mass index (BMI) z-score in youth, and investigated the estimated differences in BMI z-score following time reallocations between intensity bands. School-aged youth from 63 schools wore wrist accelerometers, and data of 1453 participants (57.5% girls) were analysed. Nine acceleration intensity bands (range: 0−50 mg to ≥700 mg) were used to generate time-use compositions. Multivariate regression assessed the associations between intensity band compositions and BMI z-scores. Compositional isotemporal substitution estimated the differences in BMI z-score following time reallocations between intensity bands. The ≥700 mg intensity bandwas strongly and inversely associated with BMI z-score (p < 0.001). The estimated differences in BMI z-score when 5 min were reallocated to and from the ≥700 mg band and reallocated equally among the remaining bands were −0.28 and 0.44, respectively (boys), and −0.39 and 1.06, respectively (girls). The time in the ≥700 mg intensity band was significantly associated with BMI z-score, irrespective of sex. When even modest durations of time in this band were reallocated, the asymmetrical estimated differences in BMI z-score were clinically meaningful. The findings highlight the utility of the full physical activity intensity spectrum over a priori-determined absolute intensity cut-point approaches.
Databáze: MEDLINE