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Physical activity accumulation along the intensity spectrum differs between children and adults

Rantalainen, T, Ridgers, Nicola, Gao, Y, Belavý, DL, Haapala, EA and Finni, T 2021, Physical activity accumulation along the intensity spectrum differs between children and adults, European Journal of Applied Physiology, vol. 121, pp. 2563-2571, doi: 10.1007/s00421-021-04731-3.

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Title Physical activity accumulation along the intensity spectrum differs between children and adults
Author(s) Rantalainen, T
Ridgers, NicolaORCID iD for Ridgers, Nicola orcid.org/0000-0001-5713-3515
Gao, Y
Belavý, DL
Haapala, EA
Finni, T
Journal name European Journal of Applied Physiology
Volume number 121
Start page 2563
End page 2571
Total pages 9
Publisher Springer
Place of publication Berlin, Germany
Publication date 2021
ISSN 1439-6319
1439-6327
Keyword(s) Actigraphy
Activity
EXERCISE
FITNESS
HEALTH
Life Sciences & Biomedicine
Mean amplitude deviation
Physiology
Science & Technology
SEDENTARY BEHAVIOR
Sport Sciences
Wearable
Summary Abstract Purpose Detailed exploration of physical activity accumulation with fine grading along the intensity spectrum has indicated the potential pragmatic utility of such an approach. However, it is currently unclear what sorts of accumulation patterns along particular intensity bands are found in the children and adult populations. Therefore, we conducted a comparison of activity accumulation in specific intensity bands between four distinct populations: children, adults with sedentary lifestyles, habitual joggers, habitual marathon runners. Methods Free-living waist-worn accelerometry records from 28 children aged 7 to 11, and 61 adults aged 25 to 35 were analysed. Activity intensity was evaluated in 5 s non-overlapping epochs as mean amplitude deviation (MAD) and normalised to acceleration intensities corresponding to walking at 3 metabolic equivalents of a task (METs). Adult data were normalised to 0.091 g MAD based on literature, and data from children to 0.170 g MAD based on laboratory experimentation. The normalised epoch values were divided into 100 intensity gradations. Results Children accumulated more activity in 0.74 to 1.58 normalised acceleration intensities (all p < 0.005) compared to adults. Adult joggers/runners accumulated more activity in normalised acceleration intensities from 7.1 to 11.1 compared to the other groups (p < 0.008). Conclusion The primary bulk of children’s free-living activities are of relatively low intensity not likely to provoke cardiometabolic improvement. These sorts of explorations could be used in informing intervention development aiming at optimising healthy development. Evidence is mounting to justify randomised controlled trials based on intervention targets identified based on exploring the intensity spectrum.
Language eng
DOI 10.1007/s00421-021-04731-3
Indigenous content off
Field of Research 1106 Human Movement and Sports Sciences
HERDC Research category C1 Refereed article in a scholarly journal
Free to Read? Yes
Persistent URL http://hdl.handle.net/10536/DRO/DU:30152368

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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.