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Validity and compar...
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Ekblom, Örjan,1971-Gymnastik- och idrottshögskolan,Björn Ekbloms forskningsgrupp
(författare)
Validity and comparability of a wrist-worn accelerometer in children.
- Artikel/kapitelEngelska2012
Förlag, utgivningsår, omfång ...
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Human Kinetics,2012
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printrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:gih-2237
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https://urn.kb.se/resolve?urn=urn:nbn:se:gih:diva-2237URI
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http://kipublications.ki.se/Default.aspx?queryparsed=id:124304111URI
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https://doi.org/10.1123/jpah.9.3.389DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:art swepub-publicationtype
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BACKGROUND:Wrist-worn accelerometers may provide an alternative to hip-worn monitors for assessing physical activity as they are easier to wear and may thus facilitate long-term recordings. The current study aimed at a) assessing the validity of the Actiwatch (wrist-worn) for estimating energy expenditure, b) determining cut-off values for light, moderate, and vigorous activities, c) studying the comparability between the Actiwatch and the Actigraph (hip-worn), and d) assessing reliability.METHODS:For validity, indirect calorimetry was used as criterion measure. ROC-analyses were applied to identify cut-off values. Comparability was tested by simultaneously wearing of the 2 accelerometers during free-living condition. Reliability was tested in a mechanical shaker.RESULTS:All-over correlation between accelerometer output and energy expenditure were found to be 0.80 (P < .001).Based on ROC-analysis, cut-off values for 1.5, 3, and 6 METs were found to be 80, 262, and 406 counts per 15 s, respectively. Energy expenditure estimates differed between the Actiwatch and the Actigraph (P < .05). The intra- and interinstrument coefficient of variation of the Actiwatch ranged between 0.72% and 8.4%.CONCLUSION:The wrist-worn Actiwatch appears to be valid and reliable for estimating energy expenditure and physical activity intensity in children aged 8 to 10 years.
Ämnesord och genrebeteckningar
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Medicin/Teknik
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Medicine/Technology
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Nyberg, GiselaKarolinska Institutet(Swepub:gih)gisela.nyberg
(författare)
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Ekblom Bak, ElinGymnastik- och idrottshögskolan,Björn Ekbloms forskningsgrupp(Swepub:gih)eline
(författare)
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Ekelund, UlfCambridge University,MRC Epidemiology
(författare)
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Marcus, ClaudeKarolinska Institutet
(författare)
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Gymnastik- och idrottshögskolanBjörn Ekbloms forskningsgrupp
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Journal of Physical Activity and Health: Human Kinetics9:3, s. 389-3931543-30801543-5474
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