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Article: Convergent validity of six methods to assess physical activity in daily life

TitleConvergent validity of six methods to assess physical activity in daily life
Authors
KeywordsAccelerometer
Heart rate
International Physical Activity Questionnaire
Log-book
Pedometer
Issue Date2006
PublisherAmerican Physiological Society.
Citation
Journal Of Applied Physiology, 2006, v. 101 n. 5, p. 1328-1334 How to Cite?
AbstractThe purpose was to examine the agreement (convergent validity) between six common measures of habitual physical activity to estimate durations of light, moderate, vigorous, and total activity in a range of free-living individuals. Over 7 consecutive days, 49 ethnic Chinese (30 men, 19 women), aged 15-55 yr, wore a Polar heart rate monitor, a uniaxial MTI, and triaxial Tritrac accelerometer, plus a Yamax pedometer for ≥600 min/day. They also completed a daily physical activity log and on day 8 a Chinese version of the 7-day International Physical Activity Questionnaire. At each level of activity, there was good agreement between the two questionnaire-derived instruments and the two accelerometry-derived instruments, but wide variation across different instruments, with two- to fourfold differences in mean durations often seen. The heart rate monitor overestimated light activity and underestimated moderate activity compared with all other measures. Spearman correlation coefficients were low to moderate (0.2-0.5) across most measures of activity, with the pedometer showing correlations with total activity that were often superior to the other movement sensors. We conclude that, with the use of commonly accepted cut points for defining light, moderate, vigorous, and total activity, little convergent validity across the instruments was evident, suggesting these measures are sampling different levels of habitual physical activity and care is needed when comparing their results. To provide a more stable comparison of activity among different people, across studies, or against accepted physical activity promotion guidelines, further work is needed to fine tune the different cut points across a range of common activity monitors to provide more consistent results during free-living conditions. Copyright © 2006 the American Physiological Society.
Persistent Identifierhttp://hdl.handle.net/10722/87842
ISSN
2015 Impact Factor: 3.004
2015 SCImago Journal Rankings: 1.488
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorMacfarlane, DJen_HK
dc.contributor.authorLee, CCYen_HK
dc.contributor.authorHo, EYKen_HK
dc.contributor.authorChan, KLen_HK
dc.contributor.authorChan, Den_HK
dc.date.accessioned2010-09-06T09:35:11Z-
dc.date.available2010-09-06T09:35:11Z-
dc.date.issued2006en_HK
dc.identifier.citationJournal Of Applied Physiology, 2006, v. 101 n. 5, p. 1328-1334en_HK
dc.identifier.issn8750-7587en_HK
dc.identifier.urihttp://hdl.handle.net/10722/87842-
dc.description.abstractThe purpose was to examine the agreement (convergent validity) between six common measures of habitual physical activity to estimate durations of light, moderate, vigorous, and total activity in a range of free-living individuals. Over 7 consecutive days, 49 ethnic Chinese (30 men, 19 women), aged 15-55 yr, wore a Polar heart rate monitor, a uniaxial MTI, and triaxial Tritrac accelerometer, plus a Yamax pedometer for ≥600 min/day. They also completed a daily physical activity log and on day 8 a Chinese version of the 7-day International Physical Activity Questionnaire. At each level of activity, there was good agreement between the two questionnaire-derived instruments and the two accelerometry-derived instruments, but wide variation across different instruments, with two- to fourfold differences in mean durations often seen. The heart rate monitor overestimated light activity and underestimated moderate activity compared with all other measures. Spearman correlation coefficients were low to moderate (0.2-0.5) across most measures of activity, with the pedometer showing correlations with total activity that were often superior to the other movement sensors. We conclude that, with the use of commonly accepted cut points for defining light, moderate, vigorous, and total activity, little convergent validity across the instruments was evident, suggesting these measures are sampling different levels of habitual physical activity and care is needed when comparing their results. To provide a more stable comparison of activity among different people, across studies, or against accepted physical activity promotion guidelines, further work is needed to fine tune the different cut points across a range of common activity monitors to provide more consistent results during free-living conditions. Copyright © 2006 the American Physiological Society.en_HK
dc.languageengen_HK
dc.publisherAmerican Physiological Society.en_HK
dc.relation.ispartofJournal of Applied Physiologyen_HK
dc.subjectAccelerometeren_HK
dc.subjectHeart rateen_HK
dc.subjectInternational Physical Activity Questionnaireen_HK
dc.subjectLog-booken_HK
dc.subjectPedometeren_HK
dc.titleConvergent validity of six methods to assess physical activity in daily lifeen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=8750-7587&volume=101&spage=1328&epage=1334&date=2006&atitle=Convergent+validity+of+six+methods+to+assess+physical+activity+in+daily+lifeen_HK
dc.identifier.emailMacfarlane, DJ: djmac@hku.hken_HK
dc.identifier.authorityMacfarlane, DJ=rp00934en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1152/japplphysiol.00336.2006en_HK
dc.identifier.pmid16825525-
dc.identifier.scopuseid_2-s2.0-33751168271en_HK
dc.identifier.hkuros129223en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33751168271&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume101en_HK
dc.identifier.issue5en_HK
dc.identifier.spage1328en_HK
dc.identifier.epage1334en_HK
dc.identifier.isiWOS:000242159300011-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridMacfarlane, DJ=7202978517en_HK
dc.identifier.scopusauthoridLee, CCY=15069528400en_HK
dc.identifier.scopusauthoridHo, EYK=35937306100en_HK
dc.identifier.scopusauthoridChan, KL=37004089600en_HK
dc.identifier.scopusauthoridChan, D=15069538600en_HK

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