Article: Physical activity measurement using MTI (actigraph) among children with cerebral palsy

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TitlePhysical activity measurement using MTI (actigraph) among children with cerebral palsy
AuthorsCapio, CM1
Sit, CH1
Abernethy, B1
KeywordsCerebral palsy
Child
Heart rate
Rehabilitation
Issue Date2010
PublisherWB Saunders Co. The Journal's web site is located at http://www.elsevier.com/locate/apmr
CitationArchives Of Physical Medicine And Rehabilitation, 2010, v. 91 n. 8, p. 1283-1290 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.apmr.2010.04.026
AbstractObjective: To investigate the validity of MTI accelerometer as a physical activity (PA) measurement instrument for children with cerebral palsy (CP). Design: Participants were classified within Gross Motor Function Classification System I to III and took part in 2 activity sessions: (1) a structured activity protocol with increasing intensities and (2) a free play session. Concurrent measurements of activity counts, heart rate, and observed physical activity were performed. Setting: Data were collected on normal school days in special schools within the participants' 30-minute break period. Participants: Convenience sample of children with CP (N=31; 17 girls, 14 boys) age between 6 and 14 years (mean ± SD, 9.71±2.52y). Interventions: Not applicable. Main Outcome Measures: MTI measured activity counts, a monitoring device measured heart rate, and the System for Observing Fitness Instruction Time (SOFIT) was used for direct PA observation. Results: There were strong relationships between MTI and SOFIT (r=.75; R 2=.56; P<.001) and heart rate monitor (HRM) and SOFIT (r=.65; R 2=.43; P<.001) data in structured activities, but the difference between these 2 correlation coefficients was not significant (P=.46). In free play activities, the association between MTI and SOFIT data (r=.67; R 2=.45; P<.001) was significantly stronger (P=.01) than that between heart rate and SOFIT data (r=.14; R 2=.02; P<.001) . Bland-Altman plots showed better agreement between observed SOFIT and MTI-predicted SOFIT data than observed SOFIT and HRM-predicted SOFIT data from the linear regression analysis. Conclusions: The findings suggest that the MTI appears to be a valid instrument for measuring raw activity volume among children with CP and is suitable for use in studies attempting to characterize the PA of this population. © 2010 American Congress of Rehabilitation Medicine.
ISSN0003-9993
2011 Impact Factor: 2.282
2011 SCImago Journal Rankings: 0.136
DOIhttp://dx.doi.org/10.1016/j.apmr.2010.04.026
ISI Accession Number IDWOS:000281178900019
ReferencesReferences in Scopus
DC Field
Value
dc.contributor.authorCapio, CM
dc.contributor.authorSit, CH
dc.contributor.authorAbernethy, B
dc.date.accessioned2010-10-31T11:44:00Z
dc.date.available2010-10-31T11:44:00Z
dc.date.issued2010
dc.description.abstractObjective: To investigate the validity of MTI accelerometer as a physical activity (PA) measurement instrument for children with cerebral palsy (CP). Design: Participants were classified within Gross Motor Function Classification System I to III and took part in 2 activity sessions: (1) a structured activity protocol with increasing intensities and (2) a free play session. Concurrent measurements of activity counts, heart rate, and observed physical activity were performed. Setting: Data were collected on normal school days in special schools within the participants' 30-minute break period. Participants: Convenience sample of children with CP (N=31; 17 girls, 14 boys) age between 6 and 14 years (mean ± SD, 9.71±2.52y). Interventions: Not applicable. Main Outcome Measures: MTI measured activity counts, a monitoring device measured heart rate, and the System for Observing Fitness Instruction Time (SOFIT) was used for direct PA observation. Results: There were strong relationships between MTI and SOFIT (r=.75; R 2=.56; P<.001) and heart rate monitor (HRM) and SOFIT (r=.65; R 2=.43; P<.001) data in structured activities, but the difference between these 2 correlation coefficients was not significant (P=.46). In free play activities, the association between MTI and SOFIT data (r=.67; R 2=.45; P<.001) was significantly stronger (P=.01) than that between heart rate and SOFIT data (r=.14; R 2=.02; P<.001) . Bland-Altman plots showed better agreement between observed SOFIT and MTI-predicted SOFIT data than observed SOFIT and HRM-predicted SOFIT data from the linear regression analysis. Conclusions: The findings suggest that the MTI appears to be a valid instrument for measuring raw activity volume among children with CP and is suitable for use in studies attempting to characterize the PA of this population. © 2010 American Congress of Rehabilitation Medicine.
dc.description.natureLink_to_subscribed_fulltext
dc.identifier.citationArchives Of Physical Medicine And Rehabilitation, 2010, v. 91 n. 8, p. 1283-1290 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.apmr.2010.04.026
dc.identifier.doihttp://dx.doi.org/10.1016/j.apmr.2010.04.026
dc.identifier.epage1290
dc.identifier.hkuros175355
dc.identifier.hkuros182599
dc.identifier.hkuros185745
dc.identifier.isiWOS:000281178900019
dc.identifier.issn0003-9993
2011 Impact Factor: 2.282
2011 SCImago Journal Rankings: 0.136
dc.identifier.issue8
dc.identifier.openurl
dc.identifier.pmid20684912
dc.identifier.scopuseid_2-s2.0-77955601272
dc.identifier.spage1283
dc.identifier.urihttp://hdl.handle.net/10722/125653
dc.identifier.volume91
dc.languageeng
dc.publisherWB Saunders Co. The Journal's web site is located at http://www.elsevier.com/locate/apmr
dc.publisher.placeUnited States
dc.relation.ispartofArchives of Physical Medicine and Rehabilitation
dc.relation.referencesReferences in Scopus
dc.subject.meshActigraphy - methods
dc.subject.meshCerebral Palsy - physiopathology
dc.subject.meshChild
dc.subject.meshDisability Evaluation
dc.subject.meshExercise - physiology
dc.subjectCerebral palsy
dc.subjectChild
dc.subjectHeart rate
dc.subjectRehabilitation
dc.titlePhysical activity measurement using MTI (actigraph) among children with cerebral palsy
dc.typeArticle
Author Affiliations
  1. The University of Hong Kong