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Evaluation of the incidental and planned activity questionnaire for older people

Kim Delbaere UGent, Klaus Hauer and Stephen R Lord (2010) BRITISH JOURNAL OF SPORTS MEDICINE. 44(14). p.1029-1034
abstract
Objective There is a need for a measure of physical activity that assesses low, basic and high-intensity activities suitable for use in ageing research including falls prevention trials. This study performed a formal validation of the incidental and planned exercise questionnaire (IPEQ) by investigating its overall structure and measurement properties. Design Cross-sectional survey. Setting Community sample. Participants 500 older people (mean age 77.4 years, SD 6.08). Main Outcome Measures The IPEQ was administered as part of a longer assessment in two different postal self-completion formats; one for estimating physical activity during the past week (IPEQ-W) and one for estimating average weekly physical activity over the past 3 months (IPEQ-WA). Test-retest reliability was assessed by the re-administration of the instruments one week later in a subsample of 80 respondents. Results Both IPEQ versions had good measurement properties, but overall the IPEQ-WA performed better than the IPEQ-W. Rasch analyses indicated the IPEQ-WA had an excellent overall fit. Analysis of the internal structure supported the unidimensionality of the scale with an acceptable internal consistency. The content representation of the items revealed three categories (low, moderate and high levels of physical activity), with a good contribution of items by threshold. The IPEQ-WA had excellent test-retest reliability, intraclass correlation coefficient 0.87) and was able to discriminate differences in physical activity levels between groups differentiated by sex, age and fall risk factors. Conclusions The IPEQ has excellent psychometric properties and assesses the level of physical activity relating to both basic and more demanding activities. Further research is required to confirm sensitivity to change.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
CONTROLLED-TRIAL, PHYSICAL-ACTIVITY, PREVENTION TRIALS, FALLS, WOMEN, ADULTS, PROGRAM, RISK, SCALE
journal title
BRITISH JOURNAL OF SPORTS MEDICINE
Br. J. Sports Med.
volume
44
issue
14
pages
1029 - 1034
Web of Science type
Article
Web of Science id
000285920300009
JCR category
SPORT SCIENCES
JCR impact factor
3.545 (2010)
JCR rank
6/79 (2010)
JCR quartile
1 (2010)
ISSN
0306-3674
DOI
10.1136/bjsm.2009.060350
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
953805
handle
http://hdl.handle.net/1854/LU-953805
date created
2010-05-27 06:06:26
date last changed
2011-02-17 12:14:27
@article{953805,
  abstract     = {Objective There is a need for a measure of physical activity that assesses low, basic and high-intensity activities suitable for use in ageing research including falls prevention trials. This study performed a formal validation of the incidental and planned exercise questionnaire (IPEQ) by investigating its overall structure and measurement properties.
Design Cross-sectional survey.
Setting Community sample.
Participants 500 older people (mean age 77.4 years, SD 6.08).
Main Outcome Measures The IPEQ was administered as part of a longer assessment in two different postal self-completion formats; one for estimating physical activity during the past week (IPEQ-W) and one for estimating average weekly physical activity over the past 3 months (IPEQ-WA). Test-retest reliability was assessed by the re-administration of the instruments one week later in a subsample of 80 respondents.
Results Both IPEQ versions had good measurement properties, but overall the IPEQ-WA performed better than the IPEQ-W. Rasch analyses indicated the IPEQ-WA had an excellent overall fit. Analysis of the internal structure supported the unidimensionality of the scale with an acceptable internal consistency. The content representation of the items revealed three categories (low, moderate and high levels of physical activity), with a good contribution of items by threshold. The IPEQ-WA had excellent test-retest reliability, intraclass correlation coefficient 0.87) and was able to discriminate differences in physical activity levels between groups differentiated by sex, age and fall risk factors.
Conclusions The IPEQ has excellent psychometric properties and assesses the level of physical activity relating to both basic and more demanding activities. Further research is required to confirm sensitivity to change.},
  author       = {Delbaere, Kim and Hauer, Klaus and Lord, Stephen R},
  issn         = {0306-3674},
  journal      = {BRITISH JOURNAL OF SPORTS MEDICINE},
  keyword      = {CONTROLLED-TRIAL,PHYSICAL-ACTIVITY,PREVENTION TRIALS,FALLS,WOMEN,ADULTS,PROGRAM,RISK,SCALE},
  language     = {eng},
  number       = {14},
  pages        = {1029--1034},
  title        = {Evaluation of the incidental and planned activity questionnaire for older people},
  url          = {http://dx.doi.org/10.1136/bjsm.2009.060350},
  volume       = {44},
  year         = {2010},
}

Chicago
Delbaere, Kim, Klaus Hauer, and Stephen R Lord. 2010. “Evaluation of the Incidental and Planned Activity Questionnaire for Older People.” British Journal of Sports Medicine 44 (14): 1029–1034.
APA
Delbaere, K., Hauer, K., & Lord, S. R. (2010). Evaluation of the incidental and planned activity questionnaire for older people. BRITISH JOURNAL OF SPORTS MEDICINE, 44(14), 1029–1034.
Vancouver
1.
Delbaere K, Hauer K, Lord SR. Evaluation of the incidental and planned activity questionnaire for older people. BRITISH JOURNAL OF SPORTS MEDICINE. 2010;44(14):1029–34.
MLA
Delbaere, Kim, Klaus Hauer, and Stephen R Lord. “Evaluation of the Incidental and Planned Activity Questionnaire for Older People.” BRITISH JOURNAL OF SPORTS MEDICINE 44.14 (2010): 1029–1034. Print.