Tracking of physical activity with accelerometers over a 2-year time period
(2013) In Journal of Physical Activity and Health 10(2). p.241-248- Abstract
Background: Limited data exist of tracking and changes in accelerometer-measured physical activity in children. Methods: Physical activity was assessed by accelerometers for 4 days in 167 children (boys, n = 90; girls n = 77) age 9.8 ± 0.6 years. Follow-up measurement was made 2.0 ± 0.1 yrs later (range 1.9-2.1 yrs). General physical activity (GPA) was defined as mean count/minute. Minutes of inactivity; light, moderate, and vigorous physical activity (LMVPA); moderate and vigorous physical activity (MVPA); and vigorous physical activity (VPA) per day were calculated both as absolute values and as percentage of total registration time. Results: Spearman rank order correlation indicated low tracking of MVPA and VPA in girls (r =... (More)
Background: Limited data exist of tracking and changes in accelerometer-measured physical activity in children. Methods: Physical activity was assessed by accelerometers for 4 days in 167 children (boys, n = 90; girls n = 77) age 9.8 ± 0.6 years. Follow-up measurement was made 2.0 ± 0.1 yrs later (range 1.9-2.1 yrs). General physical activity (GPA) was defined as mean count/minute. Minutes of inactivity; light, moderate, and vigorous physical activity (LMVPA); moderate and vigorous physical activity (MVPA); and vigorous physical activity (VPA) per day were calculated both as absolute values and as percentage of total registration time. Results: Spearman rank order correlation indicated low tracking of MVPA and VPA in girls (r = .25-0.33, P < .05), and low-moderate tracking of GPA, inactivity, LMVPA, MVPA and VPA in boys (r = .23-0.40, P < .05). Time in inactivity increased at follow-up by 5%-14%. Most of the assessed physical activity variables were decreased at follow-up by 6% to 30%. Conclusions: Physical activity tracks at a low-moderate degree from age 10-12 years, which confirm previous investigations that have used self-report assessments. The lowmoderate tracking of physical activity variables indicate that those who were most active initially remained most active. Increasing inactive behavior was observed and that several other physical activity variables were decreased at follow-up.
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- author
- Dencker, Magnus LU ; Tanha, Tina LU ; Wollmer, Per LU ; Karlsson, Magnus K. LU ; Andersen, Lars Bo and Thorsson, Ola LU
- organization
- publishing date
- 2013-01-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Accelerometry, Children, Daily physical activity
- in
- Journal of Physical Activity and Health
- volume
- 10
- issue
- 2
- pages
- 241 - 248
- publisher
- Human Kinetics
- external identifiers
-
- scopus:84873330363
- ISSN
- 1543-3080
- DOI
- 10.1123/jpah.10.2.241
- language
- English
- LU publication?
- no
- id
- 3a2d9e82-0185-4f31-b9dc-9b733a4140f6
- date added to LUP
- 2019-05-21 21:02:18
- date last changed
- 2022-04-10 17:00:19
@article{3a2d9e82-0185-4f31-b9dc-9b733a4140f6, abstract = {{<p>Background: Limited data exist of tracking and changes in accelerometer-measured physical activity in children. Methods: Physical activity was assessed by accelerometers for 4 days in 167 children (boys, n = 90; girls n = 77) age 9.8 ± 0.6 years. Follow-up measurement was made 2.0 ± 0.1 yrs later (range 1.9-2.1 yrs). General physical activity (GPA) was defined as mean count/minute. Minutes of inactivity; light, moderate, and vigorous physical activity (LMVPA); moderate and vigorous physical activity (MVPA); and vigorous physical activity (VPA) per day were calculated both as absolute values and as percentage of total registration time. Results: Spearman rank order correlation indicated low tracking of MVPA and VPA in girls (r = .25-0.33, P < .05), and low-moderate tracking of GPA, inactivity, LMVPA, MVPA and VPA in boys (r = .23-0.40, P < .05). Time in inactivity increased at follow-up by 5%-14%. Most of the assessed physical activity variables were decreased at follow-up by 6% to 30%. Conclusions: Physical activity tracks at a low-moderate degree from age 10-12 years, which confirm previous investigations that have used self-report assessments. The lowmoderate tracking of physical activity variables indicate that those who were most active initially remained most active. Increasing inactive behavior was observed and that several other physical activity variables were decreased at follow-up.</p>}}, author = {{Dencker, Magnus and Tanha, Tina and Wollmer, Per and Karlsson, Magnus K. and Andersen, Lars Bo and Thorsson, Ola}}, issn = {{1543-3080}}, keywords = {{Accelerometry; Children; Daily physical activity}}, language = {{eng}}, month = {{01}}, number = {{2}}, pages = {{241--248}}, publisher = {{Human Kinetics}}, series = {{Journal of Physical Activity and Health}}, title = {{Tracking of physical activity with accelerometers over a 2-year time period}}, url = {{http://dx.doi.org/10.1123/jpah.10.2.241}}, doi = {{10.1123/jpah.10.2.241}}, volume = {{10}}, year = {{2013}}, }