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Tracking of Physical Activity with Accelerometers Over a Two-year Time Period.

Dencker, Magnus LU ; Tanha, Tina LU ; Wollmer, Per LU ; Karlsson, Magnus; Andersen, Lars Bo and Thorsson, Ola LU (2013) In Journal of Physical Activity & Health 10(2). p.241-248
Abstract
BACKGROUND: Limited data exists of tracking and changes in accelerometer measured physical activity in children.



METHODS: Physical activity was assessed by accelerometers for four days in 167 children (boys n=90, girls n=77), aged 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... (More)
BACKGROUND: Limited data exists of tracking and changes in accelerometer measured physical activity in children.



METHODS: Physical activity was assessed by accelerometers for four days in 167 children (boys n=90, girls n=77), aged 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=0.25-0.33, P<0.05), and low-moderate tracking of GPA, inactivity, LMVPA, MVPA and VPA in boys (r=0.23-0.40, P<0.05). Time in inactivity increased at follow-up by 5-14%. Most of the assessed physical activity variables were decreased at follow-up by 6-30%.



CONCLUSIONS: Physical activity tracks at a low-moderate degree from age 10 to age 12 years, which confirm previous investigations that have used self-report assessments. The low-moderate tracking of physical activity variables indicate that those who were most active initially remained most active. Increasing inactive behaviour was observed and that several other physical activity variables were decreased at follow-up. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Physical Activity & Health
volume
10
issue
2
pages
241 - 248
publisher
Human Kinetics, Inc.
external identifiers
  • wos:000315560300013
  • pmid:22396324
ISSN
1543-5474
language
English
LU publication?
yes
id
da9cfc5d-a1ca-46cc-a72f-5c5c8db53fd2 (old id 2432180)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/22396324?dopt=Abstract
date added to LUP
2012-04-03 09:10:37
date last changed
2018-11-21 19:45:27
@article{da9cfc5d-a1ca-46cc-a72f-5c5c8db53fd2,
  abstract     = {BACKGROUND: Limited data exists of tracking and changes in accelerometer measured physical activity in children. <br/><br>
<br/><br>
METHODS: Physical activity was assessed by accelerometers for four days in 167 children (boys n=90, girls n=77), aged 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. <br/><br>
<br/><br>
RESULTS: Spearman rank order correlation indicated low tracking of MVPA and VPA in girls (r=0.25-0.33, P&lt;0.05), and low-moderate tracking of GPA, inactivity, LMVPA, MVPA and VPA in boys (r=0.23-0.40, P&lt;0.05). Time in inactivity increased at follow-up by 5-14%. Most of the assessed physical activity variables were decreased at follow-up by 6-30%. <br/><br>
<br/><br>
CONCLUSIONS: Physical activity tracks at a low-moderate degree from age 10 to age 12 years, which confirm previous investigations that have used self-report assessments. The low-moderate tracking of physical activity variables indicate that those who were most active initially remained most active. Increasing inactive behaviour was observed and that several other physical activity variables were decreased at follow-up.},
  author       = {Dencker, Magnus and Tanha, Tina and Wollmer, Per and Karlsson, Magnus and Andersen, Lars Bo and Thorsson, Ola},
  issn         = {1543-5474},
  language     = {eng},
  number       = {2},
  pages        = {241--248},
  publisher    = {Human Kinetics, Inc.},
  series       = {Journal of Physical Activity & Health},
  title        = {Tracking of Physical Activity with Accelerometers Over a Two-year Time Period.},
  volume       = {10},
  year         = {2013},
}