PMID- 30522567
OWN - NLM
STAT- MEDLINE
DCOM- 20200331
LR  - 20231005
IS  - 1945-7359 (Electronic)
IS  - 1087-3244 (Print)
IS  - 1087-3244 (Linking)
VI  - 43
IP  - 1
DP  - 2019 Jan 1
TI  - Factor Analysis Test of an Ecological Model of Physical Activity Correlates.
PG  - 57-75
LID - 10.5993/AJHB.43.1.6 [doi]
AB  - Objectives: The fit of measured variables into a social-ecological model of 
      correlates of physical activity is rarely tested. In this study, we examined the 
      factor structure of correlates of moderate/vigorous physical activity (MVPA) 
      within a hypothesized social-ecological model. Methods: We measured 46 possible 
      personal, social and environmental correlates of MVPA in 2779 adolescents 
      participating in the Project EAT-2010 study. Confirmatory (CFA) and exploratory 
      factor analyses (EFA) were used to determine the factor structure. Associations 
      of factor scores with self-reported MVPA were calculated with linear regression. 
      Results: A 6-factor CFA model did not show adequate fit. Eight factors were 
      identified using EFA (Root Mean Square Error [RMSEA] 90% CI: 0.053 to 0.055; CFI 
      = 0.82). A factor representing the mix of personal and social correlates showed 
      the strongest association with MVPA. Conclusions: The 8-factor model supports 
      independent clustering of possible environmental correlates of MVPA, but 
      indicates that social and personal correlates may not cluster independently. The 
      factor most strongly correlated with MVPA represented a mix of personal and 
      social correlates. Future work will be needed to better understand how mechanisms 
      for developing physical activity work within and across levels of the 
      social-ecological framework.
FAU - Miller, Jonathan M
AU  - Miller JM
AD  - University of Minnesota, Department of Family Medicine and Community Health, 
      Minneapolis, MN;, Email: mill5687@umn.edu.
FAU - Wolfson, Julian
AU  - Wolfson J
AD  - University of Minnesota, Division of Biostatistics, Minneapolis, MN.
FAU - Laska, Melissa N
AU  - Laska MN
AD  - University of Minnesota, Division of Epidemiology and Community Health, 
      Minneapolis, MN.
FAU - Nelson, Toben F
AU  - Nelson TF
AD  - University of Minnesota, Division of Epidemiology and Community Health, 
      Minneapolis, MN.
FAU - Pereira, Mark A
AU  - Pereira MA
AD  - University of Minnesota, Division of Epidemiology and Community Health, 
      Minneapolis, MN.
FAU - Neumark-Sztainer, Dianne
AU  - Neumark-Sztainer D
AD  - University of Minnesota, Division of Epidemiology and Community Health, 
      Minneapolis, MN.
LA  - eng
GR  - R01 HL084064/HL/NHLBI NIH HHS/United States
GR  - T32 CA163184/CA/NCI NIH HHS/United States
PT  - Journal Article
PT  - Research Support, N.I.H., Extramural
PL  - England
TA  - Am J Health Behav
JT  - American journal of health behavior
JID - 9602338
SB  - IM
MH  - Adolescent
MH  - *Adolescent Behavior
MH  - *Exercise
MH  - Factor Analysis, Statistical
MH  - Female
MH  - Humans
MH  - Male
MH  - *Models, Theoretical
MH  - Reproducibility of Results
MH  - Self Report
PMC - PMC6296241
MID - NIHMS990308
COIS- Conflict of Interest Statement The authors report no conflicts of interest.
EDAT- 2018/12/14 06:00
MHDA- 2020/04/01 06:00
PMCR- 2020/01/01
CRDT- 2018/12/08 06:00
PHST- 2018/12/08 06:00 [entrez]
PHST- 2018/12/14 06:00 [pubmed]
PHST- 2020/04/01 06:00 [medline]
PHST- 2020/01/01 00:00 [pmc-release]
AID - 10.5993/AJHB.43.1.6 [doi]
PST - ppublish
SO  - Am J Health Behav. 2019 Jan 1;43(1):57-75. doi: 10.5993/AJHB.43.1.6.