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Table 2 Factor-loading matrix for the 4 major physical activity patterns identified by principal component analysis

From: Associations between physical activity patterns and dietary patterns in a representative sample of Polish girls aged 13-21 years: a cross-sectional study (GEBaHealth Project)

Type of physical activity Factor 1 Factor 2 Factor 3 Factor 4
‘School/work activity’ ‘Active recreation’ ‘Yard activity’ ‘Walking & domestic activity’
School/work – moderate activity 0.75    
School/work – walking 0.73    
School/work – vigorous activity 0.72    
Leisure-time – moderate activity   0.80   
Leisure-time – vigorous activity   0.73   
Active transportation – cycle   0.61   
Yard work – vigorous activity    0.76  
Yard work – moderate activity    0.79  
Active transportation – walking     0.73
Leisure-time – walking     0.61
Home activity – moderate     0.50
Sitting     
Factor intercorrelations     
Factor 1 (School/work activity)    
Factor 2 (Active recreation) 0.13   
Factor 3 (Yard activity) 0.10 0.13  
Factor 4 (Walking & domestic activity) 0.12 0.06 0.11
Eigenvalues 2.07 1.51 1.43 1.25
Variance explained (%)b 17.3 12.6 11.9 10.4
  1. Factor loadings of ≤ |0.50| are not shown in the table for simplicity. Sorted by loadings from 1st to 4th factor. All data adjusted for sample weights
  2. a Physical activity was expressed in MET-minutes/week
  3. b Total variance in physical activity variables explained by 4 patterns is 52.2 %