Table 4

Variance inflation factor (VIF) testing results for multicollinearity

Predictor labelVIF value
Weight1.9922
Sum of 4 sites skinfold thickness (biceps, triceps, subscapular suprailiac)2.2473
Time in activity1.3662
Match32.2477*
Training39.6572*
Conditioning22.1688*
Sandastro27.3124*
Grass31.6022*
Artificial turf 3G14.9991*
Previous injuries1.3860
In-season injuries1.5483
Cumulative match volume103.6455*
Cumulative match grass volume110.9217*
Total all training8.2872
Total training volume excluding futsal and conditioning12.8611*
Total training Artificial turf 3G volume excluding futsal and conditioning3.4659
Total training futsal volume2.6395
Total training grass volume excluding futsal and conditioning9.0142
  • *Indicates high level of multicollinearity >10.