Table 2

 Factor analyses: factor loadings after varimax rotation

BAS–upper extremityBAS–lower extremityKANS–upper extremity
Factor 1Factor 2Factor 1Factor 2Factor 1Factor 2
Factor loadings ⩾0.5 are given in bold.
*Eigenvalues refer to the total variance explained by each factor.
†Percentage of the variance explained by each factor before and after varimax rotation.
BAS, musculoskeletal disorders study; KANS, arm, neck, and shoulder study; VDU, visual display unit.
a Standing 0.71 0.08 0.74 −0.15 0.74 0.04
b Sitting−0.770.16−0.700.37−0.650.35
c VDU work−0.720.25−0.710.29−0.670.21
d Walking 0.67 −0.01 0.72 −0.13 0.66 −0.03
e Kneeling/squatting 0.72 0.09 0.77 0.20 0.72 0.16
f Repetitive movement0.09 0.77 0.16 0.74 0.08 0.79
g Twisted posture0.35 0.57 0.48 0.59 0.33 0.64
h Neck bent forward0.14 0.71 0.24 0.69 0.16 0.71
i Turning/bending neck0.15 0.71 0.26 0.70 0.17 0.73
j Wrists bent or twisted0.15 0.73 0.05 0.78 0.11 0.75
k Hands above shoulders 0.65 0.27 0.65 0.29 0.68 0.17
l Hands below knees 0.68 0.22 0.72 0.24 0.76 0.08
m Moving loads (>5 kg) 0.77 0.19 0.80 0.10 0.77 0.15
n Moving loads (>25 kg) 0.62 0.19 0.71 0.09 0.71 0.11
o Exert force with arms 0.82 0.29 0.85 0.19 0.81 0.24
p Maximal force exertions 0.77 0.34 0.74 0.24 0.76 0.27
q Physical hard work 0.77 0.29 0.82 0.21 0.80 0.23
r Static posture−0.20 0.78 −0.14 0.79 −0.17 0.79
s Uncomfortable posture 0.50 0.55 0.61 0.43 0.54 0.47
t Work with vibrating tools0.360.270.420.290.460.20
u Handling peddles with feet0.150.110.270.320.150.12
v Climbing stairs0.380.000.330.130.35−0.06
w Often squatting 0.69 0.22 0.69 0.28 0.67 0.15
x Walking on irregular surfaces0.40−0.02 0.52 0.21 0.52 0.15
y Sitting/moving on knees 0.54 0.05 0.64 0.17 0.58 0.11
z Repetitive tasks arms/hands−0.10 0.77 −0.10 0.78 −0.03 0.77
Eigenvalue*8.973.709.814.039.003.94
Variance explained before rotation†34.5%14.2%37.7%15.2%34.6%15.1%
Variance explained after rotation†30.8%17.9%34.6%18.6%31.9%49.7%
Total variance explained48.7%53.2%49.7%