Table 3

Correlation coefficients between lumbar and lower extremity joint

Correlation coefficient (p)

Squat lifting

Stoop lifting

Lumbar angle

Lumbar moment

Lumbar angle

Lumbar moment

Lower limb joint angle (deg)

Hip angle

0.219(0.398)

-0.334(0.190)

0.822(0.000)*

0.044(0.864)

Knee angle

0.653(0.005)*

0.018(0.947)

0.375(0.126)

0.525(0.025)

Ankle angle

0.148(0.571)

-0.295(0.250)

-0.750(0.000)*

-0.280(0.261)

Lower limb joint moment (Nm/kg)

Hip moment

0.381(0.131)

0.975(0.000)*

0.287(0.248)

0.875(0.000)*

Knee moment

0.352(0.166)

-0.621(0.008)*

0.672(0.002)*

-0.116(0.646)

Ankle moment

-0.354(0.163)

0.668(0.003)*

-0.802(0.000)*

-0.199(0.428)

*: The correlation coefficient has a statistical significance at p < 0 .01

Hwang et al. BMC Musculoskeletal Disorders 2009 10:15   doi:10.1186/1471-2474-10-15