Table 2:  Bonferroni post test results are shown. Mean differences, standard errors and level of significance are shown for each moment variable and surface pair. An asterisk is indicated for p < 0.05.

 

(I) surface

(J) surface

Mean Difference (I-J)

Std. Error

Sig.(a)

Lower Bound

Upper Bound

Lower Bound

Peak positive grip moment (N*m)

ramp

carpet

.48

.25

.170

carpet

linoleum

.73(*)

.24

.012*

ramp

linoleum

1.20(*)

.26

.000*

Peak negative grip moment (N*m)

carpet

ramp

1.30

.61

.107

linoleum

carpet

.52

.24

.103

linoleum

ramp

1.82(*)

.58

.008*

Average absolute grip moment (N*m)

ramp

carpet

.21

.12

.224

carpet

linoleum

.38(*)

.13

.015*

ramp

linoleum

.58(*)

.12

.000*

Peak positive  hub moment (N*m)

ramp

carpet

3.287(*)

.50

.000*

carpet

linoleum

4.498(*)

.64

.000*

ramp

linoleum

7.785(*)

.76

.000*

Average hub moment (N*m)

ramp

carpet

1.453(*)

.32

.000*

carpet

linoleum

2.939(*)

.32

.000*

ramp

linoleum

4.392(*)

.39

.000*
Based on estimated marginal means
*  The mean difference is significant at the .05 level.
a  Adjustment for multiple comparisons: Bonferroni.