Transition versus Continuous Slope Walking: Adaptation to Change Center of Mass Velocity in Young Men
Table 1
Mean (standard deviation) of duration, COM and COP movement parameters during UW and UDW.
Parameter
UW
UDW
value
UW
UDW
value
Stance time (sec)
0.87 (0.13)
0.91 (0.11)
0.183
Duration of subphase (%)
Loading response (TLS)
13.1 (3.0)
11.3 (2.8)
0.103
Midstance (TMS)
61.6 (3.8)
57.1 (10.1)
0.138
Propulsion (TPP)
25.3 (3.4)
31.5 (10.5)
0.044
62.8 (3.1)
53.3 (4.6)
<0.01
23.3 (6.4)
38.7 (9.5)
<0.01
Distance COM-COP (m)
At initial contact
−0.38 (0.04)
−0.34 (0.04)
0.024
At foot flat
−0.29 (0.07)
−0.25 (0.04)
0.081
At heel off
0.08 (0.08)
0.06 (0.10)
0.557
At toe off
0.22 (0.10)
0.33 (0.05)
<0.01
Displacement (m)
COMhorizontal
COMvertical
Total stance
0.84 (0.06)
0.90 (0.04)
<0.01
0.16 (0.03)
0.10 (0.03)
<0.01
D 1
N.A.
0.14 (0.02)
0.13 (0.02)
0.037
D 2
N.A.
0.04 (0.02)
0.02 (0.01)
<0.01
Velocity (m/s)
COMhorizontal
COMvertical
Total stance
1.01 (0.10)
1.02 (0.13)
0.861
0.19 (0.04)
0.11 (0.03)
<0.01
Loading response
1.31 (0.13)
1.20 (0.12)
0.012
0.17 (0.09)
0.32 (0.09)
<0.01
Midstance
0.92 (0.08)
0.91 (0.13)
0.882
0.22 (0.05)
0.16 (0.09)
0.019
Propulsion
1.10 (0.14)
1.18 (0.19)
0.23
0.17 (0.12)
0.07 (0.05)
<0.01
Velocity (m/s)
COPanterior-posterior
COPmedial-lateral
Total stance
0.27 (0.04)
0.22 (0.05)
<0.01
0.03 (0.03)
0.03 (0.04)
0.66
Loading response
0.55 (0.23)
0.49 (0.27)
0.47
0.20 (0.14)
0.24 (0.25)
0.5
Midstance
0.23 (0.07)
0.22 (0.06)
0.44
0.02 (0.01)
0.03 (0.03)
0.26
Propulsion
0.31 (0.09)
0.20 (0.05)
<0.01
0.06 (0.04)
0.04 (0.03)
0.25
Note. The asterisk () represents a significant difference between continuous uphill walking and up-down transition on a triangle-shaped slope (). N.A.: not applicable.
