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. Author manuscript; available in PMC: 2016 Apr 13.
Published in final edited form as: J Biomech. 2015 Feb 25;48(6):921–929. doi: 10.1016/j.jbiomech.2015.02.024

Table 2. Mean (SE) of Joint moments, powers and Minimum toe clearance-related dependent measures.

Domain Dependent measure Lower-level step Higher-level step
C1 C2 C3 C4 C1 C2 C3 C4
Joint Moments and Powers Peak ankle dorsiflexion moment (Nm/kg) 0.04 (0.01) 0.04 (0.01) 0.04 (0.01) 0.04 (0.01) 0.07 (0.02) 0.06 (0.01) 0.06 (0.02) 0.06 (0.02)
Peak ankle plantar flexion moment (Nm/kg) 1.65 (0.07) 1.52 (0.07) 1.64 (0.06) 1.52 (0.06) 1.85 (0.08) 1.71 (0.09) 1.83 (0.08) 1.70 (0.07)
Peak knee extensor moment (Nm/kg) 0.41 (0.04) 0.46 (0.03) 0.43 (0.04) 0.46 (0.03) 0.50 (0.05) 0.50 (0.04) 0.50 (0.05) 0.50 (0.04)
Peak knee flexor moment (Nm/kg) 1.07 (0.08) 1.02 (0.07) 1.07 (0.09) 0.99 (0.06) 0.92 (0.08) 0.91 (0.06) 0.93 (0.07) 0.88 (0.06)
Peak hip extensor moment (Nm/kg) 0.36 (0 06) 0.33 (004) 0.38 (0.05) 0.35 (0.04) 0.27 (0.05) 0.25 (0.05) 0.27 (0.05) 0.23 (0.05)
Peak hip flexor moment (Nm/kg) 0.72 (0.04) 0.65 (0.04) 0.71 (0.04) 0.66 (0.05) 0.72 (0.05) 0.66 (0.07) 0.71 (0.07) 0.67 (0.07)
Peak ankle power absorbed (W/kg) 0.37 (0.06) 0.28 (0.02) 0.36 (0.03) 0.31 (0.03) 0.59 (0.11) 0.34 (0.06) 0.54 (0.09) 0.37 (0.08)
Peak ankle power produced (W/kg) 3.78 (0.46) 3.43 (0.38) 3.83 (0.40) 3.23 (0.31) 3.84 (0.46) 3.62 (0.42) 3.77 (0.44) 3.38 (0.39)
Peak knee power produced (W/kg) 1.70 (0.20) 1.45 (0.11) 1.75 (0.16) 1.52 (0.14) 1.71 (0.16) 1.57 (0.13) 1.73 (0.13) 1.52 (0.13)
Peak hip power produced (W/kg) 1.10 (0.07) 0.88 (0.07) 1.13 (0.09) 0.90 (0.09) 1.20 (0.10) 0.97 (0.11) 1.19 (0.10) 0.95 (0.09)
Peak hip power absorbed (W/kg) 0.32 (0.12) 0.26 (0.13) 0.32 (0.11) 0.22 (0.09) 0.26 (0.08) 0.20 (0.06) 0.25 (0.07) 0.22 (0.06)
Minimum Toe Clearance Anterior (mm) 22.32 (0.89) 21.38 (0.90) 23.98 (1.15) 21.68 (1.01) 25.19 (0.96) 25.36 (1.14) 24.87 (0.82) 25.69 (1.10)
Vertical (mm) 10.61 (0.52) 10.30 (0.43) 11.00 (0.50) 9.96 (0.45) 8.70 (0.25) 8.30 (0.32) 8.45 (0.39) 8.51 (0.32)
Speed Average speed (mm/s) 656.91 (33.87) 523.74 (43.13) 646.53 (33.47) 505.22 (35.45) 617.74 (32.71) 505.47 (42.47) 609.33 (26.83) 483.83 (36.20)

C1 - ascending the stairs without counting and carrying a box, C2 - ascending the stairs while counting backwards and not carrying a box, C3 - ascending the stairs while carrying a box and not counting, C4 -ascending the stairs while counting backwards and carrying a box