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. Author manuscript; available in PMC: 2013 Jan 1.
Published in final edited form as: Gait Posture. 2011 Oct 2;35(1):143–147. doi: 10.1016/j.gaitpost.2011.08.025

Table 1.

Mean (SE) stride frequency and stance time during uphill and downhill walking over a range of speeds.

Speed (m·s−1) Downhill
0° Uphill
−9° −6° −3° 3° 6° 9°
* * *
SF (Hz)† 0.75 0.85 (0.01) 0.83 (0.01) 0.79 (0.01) 0.74 (0.01) 0.71 (0.02) 0.70 (0.02) 0.73 (0.02)
1.25 0.99 (0.01) 0.98 (0.01) 0.95 (0.01) 0.93 (0.01) 0.91 (0.01) 0.91 (0.02) 0.92 (0.01)
1.75 1.10 (0.02) 1.08 (0.02) 1.06 (0.02) 1.05 (0.01) 1.05 (0.01) 1.06 (0.02) 1.07 (0.02)
* *
tstance (s)† 0.75 0.72 (0.04) 0.73 (0.05) 0.78 (0.06) 0.82 (0.04) 0.86 (0.07) 0.89 (0.09) 0.83 (0.08)
1.25 0.60 (0.04) 0.62 (0.04) 0.64 (0.04) 0.64 (0.03) 0.66 (0.04) 0.65 (0.05) 0.65 (0.04)
1.75 0.52 (0.02) 0.55 (0.04) 0.56 (0.02) 0.56 (0.02) 0.55 (0.03) 0.57 (0.05) 0.55 (0.05)

SF = Stride frequency; tstance = Stance time. Compared to level walking, subjects took progressively faster strides at all downhill grades, and spent less time in stance at downhill grades steeper than 3° (p<0.0063). These stride parameters were not significantly different when walking uphill. Asterisks (*) indicate significantly different from level walking.

†

Significant main effect of speed.