. Author manuscript; available in PMC: 2017 Feb 28.

Published in final edited form as: IEEE Access. 2016 Feb 29;4:893–904. doi: 10.1109/ACCESS.2016.2535661

TABLE II.

P-values for the comparison between perturbed and non-perturbed gait cycle duration

	100 BWD	100 FWD	250 BWD	250 FWD
P_% < NP_%	<<0.05	1.000	<<0.05	0.997
P_% > NP_%	1.000	<<0.05	0.999	<<0.05

The p-values are shown for the comparison between the time duration (in percentage of the gait cycle) of perturbed and non-perturbed gait cycles across different types of perturbations. The null hypothesis is defined as P_% = NP_% which means that the percentage change produced by a perturbation is zero. P_% < NP_% represents the alternative hypothesis that the perturbed gait cycle was shorter than the non-perturbed gait cycle, whereas P_% > NP_% represents the opposite alternative hypothesis.