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SSWSSouth Shore Web Sites
SSWSScalable Semantic Web Knowledge Base Systems
SSWSSelf-Selected Walking Speed
SSWSSingle Sign-On for Web Systems (Virginia Department of Education)
SSWSScientists for Secure Waste Storage
SSWSScreened Swine Waste Solids
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Abbreviations: 6MWT = 6-minute walk test, DGI = Dynamic Gait Index, FCWS = fastest comfortable walking speed, FMA = Fugl-Meyer Assessment, KE = knee extensor, MVIC = maximum voluntary isometric contraction, PF = plantar flexor, POWER = Poststroke Optimization of Walking using Explosive Resistance, SSWS = self-selected walking speed, VA = Department of Veterans Affairs.
As such we explored the relationship of self-selected walking speed under both constrained and unconstrained conditions to rating of perceived exertion, oxygen cost (per unit work) and rate of oxygen utilization (per unit time).
The second explanation seems to be the better of the two for our results since the change in energy expenditure was not significant enough to be visible due to the subjects' self-selected walking speed, which masked any changes in the correlates of metabolic activity measured.
A limited sample size of four subjects was used for this study; however, the subjects included in this study represented a wide range of function, with self-selected walking speeds ranging from 0.18 to 1.04 m/s.
Variable Mean [+ or -] SD Range Age (yr) (n = 70) 65 [+ or -] 11 42-86 Race (White: Black: Hispanic) 63:5:2 -- Hoehn and Yahr Score 2.2 [+ or -] 0.4 1.5-3.0 UPDRS Total Score 47.1 [+ or -] 12.8 15-89 UPDRS Motor Score 32.3 [+ or -] 9.6 11-59 Body Mass Index (kg/[m.sup.2]) 28.4 [+ or -] 5.0 18.0-41.6 Self-Selected Walking Speed (m/s) 1.1 [+ or -] 0.2 0.5-1.7 6-Minute Walk Distance (m) (n = 64) 414[+ or -]102 122-654 V[O.sub.2] Peak (mL/kg/min) 21.4 [+ or -] 4.2 12.8-32.0 SD = standard deviation, UPDRS = Unified Parkinson's Disease Rating Scale, V[O.sub.2] peak = peak aerobic capacity.
* Energetic cost, respiratory responses, stride rate, respiratory to cycle rate ratio were significantly influenced by the use of hiking poles according to the grade at self-selected walking speed.
In addition, it should be taken into account that in this study subjects were more or less proficient walkers, since they had to be able to walk without aids and (in retrospect) their self-selected walking speeds were relatively high.
The data from this study suggest that gait initiation, increasing walking speed, decreasing walking speed, turning, and gait termination are much more frequent events than steady-state walking at the subject's self-selected walking speed. Altering walking speed and turning corners may comprise a large portion of the challenges of typical community ambulation, although these may not be the most difficult gait challenges.
The goal of the test is to have subjects adopt a self-selected walking speed such that at the end of 6 minutes, they will feel that they could not have walked any farther.
PEQ = Prosthesis Evaluation Questionnaire, SSWS = self-selected walking speed, FPWS = fastest possible walking speed.
For normal self-selected walking speed and regardless of AFO use, control subjects walked significantly faster than the hemiplegic subjects (p < 0.001) (Figure 2(a)).
In addition, these non-adaptive, mechanically passive devices do not incorporate adaptive stance phase control, which requires the amputee Abbreviations: %BW = percent body weight, CWS = controlled walking speed, OHS = opposite heel strike, SD = standard deviation, SSWS = self-selected walking speed, TF = transfemoral, VGRF = vertical ground reaction force.