Cardiovascular responses to different times of walk using standard walker and/or platform walker with wheels in non weight bearing individuals.
Purpose/Hypothesis: The purpose of this study was to examine the cardiovascular responses to different times of walk using standard walker and/or platform walker with wheels in a non weight bearing individuals. Number of Subjects: The study consisted of two phases using male and female physical therapy students, n=16 for Phase I and n = 14 for Phase II. The ages of the subjects range from 22 to 32 years. Materials/Methods: Each phase consisted of two parts. Phase I part I consisted of the participants ambulating with a standard walker (SW) and a platform walker with wheels (PWW) for 2 minutes looking at the differences in heart rate (HR), respiratory rate (RR), and blood pressure (BP) (before and after walk). Part II consisted of the same participants and same vital sign measures but they ambulate for 4 minutes. Phase II part I consisted of the participants ambulating with a SW and a PWW for 6 minutes and part II of Phase II, the same participants ambulated for 12 minutes instead of 6 minutes. The vital signs measured in Phase I were also measured in both times of walk in Phase II. In each phase, the participants ambulated with non weight bearing on one foot and they ambulated at a self selected pace. Slide Write graphic software was used to produce graphical representations of the results. Analysis of variance was used to determine the statistical significance and a confidence interval of 95% or a p value <0.05 was considered significant. Results: Results indicated that Phase I ambulation for 2 or 4 minutes produced no statistically significant difference between before & after measurements of HR, SBP, and RR for SW and PWW. On the other hand, Phase II results indicated that ambulation for 6 or 12 minutes produced a statistically significant difference between before and after measurements of HR, SBP, and RR for SW and PWW and DBP for RW for 12 min (p<0.05). The remaining DBP differences were not significant (p>0.05). There were no significant differences in the DBP in the 6 and 12 minutes walks for SW & platform walker with wheels. Conclusions: In conclusion, our study suggests that ambulation using any of the gait devices in 2 or 4 minutes walks did not significantly increase the vital signs. On the other hand, there were extra cardiovascular demands on the subjects evidenced with the significant increase in the vital signs with any of the devices in 6 or 12 minutes walks. Clinical Relevance: Extra precaution is needed when a patient is ambulating for up to 6 or 12 minutes with either of the gait devices especially in patients with much co-morbidity or at acute stage of a trauma as these time periods increased cardiovascular vital signs. The result shows that titration of times of walk starting at 2 or 4 minutes may be safer for some patients who are at risk of cardiovascular disease.
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|Title Annotation:||Poster Presentations|
|Publication:||Cardiopulmonary Physical Therapy Journal|
|Date:||Dec 1, 2009|
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