Author/Editor		Erjavec, Tatjana; Vidmar, Gaj; Burger, Helena
Title		Exercise testing as a screening measure for ability to walk with a prosthesis after transfemoral amputation due to peripheral vascular disease
Type		članek
Vol. and No.		Letnik 36, št. 14
Publication year		2014
Volume		str. 1148-1155
ISSN		Y505-8651 - Disability and rehabilitation
Language		eng
Abstract		Purpose: To establish at which exercise-power level is the vascular response, as measured by oxygen uptake, closest to the response during the 6-min walk test (6 MWT) in people after lower-limb amputation due to peripheral vascular disease (PVD). Method: A prospective exploratory cohort study was conducted. 6 MWT and exercise testing using a hand-wheel ergometer (starting at 10 W and increasing the workload by 10 W) were performed in 101 consecutively recruited participants after transfemoral amputation due to PVD. Agreement of oxygen uptake during 6 MWT and exercise testing was compared between the groups defined by the exercise-power level reached. Results: Linear regression through origin with Chow test for comparing slopes indicated that oxygen uptake at 30 W agreed more with 6 MWT than at 20, 40 or 50 W. Analyses of observed differences (one-way ANOVA with post-hoc tests, Jonckheere-Terpstra test) confirmed 30 W to be the recommendable threshold. Conclusions: At the level of 30 W, the oxygen uptake during the exercise was the closest to the 6 MWT, so we estimated that to be the minimum required level for walking using a prosthesis after transfemoral amputation due to PVD.
Descriptors		Amputation Exercise Test Prostheses and Implants Walking
Keywords		oxygen uptake amputacija obremenitveni test proteze in vsadki hoja poraba kisika