Zorica Suica1, Jacqueline Romkes2, Amir Tal3, Clare Maguire4. 1. Research Department, Reha Rheinfelden, Salinenstrasse 98, 4310 Rheinfelden, Switzerland; Bern University of Applied Sciences, Health, Bern, Switzerland; Bildungszentrum Gesundheit Basel-Stadt, Studiengang Physiotherapie, Münchenstein, Switzerland. Electronic address: Z.Suica@reha-rhf.ch. 2. Laboratory for Movement Analysis, University Children's Hospital, Basel, Switzerland. 3. Bern University of Applied Sciences, Health, Bern, Switzerland. 4. Bildungszentrum Gesundheit Basel-Stadt, Studiengang Physiotherapie, Münchenstein, Switzerland; Caphri Research School, P.O. Box 616, 6200 MD, Maastricht University, the Netherlands.
Abstract
OBJECTIVE: To investigate the immediate effect of four-wheeled- walker(rollator)walking on lower-limb muscle activity and trunk-sway in healthy subjects. METHODS: In this cross-sectional design electromyographic (EMG) data was collected in six lower-limb muscle groups and trunk-sway was measured as peak-to-peak angular displacement of the centre-of-mass (level L2/3) in the sagittal and frontal-planes using the SwayStar balance system. 19 subjects walked at self-selected speed firstly without a rollator then in randomised order 1. with rollator 2. with rollator with increased weight-bearing. RESULTS: Rollator-walking caused statistically significant reductions in EMG activity in lower-limb muscle groups and effect-sizes were medium to large. Increased weight-bearing increased the effect. Trunk-sway in the sagittal and frontal-planes showed no statistically significant difference between conditions. CONCLUSION: Rollator-walking reduces lower-limb muscle activity but trunk-sway remains unchanged as stability is likely gained through forces generated by the upper-limbs. Short-term stability is gained but the long-term effect is unclear and requires investigation.
OBJECTIVE: To investigate the immediate effect of four-wheeled- walker(rollator)walking on lower-limb muscle activity and trunk-sway in healthy subjects. METHODS: In this cross-sectional design electromyographic (EMG) data was collected in six lower-limb muscle groups and trunk-sway was measured as peak-to-peak angular displacement of the centre-of-mass (level L2/3) in the sagittal and frontal-planes using the SwayStar balance system. 19 subjects walked at self-selected speed firstly without a rollator then in randomised order 1. with rollator 2. with rollator with increased weight-bearing. RESULTS: Rollator-walking caused statistically significant reductions in EMG activity in lower-limb muscle groups and effect-sizes were medium to large. Increased weight-bearing increased the effect. Trunk-sway in the sagittal and frontal-planes showed no statistically significant difference between conditions. CONCLUSION: Rollator-walking reduces lower-limb muscle activity but trunk-sway remains unchanged as stability is likely gained through forces generated by the upper-limbs. Short-term stability is gained but the long-term effect is unclear and requires investigation.
Authors: Ulrich Lindemann; Michael Schwenk; Syn Schmitt; Michael Weyrich; Wolfgang Schlicht; Clemens Becker Journal: Z Gerontol Geriatr Date: 2016-11-22 Impact factor: 1.281