Leg muscle activity during walking with assistive devices at varying levels of weight bearing

Archives of Physical Medicine and Rehabilitation
Brian C ClarkLori L Ploutz-Snyder

Abstract

To evaluate the muscle activation patterns at varying levels of weight-bearing forces during assisted walking with an axillary crutch and a recently designed device that allows weight transfer through the pelvic girdle (ED Walker). Descriptive, repeated measures. University-based research laboratory. Twelve healthy volunteers (age, 39.6+/-13.6 y). Not applicable. Electromyographic activity was recorded from the anterior tibialis, soleus, biceps femoris, and vastus lateralis muscles on a test leg during assisted axillary crutch and ED Walker ambulation. Force platform readings measured weight-bearing load (non, light, heavy). These values were normalized to normal walking gait. In the vastus lateralis and soleus muscles, both devices allowed for approximately 50% and 65% reductions in electromyographic activity during the non-weight-bearing condition. During crutch ambulation, electromyographic activity of the soleus was significantly reduced compared with that required for normal walking at all levels of weight-bearing load. In the vastus lateralis for the weight-bearing conditions, the ED Walker required significantly higher electromyographic activity than crutch ambulation (light: 105.0%+/-12.3% vs 72.7%+/-10.1%; heavy: 144.8...Continue Reading

References

Aug 1, 1996·Archives of Physical Medicine and Rehabilitation·L L Ploutz-SnyderG A Dudley
Feb 1, 1997·Journal of Orthopaedic Trauma·S Raikin, M I Froimson
Dec 2, 1998·Orthopaedic Nursing·V C Williamson
Jan 11, 2001·Muscle & Nerve·R M Enoka, A J Fuglevand
Mar 23, 2002·The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences·Lori L Ploutz-SnyderDouglas A Wolf

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Citations

Jul 8, 2015·Assistive Technology : the Official Journal of RESNA·Adam DooleyYanxin Zhang
Oct 20, 2010·Orthopedics·Guy RubinNimrod Rozen
Jun 25, 2016·Sensors·Gema Chamorro-MorianaCarmen Ridao-Fernández
Apr 20, 2013·Physical Medicine and Rehabilitation Clinics of North America·Joan E Edelstein
Apr 20, 2017·Journal of Sport Rehabilitation·Michael SandersMatthew K Seeley
Oct 24, 2020·PM & R : the Journal of Injury, Function, and Rehabilitation·Ranita H K ManochaBonita J Sawatzky
Aug 4, 2021·FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology·Craig R G WillisPhilip J Atherton

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