The effect of diabetic neuropathy and previous foot ulceration in EMG and ground reaction forces during gait


Autoria(s): AKASHI, Paula M. H.; SACCO, Isabel C. N.; WATARI, Ricky; HENNIG, Ewald
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

19/10/2012

19/10/2012

2008

Resumo

Background. We aimed at investigating the influence of diabetic neuropathy and previous history of plantar ulcers on electromyography (EMG) of the thigh and calf and on vertical ground reaction forces during gait. Methods. This study involved 45 adults divided into three groups: a control group (n = 16), diabetic neuropathic group (n = 19) and diabetic neuropathic group with previous history of plantar ulceration (it = 10). EMG of the right vastus lateralis, lateral gastrocnemius and tibialis anterior were studied during the stance phase. The peaks and time of peak occurrence were determined and a co-activation index between tibialis anterior and lateral gastrocnemius. In order to represent the effect of the changes in EMG, the first and second peaks and the minimum value of the vertical ground reaction force were also determined. Inter-group comparisons of the electromyographical and ground reaction forces variables were made using three MANCOVA (peaks and times of EMG and peaks of force) and one ANCOVA (co-activation index). Findings. The ulcerated group presented a delayed in the time of the lateral gastrocnemius and vastus lateralis peak occurrence in comparison to control`s. The lateral gastrocnemius delay may be related to the lower second vertical peak in diabetic subjects. However, the delay of the vastus lateralis did not cause any significant change on the first vertical peak. Interpretations. The vastus lateralis and lateral gastrocnemius delay demonstrate that ulcerated diabetic neuropathic patients have a motor deficit that could compromise their ability to walk, which was partially confirmed by changes on ground reaction forces during the push-off phase. (c) 2007 Elsevier Ltd. All rights reserved.

Identificador

CLINICAL BIOMECHANICS, v.23, n.5, p.584-592, 2008

0268-0033

http://producao.usp.br/handle/BDPI/22053

10.1016/j.clinbiomech.2007.11.015

http://dx.doi.org/10.1016/j.clinbiomech.2007.11.015

Idioma(s)

eng

Publicador

ELSEVIER SCI LTD

Relação

Clinical Biomechanics

Direitos

restrictedAccess

Copyright ELSEVIER SCI LTD

Palavras-Chave #biomechanics #EMG #diabetic neuropathies #gait #LIMITED JOINT MOBILITY #PERIPHERAL NEUROPATHY #PLANTAR PRESSURE #MELLITUS #WALKING #STABILITY #PEOPLE #Engineering, Biomedical #Orthopedics #Sport Sciences
Tipo

article

original article

publishedVersion