Abstract
Diabetic Peripheral Neuropathy (DPN) brings on reduced somatosensation, which can lead to changes in postural control. The objective of this study was to evaluate postural control in a standing position and in different conditions, as well as functional balance in individuals with DPN, make the correlation between the results obtained from the postural control assessment with the values from the functional balance test and compare the results obtained in the neuropathy group with those of the control group, checking for possible differences between the evaluation conditions of both groups. The study included 13 women with DPN (NG) and 17 non-diabetic women (CG). Postural control assessment was performed by kinemetry in the following conditions: eyes opened (EO), eyes closed (EC), and semi-tandem (ST). The data was processed in MATLAB and the following variables were generated: mean amplitude of oscillation (MAO) in the anterior-posterior (AP) and medial-lateral (ML) direction; and average speed of oscillation (ASO) in AP and ML direction. Functional balance was assessed by the Timed Up and Go Test. There was significant difference between the groups (p<0.005) in MAO-AP EO and EC, MAO-ML EC and ST, and ASO-ML ST. There were differences between the conditions EO and ST (p<0.005) and EC and ST (p<0.005) for the variables MAO-ML and ASO-ML with greater damage to the NG, which also had a lower functional balance (p=0.001). ML instability was positively correlated with functional imbalance. The results show a change in the postural control system in the DPN, which could lead these individuals to a higher risk for falls and functional impairment.
Highlights
Diabetes Mellitus (DM) has been the subject of research worldwide due to the high and increasing prevalence of this disease1that leads to complications such as diabetic peripheral neuropathy (DPN)
The evaluation using the Mann-Whitney test for the variables related to the analysis of postural control showed a significant difference between the groups for mean amplitude of oscillation (MAO)-AP eyes opened (EO), MAO-AP eyes closed (EC), MAO-ML EC, MAO-ML ST, and with average speed of oscillation (ASO)-ML ST with higher values for the neuropathy group (NG) in all variables (Table 2)
The ANOVA test showed interaction between group and condition (p
Summary
Diabetes Mellitus (DM) has been the subject of research worldwide due to the high and increasing prevalence of this disease1that leads to complications such as diabetic peripheral neuropathy (DPN). DPN leads to a decrease in nerve conduction velocity[2], generally progressing in a distal to proximal direction. The person with this problem has impairment of superficial and deep sensitivity of the lower limbs, resulting in a deficient balance[3] due to the relationship between the sensitivity of the feet and maintaining postural control[4]. Some authors have studied postural control, checking decreased stability both in the diabetic and neuropathic population[5,6]. Evaluations of postural control in the diabetic population, with or without neuropathy, have been held in different conditions: with eyes closed[7], single leg stance[8], and tandem stance position[5]. Literature lacks studies on postural control associated with different degrees of difficulty
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