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    People with diabetic peripheral neuropathy display a decreased stepping accuracy during walking: potential implications for risk of tripping

    Handsaker, JC, Brown, SJ, Bowling, FL, Marple-Horvat, DE, Boulton, AJ and Reeves, ND (2015) People with diabetic peripheral neuropathy display a decreased stepping accuracy during walking: potential implications for risk of tripping. Diabetic Medicine, 33 (5). pp. 644-649.

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    Abstract

    AIM: To examine the stepping accuracy of people with diabetes and diabetic peripheral neuropathy. METHODS: Fourteen patients with diabetic peripheral neuropathy (DPN), 12 patients with diabetes but no neuropathy (D) and 10 healthy non-diabetic control participants (C). Accuracy of stepping was measured whilst the participants walked along a walkway consisting of 18 stepping targets. Preliminary data on visual gaze characteristics were also captured in a subset of participants (diabetic peripheral neuropathy group: n = 4; diabetes-alone group: n = 4; and control group: n = 4) during the same task. RESULTS: Patients in the diabetic peripheral neuropathy group, and patients in the diabetes-alone group were significantly less accurate at stepping on targets than were control subjects (P < 0.05). Preliminary visual gaze analysis identified that patients diabetic peripheral neuropathy were slower to look between targets, resulting in less time being spent looking at a target before foot-target contact. CONCLUSIONS: Impaired motor control is theorized to be a major factor underlying the changes in stepping accuracy, and potentially altered visual gaze behaviour may also play a role. Reduced stepping accuracy may indicate a decreased ability to control the placement of the lower limbs, leading to patients with neuropathy potentially being less able to avoid observed obstacles during walking.

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