Abstract
The aim of this study was to investigate the plantar blood flow response to the same accumulated pressure stimulus in diabetic patients with different peak plantar pressure (PPP), which is important for assessing the risk of diabetic foot ulcer. Eleven diabetic subjects with high PPP (PPP ≥ 207 kPa) and 8 diabetic subjects with low PPP (PPP < 207 kPa) were asked to walk naturally on a treadmill so as to induce an accumulated stimulus of 73,000 kPa·s on their first metatarsal head, which was monitored with a sensorized insole. Blood perfusion (BP) in the first metatarsal head was measured before and after walking. Results showed that blood flow after applying the same walking stimulus was significantly decreased in comparison to the basal BP before walking in both high PPP and low PPP groups (p < 0.05), but no significant differences were found between the two groups in terms of BP parameters and its percentage change (p > 0.05). Moreover, BP parameters were not significantly correlated to PPP and the pressure-time integral (PTI) of the subjects’ gait (p > 0.05). This indicated that, besides PPP and PTI, the accumulated mechanical stimulus should be taken into consideration when assessing the risk of diabetic patients developing foot ulcers.
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This work was supported by the National Natural Science Foundation of China [grant number 11672027] and Beijing Municipal Science & Technology Commission [grant number Z171100000517010].
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All procedures performed in studies involving human participants were in accordance with the ethical standards of Beihang University and with the Declaration of Helsinki. Informed consent was obtained from all individual participants included in the study.
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Pu, F., Ren, W., Fu, H. et al. Plantar blood flow response to accumulated pressure stimulus in diabetic people with different peak plantar pressure: a non-randomized clinical trial. Med Biol Eng Comput 56, 1127–1134 (2018). https://doi.org/10.1007/s11517-018-1836-x
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DOI: https://doi.org/10.1007/s11517-018-1836-x