Effect of different inner pressures of air insoles and walking durations on plantar pressure time integral

Gilang Titah Ramadhan, Fahni Haris, Yih Kuen Jan, Ben Yi Liau, Wen Thong Chang, Chien Cheng Tai, Chi Wen Lung

Research output: Contribution to journalArticlepeer-review

Abstract

Air insoles have provided insights for reducing the risk of diabetic foot ulcers (DFU). The pressure time integral (PTI) is an effective assessment that considers the time effect in various physical activities. We investigated the interactions between three different insole inner pressures (80, 160, and 240 mmHg) and two walking durations (10 and 20 min). The big toe (T1), first metatarsal head (M1), and second metatarsal head (M2) were investigated in 13 healthy participants. One-way analysis of variance (ANOVA) showed that the effects of each insole inner pressure significantly differed (P < 0.05) with a 10 min walking duration. The PTI values resulting from 80 mmHg in M2 (38.4 ± 3.8, P = 0.002) and 160 mmHg in M1 (44.3 ± 4.3, P = 0.027) were lower than those from 240 mmHg. Additionally, the paired t test showed that the effects of each walking duration were also considerably different at 160 mmHg. The PTI at 10 min was lower than that at 20 min in M1 (44.31 ± 4.31, P = 0.015) and M2 (47.14 ± 5.27, P = 0.047). Thus, we suggest that walking with a pressure of 160 mmHg for 10 min has a lower risk of DFU.

Original languageEnglish (US)
Article number19272
JournalScientific reports
Volume14
Issue number1
DOIs
StatePublished - Dec 2024

Keywords

  • Air insole
  • Diabetic foot ulcer
  • Insole inner pressure
  • Pressure time integral
  • Walking duration

ASJC Scopus subject areas

  • General

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