Features of acceleration and angular velocity using thigh IMUs during walking in water

Koichi Kaneda, Yuji Ohgi, Mark McKean, Brendan Burkett

Research output: Contribution to journalArticlepeer-review

Abstract

Ten participants were assessed while walking in water and on land with wearable inertial measurement units (IMUs) attached to the right thigh. Longitudinal acceleration, anterior-posterior acceleration, and frontal axis angular velocity were measured at 100 Hz, matched with video analysis sampled at 25 Hz during the walking trials. The longitudinal acceleration showed almost 1 g from initial heel contact to 70% of one cycle, and the anterior-posterior acceleration showed a sinusoidal pattern, synchronizing the approximate posture of the thigh in water. The frontal axis angular velocity fluctuated less while walking in water compared with on land, because thigh motion speed was slower in water than on land. The acceleration and angular velocity in water were stable and did not fluctuate. Walking exercises in water may be effective in individuals with knee- or thigh-related medical issues.

Original languageEnglish
Article number12
JournalInternational Journal of Aquatic Research and Education
Volume12
Issue number4
DOIs
Publication statusPublished - 2020 Apr

Keywords

  • Exercise therapy
  • Gait
  • Health promotion
  • Immersion
  • Underwater
  • Wearable inertial sensor

ASJC Scopus subject areas

  • Aquatic Science

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