Reliability and validity of pressure and temporal parameters recorded using a pressure-sensitive insole during running.

R.M. Mann, L. Malisoux, R. Brunner, P. Gette, A. Urhausen, A. Statham, K. Meijer, D. Theisen*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

Running biomechanics has received increasing interest in recent literature on running-related injuries, calling for new, portable methods for large-scale measurements. Our aims were to define running strike pattern based on output of a new pressure-sensitive measurement device, the Runalyser, and to test its validity regarding temporal parameters describing running gait. Furthermore, reliability of the Runalyser measurements was evaluated, as well as its ability to discriminate different running styles. Thirty-one healthy participants (30.3+/-7.4 years, 1.78+/-0.10m and 74.1+/-12.1kg) were involved in the different study parts. Eleven participants were instructed to use a rearfoot (RFS), midfoot (MFS) and forefoot (FFS) strike pattern while running on a treadmill. Strike pattern was subsequently defined using a linear regression (R2=0.89) between foot strike angle, as determined by motion analysis (1000Hz), and strike index (SI, point of contact on the foot sole, as a percentage of foot sole length), as measured by the Runalyser. MFS was defined by the 95% confidence interval of the intercept (SI=43.9-49.1%). High agreement (overall mean difference 1.2%) was found between stance time, flight time, stride time and duty factor as determined by the Runalyser and a force-measuring treadmill (n=16 participants). Measurements of the two devices were highly correlated (R>/=0.80) and not significantly different. Test-retest intra-class correlation coefficients for all parameters were >/=0.94 (n=14 participants). Significant differences (p<0.05) between FFS, RFS and habitual running were detected regarding SI, stance time and stride time (n=24 participants). The Runalyser is suitable for, and easily applicable in large-scale studies on running biomechanics.
Original languageEnglish
Pages (from-to)455-459
Number of pages5
JournalGait & Posture
Volume39
Issue number1
DOIs
Publication statusPublished - 1 Jan 2014

Keywords

  • Strike index
  • Foot strike pattern
  • Biomechanics
  • FOOT STRIKE PATTERNS
  • GROUND REACTION FORCES
  • SHOD RUNNERS
  • BAREFOOT
  • TREADMILL

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