Using Digital Voice Recorder for Measurement Support time in Running:

DOI

Bibliographic Information

Other Title
  • ボイスレコーダを用いたランニングの支持時間の測定：
  • Frequency Analysis of a Footstep for Detection of a Ground Contact and Leave
  • 足音の周波数解析による接地・離地の検出

Abstract

This study investigated the consistency and validity of a new measurement method to determine the support time in the contact phase during running using a digital voice recorder (sampling frequency 44,100Hz). Fifteen male trained runners participated in this study, and they performed 50% effort running in a facility. We analyzed the force plate system and 2 kinds of measurement methods (Exp.1 and Exp.2 were applicated a piezoelectric element and a microphone, respectively) for measuring support time during running. We compared the results between the force plate system and 2 measurement methods using Bland-Altman analysis and Intraclass correlation coefficient (ICC). In the Exp.1, Fz pi and Vpi support time were 147.37 ± 12.28 ms and 139.41 ± 18.75 ms, respectively. The ICCpi (2,1) was 0.725 (ranging from 0.583 to 0.819). In the Exp.2, Fz mic and Vmic support time were 161.00 ± 11.36 ms and 167.99 ± 12.51 ms, respectively. The ICCmic (2,1) was 0.836 (ranging from -0.035 to 0.964). These results indicated that observed values of Exp.2 were more correctly than those of Exp.1, suggesting that the footstep measurement method could be available to determine support time during running.

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Keywords

Details 詳細情報について

  • CRID
    1390016902828128768
  • DOI
    10.34518/rjsp.15.0_377
  • ISSN
    21871787
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Disallowed

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