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Quantifying Hand Motion Complexity in Simulated Sailing Using Inertial Sensors.

Gurdeep Sarai1, Prem Prakash Jayaraman2, Nilmini Wickramasinghe3

  • 1School of Health Sciences, Swinburne University of Technology, Hawthorn, VIC 3122, Australia.

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|October 26, 2024
PubMed
Summary
This summary is machine-generated.

This study quantifies sailing hand movements using Approximate Entropy (ApEn) with Inertial Measurement Units (IMUs). The mainsail hand shows more complex, unpredictable acceleration than the tiller hand, revealing distinct motor control demands.

Keywords:
approximate entropy (ApEn)handednessinertial measurement units (IMUs)motion time-series analysissailing simulation

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Area of Science:

  • Biomechanics
  • Motor Control
  • Sports Science

Background:

  • Precise hand control is crucial for sailing performance.
  • Approximate Entropy (ApEn) quantifies movement regularity and unpredictability.
  • Optimal parameter selection for ApEn in sailing hand acceleration is not well-defined.

Purpose of the Study:

  • To determine appropriate parameter values ('m' and 'r') for ApEn analysis of sailing hand acceleration.
  • To investigate differences in hand acceleration complexity between mainsail and tiller hands during sailing.

Main Methods:

  • Inertial Measurement Units (IMUs) recorded acceleration data from mainsail and tiller hands (X, Y, Z axes, vector magnitude).
  • Approximate Entropy (ApEn) was calculated for 24 parameter combinations (m=2-5, r=0.10-0.50).
  • Analysis of variance (ANOVA) assessed the impact of parameters 'm' and 'r' on acceleration complexity.

Main Results:

  • Significant differences in acceleration ApEn were found between mainsail and tiller hands, especially on the Z-axis.
  • The mainsail hand exhibited higher ApEn values, indicating greater acceleration complexity and unpredictability.
  • The tiller hand demonstrated more stable and predictable acceleration patterns with lower ApEn values.
  • Parameter 'm' significantly influenced acceleration complexity for both hands, reflecting differing motor control demands.

Conclusions:

  • IMU sensors and ApEn effectively detect variations in sailing hand acceleration dynamics.
  • Distinct hand-specific acceleration patterns in sailing are identified.
  • Findings provide a basis for developing adaptive sailing techniques and motor control strategies.