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A Vibrotactile Feedback Device for Seated Balance Assessment and Training
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Postural stabilization by trunk tightening force generated by passive power-assist device.

Yumeko Imamura, Takayuki Tanaka, Hiroyuki Nara

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |October 11, 2013
    PubMed
    Summary

    Smart Suit Lite, a novel elastic belt device, enhances torso stability and reduces low back strain. This wearable technology improved static balance by 32.1% in individuals with poor stability.

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    Area of Science:

    • Biomechanics
    • Rehabilitation Engineering
    • Wearable Technology

    Background:

    • Passive power-assist devices offer potential for muscle support and torso stabilization.
    • Traditional torso support methods like corsets can cause discomfort and negative effects due to constant tightness.
    • There is a need for dynamic torso support that activates only under load to mitigate low back strain.

    Purpose of the Study:

    • To evaluate the effectiveness of the Smart Suit Lite, a compact and lightweight passive power-assist device.
    • To assess the impact of the Smart Suit Lite on the static balance ability of wearers.
    • To investigate the potential of elastic belt technology for dynamic torso stabilization.

    Main Methods:

    • Development of the Smart Suit Lite, a device using elastic belt restoring force for power assistance.
    • Conducting two basic experiments to measure static balance ability.
    • Analyzing the standard deviation of the lumbar angle in wearers with varying stability levels.

    Main Results:

    • The Smart Suit Lite demonstrated a significant improvement in static balance.
    • The standard deviation of the lumbar angle decreased by an average of 32.1% in wearers with initially low stability.
    • The device's tightening force is load-dependent, activating during postures that stress the low back.

    Conclusions:

    • Smart Suit Lite effectively enhances static balance and provides dynamic torso support.
    • The load-dependent activation mechanism minimizes discomfort associated with continuous support.
    • This technology shows promise for reducing low back strain and improving stability in various populations.