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Effects of Neuromuscular Electrical Stimulation Synchronized with Chewing Exercises on Bite Force and Masseter Muscle Thickness in Community-Dwelling Older Adults in South Korea: A Randomized Controlled Trial

Author

Listed:
  • Ji-Su Park

    (Advanced Human Resource Development Project Group for Health Care in Aging Friendly Industry, Dongseo University, Busan 47011, Korea)

  • Young-Jin Jung

    (Advanced Human Resource Development Project Group for Health Care in Aging Friendly Industry, Dongseo University, Busan 47011, Korea
    Department of Radiological Science at Health Sciences Division, DongSeo University, Busan 47011, Korea)

  • Min-Ji Kim

    (Department of Dental Hygiene, DongSeo University, Busan 47011, Korea)

Abstract

This study is aimed at investigating the effects of synchronized neuromuscular electrical stimulation (NMES) and chewing exercises on bite force and the masseter muscle thickness in community-dwelling older adults. Material and methods: Forty older adults were enrolled in South Korea and randomly assigned to either an experimental or control group. The experimental group performed chewing exercises using the No-Sick Exerciser equipment synchronized with NMES applied to the bilateral masseter muscles, while the control group performed only chewing exercises. Both groups received interventions for 20 min/day, 5 days/week, for 6 weeks. Bite force was measured using the OCCLUZER device, and masseter muscle thickness was measured using a portable ultrasound. Results: Both groups showed a significant increase in bite force and masseter muscle thickness compared to baseline measurements ( p < 0.05). The experimental group showed a significantly higher increase in bite force and masseter muscle thickness than the control group after combined intervention ( p < 0.05). Conclusion: This study demonstrates that NMES synchronized with chewing exercises is more efficient in increasing bite force and masseter muscle thickness than chewing exercises alone in community-dwelling older adults.

Suggested Citation

  • Ji-Su Park & Young-Jin Jung & Min-Ji Kim, 2020. "Effects of Neuromuscular Electrical Stimulation Synchronized with Chewing Exercises on Bite Force and Masseter Muscle Thickness in Community-Dwelling Older Adults in South Korea: A Randomized Controll," IJERPH, MDPI, vol. 17(13), pages 1-9, July.
    • Handle: RePEc:gam:jijerp:v:17:y:2020:i:13:p:4902-:d:381542
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    References listed on IDEAS

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    1. Moon-Young Chang & Gihyoun Lee & Young-Jin Jung & Ji-Su Park, 2020. "Effect of Neuromuscular Electrical Stimulation on Masseter Muscle Thickness and Maximal Bite Force among Healthy Community-Dwelling Persons Aged 65 Years and Older: A Randomized, Double Blind, Placebo," IJERPH, MDPI, vol. 17(11), pages 1-10, May.
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