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Investigation of Structural Changes in Rectus Abdominis Muscle According to Curl-Up Angle Using Ultrasound with an Extended Field of View

Author

Listed:
  • Chansol Park

    (Department of Health Science, Gachon University Graduate School, Incheon 21936, Korea)

  • Hwi-Young Cho

    (Department of Health Science, Gachon University Graduate School, Incheon 21936, Korea
    Department of Physical Therapy, College of Health Science, Gachon University, Incheon 21936, Korea)

  • Chang-Ki Kang

    (Department of Health Science, Gachon University Graduate School, Incheon 21936, Korea
    Neuroscience Research Institute, Gachon University, Incheon 21565, Korea
    Department of Radiological Science, College of Health Science, Gachon University, Incheon 21936, Korea)

Abstract

The rectus abdominis (RA) muscle is related to abdominal muscle contraction and is divided into three sub-sections. In this study, changes in each section according to the curl-up angles were measured using ultrasound with an extended field of view (EFOV) scan and compared with the conventional scan. The results showed that the locations of the measurement position center were consistently detected only with the EFOV scan and that the change ratios in thickness and length between sections at the same angles were not significantly different, suggesting that each section was selectively activated. Furthermore, the ratios of the thickness and length changes in each section were significantly different between the rest position and curl-up angles. Specifically, in the section 2 there was a significant difference in the thickness and length changes between different angles, reflecting the characteristics of RA during contraction, and their variations were less than in the section 3. Therefore, the results suggest that changes in only a section of RA cannot be representative of overall RA activation, EFOV scan method can be useful for investigating the structural characteristics of RA in detail, and the proposed method can obtain various information about muscle contraction for efficient muscle treatment and muscle strengthening.

Suggested Citation

  • Chansol Park & Hwi-Young Cho & Chang-Ki Kang, 2022. "Investigation of Structural Changes in Rectus Abdominis Muscle According to Curl-Up Angle Using Ultrasound with an Extended Field of View," IJERPH, MDPI, vol. 19(21), pages 1-13, November.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:21:p:14525-:d:964222
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    References listed on IDEAS

    as
    1. José M. Oliva-Lozano & José M. Muyor, 2020. "Core Muscle Activity during Physical Fitness Exercises: A Systematic Review," IJERPH, MDPI, vol. 17(12), pages 1-42, June.
    2. Ju-Hyung Park & Seung-Jea Lee & Ho-Jin Shin & Hwi-Young Cho, 2022. "Influence of Loads and Loading Position on the Muscle Activity of the Trunk and Lower Extremity during Squat Exercise," IJERPH, MDPI, vol. 19(20), pages 1-10, October.
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