Investigation of lumbar lordosis angle and sacral slope angle during standing and trunk extension in ballet dancers

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  • Umino E
    Department of Rehabilitation, Showa University Fujigaoka Rehabilitation Hospital
  • Aso T
    Department of Rehabilitation, Showa University Fujigaoka Rehabilitation Hospital
  • Tamura M
    Department of Rehabilitation, Showa University Fujigaoka Rehabilitation Hospital Research Instiute for Sport and Exercse Sciences, Showa Univesity
  • Noguchi Y
    Department of Rehabilitation, Showa University Fujigaoka Rehabilitation Hospital Department of Physical Therapy, Showa University School of Nursing and Rehabilitation Sciences
  • Matsunaga Y
    Research Instiute for Sport and Exercse Sciences, Showa Univesity Department of Physical Therapy, Showa University School of Nursing and Rehabilitation Sciences Department of Rehabilitation, Showa University Koto Toyosu Hospital
  • Ikeda T
    Department of Rehabilitation, Showa University Fujigaoka Rehabilitation Hospital Research Instiute for Sport and Exercse Sciences, Showa Univesity Department of Physical Therapy, Showa University School of Nursing and Rehabilitation Sciences
  • Sanbe T
    Research Instiute for Sport and Exercse Sciences, Showa Univesity
  • Nishinaka N
    Research Instiute for Sport and Exercse Sciences, Showa Univesity Showa University Graduate School of Health Sciences Department of Orthopedic Surgery, Showa University Fujigaoka Hospital

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Other Title
  • バレエダンサーの立位および体幹後屈時における腰椎前弯角，仙骨傾斜角の検討
  • バレエダンサー ノ リツイ オヨビ タイカン コウクツジ ニ オケル ヨウツイ ゼンワンカク,センコツ ケイシャカク ノ ケントウ

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Abstract

<p>This study aimed to investigate the characteristics of lumbar lordosis angle and sacral slope angle during trunk extension in ballet dancers. The participants were 13 healthy female ballet dancers (ballet group) and 15 women with no ballet experience (non-ballet group). Lumbar lordosis and sacral slope angle in standing and maximum trunk extension were measured using lateral X-ray images of the lumbar spine. The amount of change in lumbar lordosis and sacral slope angle between standing and maximum trunk extension were calculated and compared between the two groups.</p><p>The lumbar lordosis angle in static standing of the ballet group was lower than that of the non-ballet group. The ballet group showed a higher amount of change in lumbar lordosis angle and a lower amount of change in sacral slope angle than those of the non-ballet group. The extent of lumbar lordosis is suggested to increase from the standing to the maximum trunk extension position, which is a characteristic of the spinal motion of ballet dancers.</p>

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