Prum Grégoire, Eyssartier Camille, Bourgain Maxime, Rouch Philippe, Billard Pierre, Thoreux Patricia, Sauret Christophe
Institut de Biomécanique Humaine Georges Charpak, Arts et Métiers Sciences and Technologies, 75013 Paris, France.
Unité de Médecine Physique et Rééducation, Rouen University Hospital, 76000 Rouen, France.
J Funct Morphol Kinesiol. 2024 Dec 3;9(4):253. doi: 10.3390/jfmk9040253.
BACKGROUND/OBJECTIVES: The aim of this study was to evaluate changes in trunk height and variations in spino-pelvic parameters during trunk self-elongation. Two populations were studied: non-athletes and gymnasts, who differ in their engagement with core-strengthening exercises.
EOS biplanar radiographs were taken on 14 non-athletes and 24 gymnasts in both neutral and trunk self-elongation positions. Three-dimensional reconstructions of the pelvis and spine were used to calculate effective trunk height, thoracic and lumbar contributions, and spino-pelvic parameters.
Trunk self-elongation resulted in a significant increase in trunk height for both groups (7 mm on average, range: -1 to 14 mm), accompanied by a reduction in thoracic kyphosis for all participants (-10° for non-athletes and -17° for gymnasts, on average) and a reduction in lumbar lordosis in most participants (-5° for non-athletes and -7° for gymnasts, on average). However, some individuals in both groups exhibited an increase in lumbar lordosis, which reduced the contribution of the lumbar region to overall trunk height.
Trunk self-elongation instruction effectively increases trunk height, but additional instructions, such as pelvic retroversion, may enhance its effectiveness.
背景/目的：本研究旨在评估躯干自我伸展过程中躯干高度的变化以及脊柱-骨盆参数的改变。研究了两个人群：非运动员和体操运动员，他们在进行核心强化训练的程度上有所不同。
对14名非运动员和24名体操运动员在中立位和躯干自我伸展位拍摄EOS双平面X线片。利用骨盆和脊柱的三维重建来计算有效躯干高度、胸段和腰段的贡献以及脊柱-骨盆参数。
两组在躯干自我伸展时躯干高度均显著增加（平均7毫米，范围：-1至14毫米），所有参与者的胸椎后凸均减小（非运动员平均减小10°，体操运动员平均减小17°），大多数参与者的腰椎前凸减小（非运动员平均减小5°，体操运动员平均减小7°）。然而，两组中都有一些个体腰椎前凸增加，这降低了腰段对躯干总高度的贡献。
躯干自我伸展训练能有效增加躯干高度，但诸如骨盆后倾等额外训练可能会提高其效果。
