Gál-Pottyondy Anna, Petró Bálint, Takács Mária, Négyesi János, Nagatomi Ryoichi, Kiss Rita M
Doctoral School of Sport Sciences, Hungarian University of Sports Science, Budapest, Hungary.
Faculty of Mechanical Engineering, Department of Mechatronics, Optics and Engineering Informatics, Budapest University of Technology and Economics, Budapest, Hungary.
BMC Sports Sci Med Rehabil. 2023 Apr 13;15(1):57. doi: 10.1186/s13102-023-00668-6.
The prone plank test has been often used to assess the strength and endurance of trunk muscles. We aimed to develop a new measurement protocol to objectively monitor the changes in spinal curves and muscle activity simultaneously.
Eleven adolescent male basketball athletes (13-17 years) performed a one-minute plank test. Spinal curvatures (thoracic kyphosis (TK) and lumbar lordosis (LL)) were determined at each time point by optical tracking of markers placed on the spinous processes of 10 vertebrae. Eleven muscles were measured by surface electromyography to determine muscle fatigue via changes in median frequency.
TK significantly increased (p = 0.003) from the first to the last 10 s of the plank test; changes in LL were mixed within the group. Only the rectus abdominis showed consistent and significant fatigue (p < 0.001). The increased spinal curves significantly correlated with the fatigue of biceps femoris (TK: r = -0.75, p = 0.012; LL: r = -0.71, p = 0.019) indicating a compensatory muscle activation and spinal curve changes in response to fatigue.
Our protocol may support future researches that aim to objectively evaluate the prone plank test and which posture-related muscles need strengthening for the individual.
平板支撑测试常被用于评估躯干肌肉的力量和耐力。我们旨在开发一种新的测量方案，以同时客观监测脊柱曲线和肌肉活动的变化。
11名青少年男性篮球运动员（13 - 17岁）进行了一分钟的平板支撑测试。通过对放置在10个椎骨棘突上的标记进行光学跟踪，在每个时间点确定脊柱曲度（胸椎后凸（TK）和腰椎前凸（LL））。通过表面肌电图测量11块肌肉，以通过中位频率的变化确定肌肉疲劳。
在平板支撑测试的最初10秒到最后10秒期间，TK显著增加（p = 0.003）；该组内LL的变化情况不一。只有腹直肌表现出持续且显著的疲劳（p < 0.001）。脊柱曲度增加与股二头肌疲劳显著相关（TK：r = -0.75，p = 0.012；LL：r = -0.71，p = 0.019），表明存在代偿性肌肉激活以及因疲劳导致的脊柱曲度变化。
我们的方案可能支持未来旨在客观评估平板支撑测试以及确定个体需要加强哪些与姿势相关肌肉的研究。
