Kaneda Kazuki, Maeda Noriaki, Ikuta Yasunari, Tashiro Tsubasa, Tsutsumi Shogo, Arima Satoshi, Sasadai Junpei, Suzuki Yuta, Morikawa Masanori, Komiya Makoto, Adachi Nobuo, Urabe Yukio
Department of Sports Rehabilitation, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan.
Department of Orthopedic Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan.
J Hum Kinet. 2023 Jul 15;87:95-103. doi: 10.5114/jhk/163148. eCollection 2023 Jul.
This cross-sectional study aimed to investigate the relationship between foot shape and intrinsic foot muscles (IFMs) in adolescent swimmers compared with other athletes. Foot morphology of swimmers was compared with other athletes of comparable age and a competition level (n = 32 [64 feet]; a total of 64 feet; 128 feet in two groups). Foot morphology and variables of IFMs were measured using a three-dimensional foot scanner and an ultrasound imaging system, respectively. Multiple linear regression analysis with forced entry was performed to clarify the association of the thickness and the cross-sectional area (CSA) of IMFs with the navicular height in both sitting and standing positions. Navicular height in a standing position, the thickness of the abductor hallucis (AbH) and the flexor digitorum brevis (FDB), as well as the CSA were significantly lower in swimmers compared with other athletes (p < 0.05). A larger CSA for the flexor hallucis brevis (FHB) was observed in swimmers than in other athletes (p < 0.01). The navicular height of swimmers in sitting and standing positions was positively correlated with the thickness and the CSA of the FHB and the FDB (p < 0.05). Multiple regression analysis showed that navicular height was associated with the CSA of the FDB in both sitting and standing positions (β = 0.395; p < 0.002, β = 0.201; p < 0.018). This study showed that the navicular height of elite adolescent swimmers was lower than that of other athletes. Furthermore, the swimmers' high navicular height was associated with the CSA of the FDB, suggesting that the FDB might be more involved in the formation of the medial longitudinal arch than the AbH.
这项横断面研究旨在调查青少年游泳运动员与其他运动员相比，足部形状与足部固有肌肉（IFMs）之间的关系。将游泳运动员的足部形态与年龄和比赛水平相当的其他运动员（n = 32[64只脚]；共64只脚；两组共128只脚）进行比较。分别使用三维足部扫描仪和超声成像系统测量足部形态和IFMs的变量。进行强制进入的多元线性回归分析，以阐明在坐姿和站姿下IMFs的厚度和横截面积（CSA）与舟骨高度之间的关联。与其他运动员相比，游泳运动员站立位的舟骨高度、拇展肌（AbH）和趾短屈肌（FDB）的厚度以及CSA显著更低（p < 0.05）。观察到游泳运动员的拇短屈肌（FHB）的CSA比其他运动员更大（p < 0.01）。游泳运动员在坐姿和站姿下的舟骨高度与FHB和FDB的厚度及CSA呈正相关（p < 0.05）。多元回归分析表明，在坐姿和站姿下，舟骨高度均与FDB的CSA相关（β = 0.395；p < 0.002，β = 0.201；p < 0.018）。这项研究表明，优秀青少年游泳运动员的舟骨高度低于其他运动员。此外，游泳运动员较高的舟骨高度与FDB的CSA相关，这表明FDB可能比AbH更多地参与内侧纵弓的形成。
