Russian Federation State Scientific Center-Institute of Biomedical Problems of the Russian Academy of Sciences, 123007, 76A Khoroshevskoe shosse, Moscow, Russia.
Sci Rep. 2021 Mar 18;11(1):6232. doi: 10.1038/s41598-021-85771-9.
16 participants have been subjected to Dry Immersion model (DI) for 5 days. DI reproduces the space flight factors such as lack of support, mechanical and axial unloading, physical inactivity, elimination of vertical vascular gradient. Long-term bed rest is also associated with similar factors, so the results of the study may be useful for clinical medicine. Computer plantography and measuring the stiffness of the soft tissues of the foot and superficial muscles of the shin (mm. tibialis anterior and peroneus longus) were performed twice before DI exposure, on the 2nd and 4th days of DI exposure, as well as on the 2nd day of the recovery period. DI exposure effects the parameters under study in two ways: by raising the longitudinal arch and by flattening the transverse arch, which is accompanied by a decrease in the soft tissues stiffness of the foot and superficial muscles of the shin. The work reveals the phenomenon of compensating the longitudinal arch state by changing the characteristics that reflect the transverse arch state. The results of the study for the first time demonstrate the correlation of the foot morphological characteristics with a decrease in stiffness of mm. peroneus longus and tibialis anterior.
16 名参与者接受了 5 天的干式浸浴模型（DI）实验。DI 重现了空间飞行的多种因素，如缺乏支撑、机械和轴向卸载、身体不活动、消除垂直血管梯度。长期卧床也会产生类似的因素，因此该研究的结果可能对临床医学有用。在进行 DI 暴露之前、暴露的第 2 天和第 4 天以及恢复期的第 2 天，我们进行了两次计算机足底成像和测量足部软组织和小腿浅表肌肉（胫骨前肌和腓骨长肌）的硬度（mm）。DI 暴露通过两种方式影响研究参数：通过抬高纵弓和通过使横弓变平，这伴随着足部软组织和小腿浅表肌肉硬度的降低。该研究揭示了通过改变反映横弓状态的特征来补偿纵弓状态的现象。该研究首次证明了足部形态特征与腓骨长肌和胫骨前肌硬度降低之间的相关性。
