Palazzo Francesco, Nardi Alessandra, Tancredi Virginia, Caronti Alfio, Scalia Tomba Gianpaolo, Lebone Pietro, Padua Elvira, Annino Giuseppe
Department of Systems Medicine, School of Human Movement Sciences, Tor Vergata University, Rome, Italy -
Department of Human Sciences and Promotion of the Quality of Life, San Raffaele Online University, Rome, Italy -
J Sports Med Phys Fitness. 2019 Feb;59(2):246-252. doi: 10.23736/S0022-4707.17.08029-X. Epub 2017 Dec 15.
The purpose of this study was to assess the effects of textured insoles on static upright posture before and after lower limb muscle fatigue. Textured insoles used contained small and non-deformable pebbles of various sizes that are able to stimulate a major number of mechanoreceptors. It was inserted inside footwear.
Ten healthy young adults participated in the study (mean age 26.1±3.07 years). They were asked to stand on a force platform in four sensory states: vision, no vision, with and without natural plantar stimulation. For each sensory state the subjects underwent a single 30-second trial in pre-fatigue and post-fatigue conditions. Muscle fatigue was induced by 60 seconds of continuous jumping. Center of pressure displacement, sway velocity, antero-posterior and medio-lateral sway velocity were measured using force platform.
Textured insoles had a stabilizing effect on balance compared to control insoles. Textured insoles significantly reduced CoPDISP and VA/P levels in closed eyes pre-fatigue condition. Post-fatigue all postural parameters improved in both vision and no vision conditions.
Textured insoles with rigid stimulation significantly improved CoPDISP, independently of vision, supplying relevant and complete sensory information and improving balance in fatigue conditions.
本研究的目的是评估有纹理鞋垫对下肢肌肉疲劳前后静态直立姿势的影响。所使用的有纹理鞋垫包含各种大小的小且不可变形的卵石，能够刺激大量的机械感受器。它被插入鞋内。
10名健康的年轻成年人参与了该研究（平均年龄26.1±3.07岁）。他们被要求在四种感觉状态下站在测力平台上：视觉、无视觉、有和无自然足底刺激。对于每种感觉状态，受试者在疲劳前和疲劳后条件下进行一次30秒的试验。通过60秒的连续跳跃诱导肌肉疲劳。使用测力平台测量压力中心位移、摆动速度、前后和内外侧摆动速度。
与对照鞋垫相比，有纹理鞋垫对平衡有稳定作用。有纹理鞋垫在闭眼疲劳前条件下显著降低了压力中心位移和垂直/前后位移水平。疲劳后，在视觉和无视觉条件下所有姿势参数均有所改善。
具有刚性刺激的有纹理鞋垫显著改善了压力中心位移，与视觉无关，提供了相关且完整的感觉信息，并改善了疲劳状态下的平衡。
