Ribeiro Ana Paula, Trombini-Souza Francis, Tessutti Vitor D, Lima Fernanda R, João Sílvia M A, Sacco Isabel C N
University of Sao Paulo, Physical Therapy, Speech and Occupational Therapy Department, School of Medicine, Brazil.
Clin Biomech (Bristol). 2011 Feb;26(2):194-9. doi: 10.1016/j.clinbiomech.2010.08.004. Epub 2010 Sep 16.
Plantar fasciitis is the third most frequent injury in runners. Despite its high prevalence, its pathogenesis remains inconclusive. The literature reports overload as the basic mechanism for its development. However, the way that these plantar loads are distributed on the foot surface of runners with plantar fasciitis and the effects of pain on this mechanical factor has not yet been investigated. Therefore, the aim of this study was to evaluate and compare the plantar pressure distributions during running in runners with symptom or history of plantar fasciitis and runners without the disease.
Forty-five recreational runners with plantar fasciitis (30 symptomatic and 15 with previous history of the disease) and 60 runners without plantar fasciitis (control group) were evaluated. Pain was assessed by a visual analogue scale. All runners were evaluated by means of the Pedar system insoles during running forty meters at a speed of 12(5%) km/h, using standard sport footwear. Two-way ANOVAS were employed to investigate the main and interaction effects between groups and plantar areas.
No interaction effects were found for any of the investigated variables: peak pressure (P = 0.61), contact area (P = 0.38), contact time (P = 0.91), and the pressure-time integral (P = 0.50).
These findings indicated that the patterns of plantar pressure distribution were not affected in recreational runners with plantar fasciitis when compared to control runners. Pain also did not interfere with the dynamic patterns of the plantar pressure distributions.
足底筋膜炎是跑步者中第三常见的损伤。尽管其发病率很高，但其发病机制仍无定论。文献报道超负荷是其发展的基本机制。然而，这些足底负荷在患有足底筋膜炎的跑步者足底表面的分布方式以及疼痛对该力学因素的影响尚未得到研究。因此，本研究的目的是评估和比较患有足底筋膜炎症状或病史的跑步者与未患该病的跑步者在跑步过程中的足底压力分布。
对45名患有足底筋膜炎的休闲跑步者（30名有症状，15名有既往病史）和60名没有足底筋膜炎的跑步者（对照组）进行评估。通过视觉模拟量表评估疼痛程度。所有跑步者均穿着标准运动鞋，以12(5%)千米/小时的速度在40米跑道上跑步时，使用Pedar系统鞋垫进行评估。采用双向方差分析来研究组间和足底区域之间的主要和交互作用。
在任何研究变量中均未发现交互作用：峰值压力（P = 0.61）、接触面积（P = 0.38）、接触时间（P = 0.91）和压力-时间积分（P = 0.50）。
这些结果表明，与对照跑步者相比，患有足底筋膜炎的休闲跑步者的足底压力分布模式没有受到影响。疼痛也没有干扰足底压力分布的动态模式。
