High plantar pressure has been associated with increased risk of injury. The characteristics of each physical activity determine the load on the lower limbs. The influence of Nordic Walking (NW) technique on plantar pressure is still unknown. The aim of this study was to analyze the differences between plantar pressure during NW with the Diagonal technique (DT) versus Alpha technique (AT) and compare them with the pressure obtained during normal walking (W). The normality and sphericity of the plantar pressure data were checked before performing a two-way repeated measures ANOVA in order to find differences between speeds (preferred, fast) and the gait (NW, W) as within-subject factors. Then, a t-test for independent measures was used to identify the specific differences between NW techniques. The strength of the differences was calculated by means of the effect size (ES). The results demonstrated that during NW with AT at preferred speed the pressure was lower under the Calcaneus, Lateral Metatarsal and Toes compared to the DT group (p = 0.046, ES = 1.49; p = 0.015, ES = 1.44; p = 0.040, ES = 1.20, respectively). No differences were found at the fast speed (p > 0.05). Besides the increase in walking speed during NW (p < 0.01), both technique groups showed lower pressure during NW compared to W under the Hallux and Central Metatarsal heads (F = 58.321, p = 0.000, ES = 2.449; F = 41.917, p = 0.012, ES = 1.365, respectively). As a practical conclusion, the AT technique may be the most effective of the NW techniques at reducing plantar pressure while allowing NW practitioners to achieve the physiological benefits of NW.
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机译:足底高压与受伤风险增加有关。每个体育活动的特征决定了下肢的负荷。北欧行走(NW)技术对足底压力的影响仍然未知。这项研究的目的是分析对角线技术(DT)与Alpha技术(AT)在NW期间的足底压力之间的差异,并将其与正常步行(W)期间获得的压力进行比较。在进行两次重复测量方差分析之前,检查足底压力数据的正态性和球形性,以找出速度(首选,快速)和步态(NW,W)之间的差异作为受试者内因素。然后,采用独立测量的t检验来确定NW技术之间的特定差异。通过效果大小(ES)计算差异的强度。结果表明,与DT组相比,在AT以优选速度进行NW时,跟骨,Later骨和脚趾下的压力低于DT组(p = 0.046,ES = 1.49; p = 0.015,ES = 1.44; p = 0.040,ES分别为1.20)。快速速度无差异(p> 0.05)。除了在NW期间步行速度增加(p <0.01)之外,两个技术组均显示在NW期间比Hallux和Central骨中央头下方的W压力低(F = 58.321,p = 0.000,ES = 2.449; F = 41.917,p = 0.012,ES = 1.365)。作为实际结论,AT技术可能是NW技术中降低足底压力最有效的方法,同时允许NW执业者获得NW的生理益处。
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