内置三轴加速度计的智能鞋垫运用于足球运动训练的可行性

Validation of Shoe Pads Embedded with Tri-axial Accelerometer in Monitoring Soccer Training

投稿时间：2022-05-16

DOI：10.12064/ssr.2022051601

英文关键词:tri-axial accelerometer shoe pads energy expenditure

基金项目:上海市体育科技重点备战攻关项目(17J009)

作者	单位
王贝	上海体育科学研究所(上海市反兴奋剂中心),上海 200030
赵德峰	上海体育科学研究所(上海市反兴奋剂中心),上海 200030
赵海燕	上海体育科学研究所(上海市反兴奋剂中心),上海 200030
侯彬	上海体育科学研究所(上海市反兴奋剂中心),上海 200030
陈贞祥	上海体育科学研究所(上海市反兴奋剂中心),上海 200030
叶晶龙	上海体育科学研究所(上海市反兴奋剂中心),上海 200030
王晨	上海体育科学研究所(上海市反兴奋剂中心),上海 200030
任雪	上海体育科学研究所(上海市反兴奋剂中心),上海 200030

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中文摘要:

目的：通过检测智能鞋垫感知身体运动多个指标变化的准确性和有效性来探索其在足球运动训练中进行监测应用的可能性。方法：室内运动测试中，20名女足运动员依次在椭圆机上运动(Climbing)或在跑步机上快走(Walking)，或以4种不同速度跑步(Running1-4)10 min。受试者全程携带便携式心肺功能测试仪(IC)，右髋处(GWaist)和左右脚踝处(GAnkleL，GAnkleR)佩戴GT3X+，左臂佩戴Sencewear Armband(SWA)，左右鞋内放置智能鞋垫(PadL，PadR)分别测量热量消耗(CAL)、三维加速度(VA)、步数和速度。另有11名运动员参加室外球场训练测试，使用GT3X+(GWaist)、SWA、PadR和PadL分别测量VA、步数、距离和CAL。结果：室内测试结果显示所有受试者GT3X、PadR和PadL所测VA计算所得的向量的模(VM)间均显著高度相关(r=0.729~0.997)。Climbing和Running2-4阶段，PadR+L、GWaist和GAnkleR+L间步数高度相关并无显著差异性。Running1阶段，当GAnkleR+L所测步数≤30步/10秒时，三者间无显著性差异；当＞30步/10秒时，PadR+L和GWaist均与GAnkleR+L差异＞10%。当比较PadR+L与SWA时，除了在Walking阶段，步数差异＞10%，其他阶段均无显著差异。PadR+L所测CAL与IC或SWA高度相关但显著高估了Walking阶段和低估了其他阶段(P＜0.001)；在Running1阶段，PadR+L和IC或SWA间的差异小于10%。在室外场地训练测试中，GWaist和PadR以及PadL所得VM间显著相关，但PadR和PadL显著高于GWaist。GWaist、SWA和PadR+L所测步数间显著相关，但PadR+L所测每10 s步数显著高于GWaist，所测总步数显著高于SWA。PadR+L测得的运动总距离和CAL与SWA无显著性差异。结论：此款智能鞋垫便于足球运动员穿戴并进行长时间监测，提供的多种运动指标数据在一些特定运动状态中比较有效，尤其适用于监测室外场地运动。

英文摘要:

The aim was to validate a new type of shoe pads embedded with tri-axial accelerometer in estimating acceleration, steps and energy expenditure during stair climbing, walking, jogging and running, and its application in monitoring soccer training. Methods: A total of 20 female soccer players performed 10-min exercise on an elliptical trainer (Climbing) and walking (Walking) or running at four different speeds on treadmill (Running 1-4). Throughout the test, the players carried the portable indirect calorimetry (IC), wore GT3X+ on the right waist (GWAIST) and the both ankles (Ganklel, Gankler), and wore Sencewear Armband (SWA) on the left arm, meanwhile placed the shoe pads (PadR，PadL) inside running shoes to measure CAL, VA, steps and speeds respectively. Another 11 players participated in the field training test, using GT3X+(GWAIST), SWA, PadR, and PadL to measure VA, steps, distance and CAL, respectively. Results: The indoor testing data showed that the intra-individual correlations between vector magnitude (VM) calculated from VA measured by GT3X+，PadR and PadL were significantly high for all subjects (r=0.729-0.997, mean=0.975±0.004). The step counts obtained by PadR+L, GWaist, and GAnkleR+L were highly correlated without significant differences during Climbing and Running2-4. During Running1, there were no significant differences among the three when steps assessed by GAnkleR+L were 30 steps/10s, while the differences between GAnkleR+L and PadR+L or GWaist were ＞10% when steps were ＞30 steps/10s. Steps between PadR+L and SWA were not significantly different in all trials except during Walking, where the difference was ＞10%. CAL assessed by PadR+L was highly correlated with CAL from IC or SWA, but PadR+L overestimated CAL during Walking and underestimated CAL during all other trials (P＜0.001). During Running1, the differences between SWA and PadR+L or IC were ＜10%. During field training test, GWaist，PadR and PadL were significantly correlated in VM, but PadR and PadL was significantly higher than GWaist. Steps assessed by GWaist, SWA and PadR+L were significantly correlated, with PadR+L higher than GWaist in per 10 sec, and higher than SWA in total steps. Total distance and CAL measured by PadR+L were not significantly different from SWA. Conclusion: The shoe pads embedded with tri-axial accelerometer is easy to wear and appropriate for long time monitoring in soccer plays. It appears to measure physical activity at moderate intensities accurately, especially applicable for training monitoring in outdoor field.

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