Faculty of Health and Sports Science (FCSD), Department of Physiatry and Nursing, University of Zaragoza, 50009 Zaragoza, Spain.
GENUD (Growth, Exercise, Nutrition and Development) Research Group, Department of Physiatry and Nursing, University of Zaragoza, 50009 Zaragoza, Spain.
Int J Environ Res Public Health. 2022 Jan 25;19(3):1317. doi: 10.3390/ijerph19031317.
The introduction of carbon fiber plate shoes has triggered a plethora of world records in running, which has encouraged shoe industries to produce novel shoe designs to enhance running performance, including shoes containing conductor elements or "grounding shoes" (GS), which could potentially reduce the energy cost of running. The aim of this study was to examine the physiological and perceptual responses of athletes subjected to grounding shoes during running. Ten elite runners were recruited. Firstly, the athletes performed an incremental running test for VOmax and anaerobic threshold (AT) determination, and were familiarized with the two shoe conditions (traditional training shoe (TTS) and GS, the latter containing a conductor element under the insole). One week apart, athletes performed running economy tests (20 min run at 80% of the AT) on a 400 m dirt track, with shoe conditions randomized. VO, heart rate, lactate, and perceived fatigue were registered throughout the experiment. No differences in any of the physiological or perceptual variables were identified between shoe conditions, with an equal running economy in both TTS and GS (51.1 ± 4.2 vs. 50.9 ± 5.1 mL kg min, respectively). Our results suggest that a grounding stimulus does not improve the energy cost of running, or the physiological/perceptual responses of elite athletes.
碳纤维板鞋的引入引发了大量的跑步世界纪录，这鼓励鞋类行业生产出新颖的鞋类设计来提高跑步性能，包括含有导体元素或“接地鞋”（GS）的鞋子，这可能会降低跑步的能量成本。本研究旨在研究运动员在跑步时穿着接地鞋的生理和感知反应。招募了 10 名精英跑步者。首先，运动员进行了增量跑步测试以确定 VOmax 和无氧阈值（AT），并熟悉了两种鞋类条件（传统训练鞋（TTS）和 GS，后者在内底下含有一个导体元素）。一周后，运动员在 400 米土跑道上以 AT 的 80%进行了 20 分钟的跑步经济测试，鞋类条件随机化。在整个实验过程中记录了 VO、心率、乳酸和感知疲劳。在生理或感知变量方面，两种鞋类条件之间没有差异，TTS 和 GS 的跑步经济性相等（分别为 51.1±4.2 和 50.9±5.1 mL kg min）。我们的结果表明，接地刺激不会降低跑步的能量成本，也不会改变精英运动员的生理/感知反应。
