Cartón-Llorente Antonio, Cardiel-Sánchez Silvia, Molina-Molina Alejandro, Ráfales-Perucha Andrés, Rubio-Peirotén Alberto
Campus Universitario, Universidad San Jorge, Autov A23 km 299, Villanueva de Gállego, 50830 Zaragoza, Spain.
Sports (Basel). 2024 Apr 27;12(5):117. doi: 10.3390/sports12050117.
The assessment of leg asymmetries is gaining scientific interest due to its potential impact on performance and injury development. Athletes around puberty exhibit increased gait variability due to a non-established running pattern. This study aims to describe the asymmetries in the spatiotemporal running parameters in developmentally aged athletes. Forty athletes under 14 (U14) (22 females and 18 males) were assessed running on a treadmill at constant speeds of 12 and 14 km·h for 3 min. Step length, step frequency, along with contact (CT) and flight time, both in absolute values and as a percentage of step time, were recorded using a RunScribe sensor attached to the laces of each shoe. U14 runners exhibited high bilateral symmetry in the spatiotemporal parameters of running, with mean asymmetry values (1-5.7%) lower than the intra-limb coefficient of variation (1.7-9.6%). Furthermore, bilateral asymmetries did not vary between the two speeds. An individual-based interpretation of asymmetries identified subjects with consistent asymmetries at both speeds, particularly in terms of CT and contact ratio (%, CT/step time). This study confirms the high symmetry of pubertal runners and paves the way for the application of portable running assessment technology to detect asymmetries on an individual basis.
由于腿部不对称对运动表现和损伤发展具有潜在影响，对其评估正引起科学界的关注。青春期前后的运动员由于跑步模式尚未确立，步态变异性增加。本研究旨在描述发育年龄运动员时空跑步参数的不对称性。对40名14岁以下（U14）的运动员（22名女性和18名男性）进行评估，让他们在跑步机上以12和14公里·小时的恒定速度跑步3分钟。使用附着在每只鞋鞋带处的RunScribe传感器记录步长、步频以及接触（CT）时间和腾空时间，包括绝对值和占步长的百分比。U14跑步者在跑步的时空参数方面表现出高度的双侧对称性，平均不对称值（1 - 5.7%）低于肢体内部变异系数（1.7 - 9.6%）。此外，两种速度下的双侧不对称性没有差异。基于个体的不对称性解释确定了在两种速度下都具有一致不对称性的受试者，特别是在CT和接触比率（%，CT/步长时间）方面。本研究证实了青春期跑步者的高度对称性，并为应用便携式跑步评估技术以个体方式检测不对称性铺平了道路。
