Time constraints often result in the challenge to fit desired programming into training time allotments. Wearable resistance (WR) may be an option to optimise the training content in function of constrained training time. The purpose of this study was to determine the effects of a lower-limb WR sprint running training intervention on athlete speed capabilities following a nine-week off-season, low volume training period within a sample of American football high school athletes. Nineteen athletes completed pre- and post-intervention testing of two maximal effort 30 m sprints. Horizontal force-velocity mechanical profiling variables, sprint times, and maximal velocity were calculated from sprint running velocity data collected by a radar device. The athletes completed seventeen dedicated sprint training sessions during the off-season. The intervention (WR) group completed the sessions with 1% body mass load attached to the shanks (i.e. 0.50% body mass load on each limb). The control group completed the same training sessions unloaded. Post-intervention, no statistically significant between group differences were observed (p > 0.05). However, athletes in both groups experienced increases in velocity measures following the sprint training. The greater adjusted mean theoretical maximal velocity scores (p > 0.05; ES = 0.30) found for the WR group compared to the control group at post-intervention may suggest that WR amplifies the nuances of the training protocol itself. Coaches can consider using lower-limb WR training to increase in-session workloads during periods of low volume training but more research is needed to better understand to what extent WR training might provide an added value to optimise both the training content and planning, as well as the athlete’s training response in order to improve sprint running performance.

时间限制通常导致挑战，以使所需的程序适合训练时间分配。穿戴式阻力（WR）可能是在受限训练时间的基础上优化训练内容的一种选择。这项研究的目的是确定在美式橄榄球高中运动员样本中进行为期九周的淡季小量训练之后，下肢WR冲刺跑步训练干预对运动员速度能力的影响。19名运动员完成了两个最大的30 m冲刺的干预前和干预后的测试。从雷达设备收集的冲刺运行速度数据中计算出水平力-速度机械轮廓变量，冲刺时间和最大速度。淡季期间，运动员完成了17场专门​​的冲刺训练。干预组（WR）组在小腿上附着1％的体重（即每条肢体的0.50％的体重）来完成训练。对照组完成了相同的培训课程。干预后，未观察到组间差异有统计学意义（p  > 0.05）。但是，在短跑训练后，两组运动员的速度指标都有所提高。 干预后，与对照组相比，WR组发现更大的调整后的理论最大速度得分（p > 0.05； ES = 0.30）可能表明WR放大了训练方案本身的细微差别。教练可以考虑在低强度训练期间使用下肢WR训练来增加会话中的工作量，但还需要更多的研究来更好地了解WR训练在多大程度上可以提供附加价值来优化训练内容和计划作为运动员的训练反应，以提高短跑的跑步表现。