跑步时平均垂直负荷率（AVLR）增加的后足打击（RFS）模式与受伤有关。这项研究评估了器械袜的能力，提供实时脚踏和节奏音频生物反馈，将以前受伤的军人从RFS过渡到非后脚打击（NRFS）跑步模式。19名RFS跑步者（10名男性，9名女性）被指示穿上器械袜，以促进脚踏运动的改变，同时完成独立的步行进度和下肢锻炼计划。在跑步机跑步期间收集动力学数据，同时在初始（T1）使用视频分析确定脚踏。干预后（T2），和后续(T3)数据收集。几乎所有跑步者（18/19）在干预后（初次访问后8±2.4周）过渡到NRFS模式。大多数参与者（16/18）在随访时（干预后访视后5±0.8周）保持过渡。受累和未受累肢体的AVLR从最初的[54.7±13.2体重/秒（BW/s）和55.1±12.7BW/s]到干预后（38.7±10.1BW/s和38.9±10.0BW/s）下降了29％，分别。这种效果在随访5周后持续存在，表示受累肢体总体减少30%，未受累肢体减少24%。从最初到干预后的时间点，节奏增加(p=0.045)；然而，该效应在随访时没有持续(p=0.08).有了技术提供的来自仪表袜子的反馈，大约90%的参与者过渡到NRFS模式，AVLR降低，减少站立时间，并在5周后保持这些跑步适应。
A rearfoot strike (RFS) pattern with increased average vertical loading rates (AVLR) while running has been associated with injury. This study evaluated the ability of an instrumented sock, which provides real-time foot strike and cadence audio biofeedback, to transition previously injured military service members from a RFS to a non-rearfoot strike (NRFS) running pattern. Nineteen RFS runners (10 males, 9 females) were instructed to wear the instrumented socks to facilitate a change in foot strike while completing an independent walk-to-run progression and lower extremity exercise program. Kinetic data were collected during treadmill running while foot strike was determined using video analysis at initial (T1), post-intervention (T2), and follow-up (T3) data collections. Nearly all runners (18/19) transitioned to a NRFS pattern following intervention (8 ± 2.4 weeks after the initial visit). Most participants (16/18) maintained the transition at follow-up (5 ± 0.8 weeks after the post-intervention visit). AVLR of the involved and uninvolved limb decreased 29% from initial [54.7 ± 13.2 bodyweights per sec (BW/s) and 55.1 ± 12.7 BW/s] to post-intervention (38.7 ± 10.1 BW/s and 38.9 ± 10.0 BW/s), respectively. This effect persisted 5-weeks later at follow-up, representing an overall 30% reduction on the involved limb and 24% reduction on the uninvolved limb. Cadence increased from the initial to the post-intervention time-point (p = 0.045); however, this effect did not persist at follow-up (p = 0.08). With technology provided feedback from instrumented socks, approximately 90% of participants transitioned to a NRFS pattern, decreased AVLR, reduced stance time and maintained these running adaptations 5-weeks later.
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