Background

Hip fracture is a debilitating injury, especially in older adults. The purpose of this study was to determine the relationships between Trail-Making test performance and parameters of the choice stepping reaction time test in community-dwelling older adults after hip fracture.

Methods

Twenty-four older adults post-hip fracture repair participated in an ancillary study for physical therapy interventions. Measures included Trail-Making test (Parts A & B) scores, movement time (time from foot liftoff to touchdown), step speed, reaction time (time from cue to foot liftoff), and total response time (time from step cue to touchdown) in the forward and lateral directions. Paired t-tests and multiple linear regressions were used for analysis.

Findings

Significant differences were found in movement time, speed and reaction time between limbs in the lateral direction, and in movement and reaction time in the forward direction. Trails A predicted step speed, reaction time and total response time for the fractured limb in the lateral direction, as well as reaction time and total response time in the forward direction. However, Trails A could not predict performance for the non-fractured limb. Trails B predicted stepping performance for both limbs in the forward and lateral directions.

Interpretation

Trails A correlated with the fractured limb's ability to perform the choice stepping test, but not in the non-fractured limb. Meanwhile, Trails B correlated with stepping performance in both limbs, suggesting those with poorer executive function have a lower protective stepping capability and may be at a higher risk for future falls and injury.

中文翻译：

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神经认知测量可预测老年人髋部骨折后的自主行走表现

 背景

髋部骨折是一种使人衰弱的损伤，尤其是对于老年人来说。本研究的目的是确定髋部骨折后社区居住的老年人的步道测试表现与选择步进反应时间测试参数之间的关系。

 方法

二十四名髋部骨折修复后的老年人参加了物理治疗干预的辅助研究。衡量指标包括越野测试（A 部分和 B 部分）分数、运动时间（从脚抬起到落地的时间）、步速、反应时间（从提示到脚抬起的时间）以及总反应时间（从脚步提示到落地的时间） ）在向前和横向方向上。使用配对t检验和多元线性回归进行分析。

 发现

侧向运动时间、速度和反应时间以及向前方向运动和反应时间均存在显着差异。 Trails 预测骨折肢横向的步速、反应时间和总响应时间，以及向前方向的反应时间和总响应时间。然而，轨迹 A 无法预测非骨折肢体的表现。轨迹 B 预测了双肢向前和横向的迈步性能。

 解释

轨迹 A 与骨折肢体执行选择步进测试的能力相关，但与非骨折肢体无关。同时，轨迹 B 与双肢的迈步表现相关，表明执行功能较差的人具有较低的保护性迈步能力，未来跌倒和受伤的风险可能更高。