Gait & posture最新文献_第10页

Relationships between disease severity and walking kinematics in relapsing-remitting multiple sclerosis 复发缓解型多发性硬化症患者疾病严重程度与行走运动学的关系

IF 2.4 3区医学 Q3 NEUROSCIENCES

Gait & posture

Pub Date : 2026-01-01 Epub Date: 2025-10-12 DOI: 10.1016/j.gaitpost.2025.110011

Sumire D. Sato , Sutton B. Richmond , Clayton W. Swanson , Kristin A. Johnson , Brett W. Fling , Rachael D. Seidler

Background

Declines in walking function commonly occur in people with multiple sclerosis (MS). Walking is a continuous movement and a complex motor task that requires precise timing and scaling of activation across many muscles.

Research question

Identifying kinematic gait characteristics during a 2-min walk test that are associated with disease severity in individuals with relapsing-remitting MS.

Methods

Participants (n = 45) were instrumented with inertial measurement units from APDM (APDM Inc, Portland, OR, USA) and performed the 2-min walk test twice: once at their self-selected speed and another at their fastest, safe speed.

Results

Gait speed was not associated with MS disease duration (Self-selected: p = 0.180; Fast: p = 0.167). Canonical correlation analysis showed that disease severity characteristics was strongly associated with lateral step width variability and ankle pitch at toe-off, which was also reflected in the multiple linear regression models. Both self-selected and fast-speed kinematics were associated with disease duration (Self-selected: p = 0.007; Fast: p = 0.004).

Significance

Our study highlights the importance of considering individual differences in specific gait kinematics (such as lateral step width variability and ankle pitch at toe-off) when assessing disease severity in MS. This approach may provide more personalized insights into the impact of MS on mobility and help tailor interventions to improve gait and overall function in affected individuals. Future research should continue exploring these kinematic parameters to better understand their role in MS severity and progression and develop targeted therapeutic strategies.

背景：行走功能下降常见于多发性硬化症（MS）患者。步行是一项持续的运动，也是一项复杂的运动任务，需要精确的时间和许多肌肉的激活比例。研究问题：确定与复发缓解型多发性硬化患者疾病严重程度相关的2分钟步行测试中的运动学步态特征方法：参与者（n = 45）使用APDM （APDM Inc ., Portland， OR， USA）的惯性测量装置进行2分钟步行测试两次：一次以他们自己选择的速度，另一次以他们最快的安全速度。结果：步态速度与MS病程无相关性（自我选择：p = 0.180；快速：p = 0.167）。典型相关分析显示，疾病严重程度特征与侧步宽变异性和踝关节离趾距密切相关，这也反映在多元线性回归模型中。自选运动和快速运动均与病程相关（自选运动：p = 0.007；快速运动：p = 0.004）。意义：我们的研究强调了在评估MS疾病严重程度时考虑特定步态运动学个体差异的重要性（如侧步宽度变异性和脚趾着地时的踝关节间距）。这种方法可能为MS对活动能力的影响提供更个性化的见解，并有助于定制干预措施，以改善患者的步态和整体功能。未来的研究应继续探索这些运动学参数，以更好地了解它们在MS严重程度和进展中的作用，并制定有针对性的治疗策略。

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引用次数: 0

Validity of accelerometer-based analysis of step time and step time variability during treadmill walking in people with bilateral vestibulopathy 基于加速度计分析双侧前庭病变患者在跑步机上行走时的步长和步长变异性的有效性。

IF 2.4 3区医学 Q3 NEUROSCIENCES

Gait & posture

Pub Date : 2026-01-01 Epub Date: 2025-10-17 DOI: 10.1016/j.gaitpost.2025.110016

Meichan Zhu , Paul Willems , Rik Marcellis , Rachel Senden , Lisa van Stiphout , Mustafa Karabulut , Wouter Bijnens , Nefeli Koutsoureli , Miranda Janssen , Angélica Pérez Fornos , Nils Guinand , Raymond van de Berg , Kenneth Meijer , Christopher McCrum

Background

Gait and balance impairments, including increased gait variability, are prevalent in people with bilateral vestibulopathy (BVP). Wearable accelerometers may provide a clinically feasible method to objectively assess gait variability but have not yet been explored in BVP.

Research question

Is accelerometer-based assessment of step time variability during treadmill walking valid in people with BVP?

Methods

Adults with BVP and age-sex-matched healthy controls walked at 0.6 m/s, 0.8 m/s, and 1.0 m/s on the treadmill of the Computer Assisted Rehabilitation Environment. We examined differences in step time means and coefficients of variation (CoV) between accelerometery (single lower back sensor; MOX1) and 3D motion capture and force plates (Vicon). Validity was assessed using intraclass correlation coefficients (ICC_3,1), Pearson and Spearman correlation coefficients, and Bland-Altman analyses to determine agreement, association and consistency between the methods. Validity was additionally assessed by comparing statistical significant differences and the effect sizes between the groups using each method.

Results

Mean step time showed moderate to excellent agreement between methods, while step time CoV showed poor agreement and proportional bias. Accelerometery showed consistent between-group significance and effect size values, particularly at 0.6 m/s, although effect sizes were larger in motion capture data than in accelerometer data.

Significance

An accelerometer-based assessment is valid for assessing mean step time in people with BVP. For assessing step time variability, it can distinguish between known groups (particularly at slower speeds) but does not demonstrate criterion validity. Before clinical application, test-retest reliability and sensitivity to change should be assessed in BVP.

背景：双侧前庭病变（BVP）患者普遍存在步态和平衡障碍，包括步态变异性增加。可穿戴加速度计可能提供一种临床可行的方法来客观评估步态变异性，但尚未在BVP中进行探索。研究问题：基于加速度计的跑步机行走时步长变异性评估对BVP患者有效吗？方法：BVP成人和年龄性别匹配的健康对照在计算机辅助康复环境的跑步机上以0.6 m/s、0.8 m/s和1.0 m/s的速度行走。我们检查了加速度计（单个下背部传感器；MOX1）和3D运动捕捉和测力板（Vicon）之间的步长时间平均值和变异系数（CoV）的差异。采用类内相关系数（ICC3,1）、Pearson和Spearman相关系数以及Bland-Altman分析来评估有效性，以确定方法之间的一致性、相关性和一致性。另外，通过比较各组之间的统计学显著差异和使用每种方法的效应量来评估有效性。结果：两种方法的平均步长CoV一致性中等至极好，而步长CoV一致性较差，存在比例偏差。加速度计显示了组间显著性和效应大小值的一致性，特别是在0.6 m/s时，尽管运动捕捉数据中的效应大小大于加速度计数据。意义：基于加速度计的评估对于评估BVP患者的平均步长是有效的。为了评估步长时间可变性，它可以区分已知组（特别是在较慢的速度下），但不能证明标准的有效性。临床应用前，应评估BVP的重测信度和对变化的敏感性。

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引用次数: 0

Age is just a number: Clustering gait and functional measures 年龄只是一个数字：聚类步态和功能测量。

IF 2.4 3区医学 Q3 NEUROSCIENCES

Gait & posture

Pub Date : 2026-01-01 Epub Date: 2025-08-31 DOI: 10.1016/j.gaitpost.2025.08.080

Matthew JD Taylor , Marnee J. McKay , Joshua Burns , Jennifer Baldwin , Aleksandra V. Birn-Jeffery

Objective

As we age, we walk slower, but it remains unclear whether this is consistent at an individual level. Current clinical assessment of function assumes movement deficits with older age, and clinical norms are linked to decades or specific age stratifications such as “old” or “oldest-old”. Current approaches stratifying by age may hide trends of higher and lower functioning individuals within each age bracket. Therefore, our aim was to cluster spatiotemporal data, from the 1000 Norms Project, to understand if patterns of function could be identified without using age as a factor.

Methods

The 1000 Norms Project, a cross-sectional, observational study, collected gait, functional performance, and self-reported health data (participants (n = 695) aged 18–92 years). Spatiotemporal and functional data were clustered, after rendering the parameters dimensionless.

Results

Three clusters were identified (n = 277, 208, 210). Although age significantly differed between clusters, each showed a broad range (e.g. 20–92 years). Additionally, walking speed (Froude number) did not differ between clusters, often used to separate by age. Our clusters defined 3 groups, ‘higher functioning’, ‘age average’ and ‘cautious gait’, whose spatiotemporal, functional performance, strength and quality of life measures vastly differed, independent of walking speed and including a wide range of ages.

Conclusion

Our analysis suggests that age should not be used to separate individuals into groups, and that our assumption of “age matters” may not be relevant when determining true functional movement ability. Further work is needed to understand normal senescence, true negative loss, and reversible loss within these functionally different groups.

目的：随着年龄的增长，我们走路的速度会变慢，但目前还不清楚这在个人层面上是否一致。目前的临床功能评估假设老年人有运动缺陷，临床标准与几十年或特定年龄分层有关，如“老年”或“最老”。目前按年龄分层的方法可能会隐藏每个年龄组中功能较高和较低个体的趋势。因此，我们的目标是对来自1000个规范项目的时空数据进行聚类，以了解是否可以在不使用年龄作为因素的情况下识别功能模式。方法：1000规范项目是一项横断面观察性研究，收集步态、功能表现和自我报告的健康数据（参与者（ = 695），年龄在18-92岁）。将参数进行无因次化处理后，对时空和功能数据进行聚类。结果：共鉴定出3个聚类（n = 277、208、210）。虽然年龄在集群之间存在显著差异，但每个集群的范围都很广（例如20-92岁）。此外，行走速度（弗劳德数）在集群之间没有差异，通常用于年龄划分。我们的研究集群定义了3组，“高功能”、“平均年龄”和“谨慎步态”，他们的时空、功能表现、力量和生活质量测量差异很大，独立于步行速度，包括广泛的年龄范围。结论：我们的分析表明，年龄不应该被用来将个体划分为不同的群体，我们“年龄重要”的假设在确定真正的功能性运动能力时可能不相关。需要进一步的工作来了解这些功能不同群体中的正常衰老，真正的负性损失和可逆损失。

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引用次数: 0

Assessing postural balance control in young dinghy sailors pre, during and post training sessions 评估姿势平衡控制在年轻的小艇水手前，期间和后训练课程。

IF 2.4 3区医学 Q3 NEUROSCIENCES

Gait & posture

Pub Date : 2026-01-01 Epub Date: 2025-08-30 DOI: 10.1016/j.gaitpost.2025.08.083

Attilio Carraro , Alice Montelaghi , Marta Duina , Roberto Roklicer

Objective

This study examined the acute effect of training on postural balance among young dinghy sailors. By measuring sway path and sway area of the center of pressure (CoP), the objective was to investigate whether training sessions on dinghy sailboat influence sway path and sway area measurements.

Methods

Twelve competitive sailors (Optimist and Laser Radial class) performed a set of balance tests on both stable and unstable surfaces, with open and closed eyes, measured over three days. The first day served to familiarize the participants with the protocol. On the second and third days, CoP sway path and sway areas were assessed before, during and after the training session using a Wii Balance Board (WBB).

Results

A general improvement in balance control was observed in most of the measured parameters. Statistical analysis (RM ANOVA) revealed significant reductions in sway path and sway area with closed eyes on an unstable surface comparing pre-, during- and post- measurement on the second day (p < 0.05), and for sway path with open and closed eyes on an unstable surface on the third day (p < 0.05).

Conclusion

Findings of the present study show a short-term effect of sailing sessions on balance, suggesting that a single training session can induce acute improvements in postural control among young athletes. It is possible that the observed acute improvements are associated with immediate neuromuscular adaptation following sailing activity, specifically due to the unpredictable and dynamic environment in which sailing takes place. However, the temporal duration of this effect appears to be limited. As balance is an essential skill in sailing performance, future studies should investigate long-term effects and retention of training-induced improvements in postural control.

目的：探讨训练对年轻小艇水手体位平衡的急性影响。通过测量艇侧压力中心的横摆路径和横摆面积，探讨艇侧训练对艇侧横摆路径和横摆面积测量的影响。方法：12名参赛选手（乐天派和雷达星级）分别在稳定和不稳定的表面上进行了一组平衡测试，睁眼和闭眼，为期三天。第一天是用来让参与者熟悉协议的。在第二天和第三天，使用Wii平衡板（WBB）在训练之前，期间和之后评估CoP摆动路径和摆动区域。结果：在大多数测量参数中观察到平衡控制的普遍改善。统计分析（RM ANOVA）显示，与测量前、测量中和测量后的第二天相比，闭眼时在不稳定表面上的摆动路径和摆动面积显著减少（p ）。结论：本研究的结果表明，帆船训练对平衡有短期影响，表明单次训练可以引起年轻运动员姿势控制的急性改善。观察到的急性改善可能与帆船运动后神经肌肉的即时适应有关，特别是由于帆船运动所处的不可预测和动态环境。然而，这种影响的持续时间似乎是有限的。由于平衡是帆船运动中的一项基本技能，未来的研究应该调查训练引起的姿势控制改善的长期影响和保留。

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引用次数: 0

Barycentremetry, spine disorders, posture and motion analysis 重心测量，脊柱疾病，姿势和运动分析。

IF 2.4 3区医学 Q3 NEUROSCIENCES

Gait & posture

Pub Date : 2026-01-01 Epub Date: 2025-10-17 DOI: 10.1016/j.gaitpost.2025.110014

Wafa Skalli , Tristan Langlais , Marc Khalifé , Emmanuelle Ferrero , Claudio Vergari , Ismat Ghanem , Ayman Assi

Purpose of the research

Prevention of spine disorders and their management require better understanding of related biomechanical issues. While tremendous progress has been performed for musculoskeletal modelling of the spine, subject specific modelling of the gravitational loads and their effects on the spine is still an issue.

Recently, 3D reconstruction of the skeleton from biplanar head to feet X-rays in erect position has been completed by the external body envelope. An approach named “barycentremetry” has been proposed, based on density models to estimate the mass and centre of mass of each body segment, yielding a force plate less estimation of the gravity line, together with the estimation of the gravitational loads and the associated lever arm at each vertebral level.

Principal results

Due to vertebral pose, gravitational loads effect on intervertebral disc shows wide variation. Studies exploring barycentremetry clinical relevance were analysed, particularly for adolescent idiopathic scoliosis, adult spinal deformities and osteoporosis. They progressively yield a better comprehension of the potential vicious circles linking postural disorder to increase of spine loads to increase of postural disorder.

Barycentremetry was also explored within gait and motion analysis research, allowing to estimate subject specific body segments inertial parameters for patient specific dynamic analysis. Indeed, 3D musculoskeletal modelling of posture and motion could benefit from subject specific dynamic analysis based on barycentremetry.

Major conclusions

Such approaches progressively provide a better understanding of the stability of this complex system and compensation strategies that could be useful for early detection of disorders that are responsible of a biomechanical cascade.

研究目的：脊柱疾病的预防和治疗需要更好地了解相关的生物力学问题。虽然脊柱的肌肉骨骼建模已经取得了巨大的进展，但重力载荷及其对脊柱的影响的受试者特定建模仍然是一个问题。最近，从直立位置的双平面头部到脚的x射线已经完成了骨骼的三维重建。已经提出了一种名为“重心测量”的方法，该方法基于密度模型来估计每个身体部分的质量和质心，产生重力线的力板估计，以及每个椎体水平的重力载荷和相关杠杆臂的估计。主要结果：由于椎体姿态的不同，重力载荷对椎间盘的影响有很大的差异。研究人员分析了体重中心测量的临床相关性，特别是青少年特发性脊柱侧凸、成人脊柱畸形和骨质疏松症。他们逐渐产生了一个更好的理解潜在的恶性循环连接姿势障碍增加脊柱负荷增加姿势障碍。在步态和运动分析研究中也探索了重心测量，允许估计受试者特定身体部分的惯性参数，用于患者特定的动态分析。的确，姿势和运动的三维肌肉骨骼建模可以受益于基于重心测量的受试者特定动态分析。主要结论：这些方法逐渐提供了对这个复杂系统的稳定性和补偿策略的更好理解，这可能有助于早期发现引起生物力学级联的疾病。

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引用次数: 0

Exploring the role of heel pad thickness in lower limb biomechanics and plantar pressure during running 探讨跟垫厚度对跑步时下肢生物力学和足底压力的影响。

IF 2.4 3区医学 Q3 NEUROSCIENCES

Gait & posture

Pub Date : 2026-01-01 Epub Date: 2025-09-05 DOI: 10.1016/j.gaitpost.2025.09.005

Hyun Kyung Kim , Ali Karimi Azandariani , Megan Gordon , Seyed Ali Mirjalili

Background

While the plantar fat pad is known for its role in shock absorption and plantar force distribution during weight-bearing activities, its impact on running biomechanics is not well understood.

Research question

Does plantar fat pad thickness affect lower limb biomechanics and plantar pressure distribution during running in healthy adults?

Methods

This cross-sectional observational study involved fourteen participants (18–50 years) who ran at their preferred speed on a 10-meter walkway while lower limb kinematics and ground reaction forces were recorded using a motion capture system. Plantar pressure and force on the right foot were measured using a pressure platform. Magnetic Resonance Imaging of the right foot was performed with participants in a supine position with the ankle in a neutral position to assess plantar fat pad thickness. The collected measures included fat pad thickness, peak plantar pressure, peak plantar force, and lower limb joint kinetics and kinematics during running.

Results

Correlation analysis revealed a moderate negative correlation (R²=0.446) between heel fat pad thickness and peak plantarflexion torque during the stance phase of running. Additionally, a thicker plantar fat pad was associated with increased peak plantar pressure (R²=0.422) and peak force (R²=0.031, R²=0.432) under the mid-forefoot region.

Significance

A thicker heel fat pad was found to reduce peak plantarflexion torque, while a thicker overall plantar fat pad was associated with increased peak plantar pressure and force under the mid-forefoot. These results suggest that variations in plantar fat pad thickness may influence ankle biomechanics and plantar pressure distribution, potentially affecting running mechanics.

背景：虽然足底脂肪垫在负重活动中具有减震和足底力分布的作用，但其对跑步生物力学的影响尚不清楚。研究问题：健康成人跑步时足底脂肪垫厚度是否影响下肢生物力学和足底压力分布？方法：这项横断面观察性研究涉及14名参与者（18-50岁），他们以自己喜欢的速度在10米人行道上跑步，同时使用运动捕捉系统记录下肢运动学和地面反作用力。使用压力平台测量右脚足底压力和受力。研究人员采用平卧位，踝关节处于中性位置，对右脚进行磁共振成像，以评估足底脂肪垫的厚度。收集的测量包括脂肪垫厚度、足底峰值压力、足底峰值力和跑步时下肢关节动力学和运动学。结果：相关分析显示，站立阶段脚跟脂肪垫厚度与足底屈曲力矩峰值呈中度负相关（R2=0.446）。此外，较厚的足底脂肪垫与前足中部区域峰值足底压力（R2=0.422）和峰值力（R2=0.031, R2=0.432）增加相关。意义：研究发现，较厚的足跟脂肪垫可以降低峰值足底屈曲扭矩，而较厚的整个足底脂肪垫会增加峰值足底压力和前足中部下的力。这些结果表明，足底脂肪垫厚度的变化可能会影响踝关节生物力学和足底压力分布，从而潜在地影响跑步力学。

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引用次数: 0

How many strides are needed for reliable markerless gait analysis? 可靠的无标记步态分析需要多少步？

IF 2.4 3区医学 Q3 NEUROSCIENCES

Gait & posture

Pub Date : 2026-01-01 Epub Date: 2025-10-22 DOI: 10.1016/j.gaitpost.2025.110020

Andreia Carvalho , Jos Vanrenterghem , Todd C. Pataky , Mark A. Robinson , António P. Veloso , Vera Moniz-Pereira

Background/Aim

Markerless motion capture is an emerging tool for gait analysis. In some populations, e.g., older adults, traditional gait analysis poses practical challenges, such as reduced assessment tolerance, and the number of strides collected can be limited. This study aimed to investigate the influence of the number of strides on test-retest reliability and measurement error of markerless gait biomechanics in older adults.

Methods

Twenty strides were extracted from 29 healthy older adults for each of two sessions. Lower-limb kinematics and kinetics were computed. Subsequently, non-consecutive random subsets of k = 2–19 strides were averaged within-subjects and within-sessions, including scenarios with unequal k between sessions. Integrated Intraclass Correlation Coefficients (iICC_A,k) and Standard Errors of Measurement (SEM) were calculated for trajectory data. ICC_A,k [Confidence Intervals] were computed for the range of motion and peaks. Two arbitrary thresholds for the minimally acceptable number of strides were combined: (1) the smallest k that yielded an ICC within 10 % of the maximum ICC across all k, and (2) an absolute ICC threshold of 0.75. SEM≤ 2º was deemed suitable for kinematics, and SEM%≤ 5 % for kinetics.

Results

For joint angles and moments, iICC dropped less than 10 % from the highest iICC when using ≥ 7 strides with an equal number of strides across sessions, attaining iICCs≥ 0.75. Reducing the number of strides in one session had less impact than reducing both equally. Lower Confidence intervals were generally ≥ 0.75 for discrete parameters. Kinematic SEM rarely exceeds 2º. Globally, 4 strides are needed to have a kinetics SEM%≤ 5 %.

Conclusion

A minimum of 7 strides contributing to the average observation is generally sufficient to achieve reliable markerless kinematics and kinetics in older adults. These results have particular relevance to populations who may experience limited tolerance for lengthy assessments. Allowing flexibility in stride number collected across sessions, while maintaining reliability, contributes to optimizing data collection strategies.

背景/无AimMarkerless运动捕捉是一种新兴的步态分析工具。在某些人群中，例如老年人，传统的步态分析存在实际挑战，例如评估容忍度降低，并且收集的步幅数量可能有限。本研究旨在探讨步数对老年人无标记步态生物力学重测信度和测量误差的影响。方法选取29名健康老年人，每组20步。计算下肢运动学和动力学。随后，对k = 2-19步的非连续随机子集在受试者和会话内进行平均，包括会话之间k不相等的场景。计算了弹道数据的类内相关系数（iICCA,k）和测量标准误差（SEM）。计算运动范围和峰值的ICCA，k[置信区间]。对于最小可接受步幅数的两个任意阈值进行了组合：(1)产生ICC的最小k在所有k的最大ICC的10 %内，以及(2)绝对ICC阈值为0.75。SEM≤ 2º被认为适合运动学，SEM%≤ 5 %被认为适合动力学。结果对于关节角度和力矩，当使用≥ 7步幅和相同步幅时，iICC比最高iICC下降了不到10 %，达到iICC≥ 0.75。减少一次训练中步幅的数量比同等减少两者的效果要小。对于离散参数，较低置信区间一般≥ 0.75。运动扫描电镜很少超过2º。在全球范围内，需要4步才能达到动力学SEM%≤ 5 %。结论：在老年人中，至少7步的平均观察通常足以获得可靠的无标记运动学和动力学。这些结果与那些可能对长时间评估耐受性有限的人群特别相关。允许跨会话收集步数的灵活性，同时保持可靠性，有助于优化数据收集策略。

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引用次数: 0

Gait analysis on daily data using IMUs in smart phones, watch and earbuds 使用智能手机、手表和耳塞中的imu对日常数据进行步态分析。

IF 2.4 3区医学 Q3 NEUROSCIENCES

Gait & posture

Pub Date : 2026-01-01 Epub Date: 2025-09-20 DOI: 10.1016/j.gaitpost.2025.09.003

Zhuoli Wang, Yuta Sugiura

Background:

The use of inertial measurement unit (IMU) sensors for gait analysis has become more prevalent. More options are being offered under the development of wearable smart devices and smartphones. These techniques provide a cost-effective way to collect motion data from everyday activities, addressing the limitations of controlled laboratory environments. Despite the potential of these technologies, there are still many challenges in analyzing gait data from everyday life.

Method:

Experiments involved 16 participants (7 women, 9 men; mean age: 27.69 years) who performed walking, jogging, and going up and down stairs under three smartphone-carrying conditions: pocket, backpack, and shoulder bag. Data were collected using iPhone 14, Apple Watch Series 10, and AirPods Pro, supplemented with Xsens motion capture for ground truth. IMU data from accelerometers and gyroscopes were preprocessed and standardized before applying Principal Component Analysis (PCA). A novel sliding window-based algorithm was developed for gait segmentation and grouping, featuring a Continuity-Matching Score (CMS) for evaluating both continuity and match quality.

Result:

The proposed algorithm achieved an overall segmentation accuracy of 89.25%, with the highest performance (90.38%) observed when the smartphone was carried in a pocket. Rand Index values confirmed reliable gait grouping, with minor accuracy reductions under more dynamic carrying conditions, such as backpacks. For walk-only dataset, segmentation accuracy improved to 95.67%, while for run-only dataset, the accuracy reached 96.21%.

Conclusion:

This study introduced a system for daily-life gait analysis using consumer-grade IMU-equipped devices. The algorithm is capable of handling data containing multiple gait types, achieving reliable segmentation and grouping of synchronous gaits. Future work will focus on enhancing algorithm adaptability to dynamic environments and expanding its applicability to larger and more diverse datasets.

背景：惯性测量单元（IMU）传感器用于步态分析已经变得越来越普遍。随着可穿戴智能设备和智能手机的发展，提供了更多的选择。这些技术为从日常活动中收集运动数据提供了一种经济有效的方法，解决了受控实验室环境的局限性。尽管这些技术具有潜力，但在分析日常生活中的步态数据方面仍然存在许多挑战。方法：实验涉及16名参与者（7名女性，9名男性，平均年龄：27.69岁），他们在三种携带智能手机的条件下进行散步、慢跑和上下楼梯：口袋、背包和肩包。使用iPhone 14， Apple Watch Series 10和AirPods Pro收集数据，并辅以Xsens动作捕捉来获取地面真相。在应用主成分分析（PCA）之前，对加速度计和陀螺仪的IMU数据进行了预处理和标准化。提出了一种新的基于滑动窗口的步态分割和分组算法，该算法采用连续性匹配评分（CMS）来评价连续性和匹配质量。结果：所提算法的整体分割准确率为89.25%，其中口袋携带时的分割准确率最高，达到90.38%。Rand指数值证实了可靠的步态分组，在更动态的携带条件下，如背包，准确性略有降低。对于只行走数据集，分割准确率提高到95.67%，而对于只运行数据集，分割准确率达到96.21%。结论：本研究介绍了一种使用消费级imu设备进行日常生活步态分析的系统。该算法能够处理包含多种步态类型的数据，实现同步步态的可靠分割和分组。未来的工作将侧重于增强算法对动态环境的适应性，并将其扩展到更大、更多样化的数据集上。

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引用次数: 0

Chronic neck pain is associated with altered gait performance compared to healthy controls: Cross-sectional observations 与健康对照相比，慢性颈部疼痛与步态改变有关：横断面观察

IF 2.4 3区医学 Q3 NEUROSCIENCES

Gait & posture

Pub Date : 2026-01-01 Epub Date: 2025-09-29 DOI: 10.1016/j.gaitpost.2025.109993

Wren Burton , Yan Ma , Cynthia Long , Jacob McCarey , Jeffrey M. Hausdorff , Robert Vining , Brad Manor , Matthew H. Kowalski , Peter M. Wayne

Objective

Chronic musculoskeletal pain negatively impacts gait performance, but the impact of neck pain on gait remains unclear. This study aimed to assess measures of gait (speed and variability) in individuals with chronic neck pain (CNP) compared to non-CNP controls across various walking conditions.

Methods

Sixty participants with CNP and 41 controls were recruited. Pain, disability, general health, and gait were measured. Gait outcomes included gait speed, stride time variability (STV), and a multi-component gait variability index (GVI) across four different walking conditions: quiet walk, cognitive task (i.e., serial sevens test), horizontal head turning, and vertical head turning. Linear regression models were used to obtain adjusted group means, difference of means, and 95 % confidence intervals for gait outcomes. Exploratory analyses assessed the relationship between CNP intensity and gait across conditions. All models adjusted for age and sex.

Results

The CNP group (median age: 36.5 y, 75 % female) reported more pain, disability, pain medication use, and multisite pain (p < 0.001) than controls (median age: 32 y, 61 % female). CNP participants exhibited slower gait speed (mean difference −7.0 cm/s; 95 % CI: −15.0–0.10), greater STV (mean difference 0.43 %CV; 95 % CI: 0.05–0.89), and higher GVI (mean difference 4.16; 95 % CI: 0.03–8.46). While the negative effects of pain were present across walking conditions, the magnitude varied depending on the task and outcome measure.

Conclusion

CNP was associated with reduced gait speed and increased variability of walking patterns. Slight variations under different dual-task conditions suggest potential relationships between pain, mobility, and cognitive-motor coordination.

目的：慢性肌肉骨骼疼痛对步态性能有负面影响，但颈部疼痛对步态的影响尚不清楚。本研究旨在评估慢性颈痛（CNP）患者与非CNP对照组在不同步行条件下的步态测量（速度和变异性）。方法：招募60名CNP患者和41名对照组。测量疼痛、残疾、一般健康状况和步态。步态结果包括四种不同步行条件下的步态速度、步幅时间变异性（STV）和多组分步态变异性指数（GVI）：安静行走、认知任务（即连续7测试）、水平头部转动和垂直头部转动。使用线性回归模型获得调整后的组均值、均值之差和步态结果的95% %置信区间。探索性分析评估了不同条件下CNP强度与步态之间的关系。所有模型都根据年龄和性别进行了调整。结果：CNP组（中位年龄：36.5 y， 75% %为女性）报告了更多的疼痛、残疾、止痛药使用和多部位疼痛(p 结论：CNP与步态速度降低和步行模式变变性增加有关。不同双任务条件下的细微变化提示疼痛、活动能力和认知运动协调之间的潜在关系。

{"title":"Chronic neck pain is associated with altered gait performance compared to healthy controls: Cross-sectional observations","authors":"Wren Burton , Yan Ma , Cynthia Long , Jacob McCarey , Jeffrey M. Hausdorff , Robert Vining , Brad Manor , Matthew H. Kowalski , Peter M. Wayne","doi":"10.1016/j.gaitpost.2025.109993","DOIUrl":"10.1016/j.gaitpost.2025.109993","url":null,"abstract":"<div><h3>Objective</h3><div>Chronic musculoskeletal pain negatively impacts gait performance, but the impact of neck pain on gait remains unclear. This study aimed to assess measures of gait (speed and variability) in individuals with chronic neck pain (CNP) compared to non-CNP controls across various walking conditions.</div></div><div><h3>Methods</h3><div>Sixty participants with CNP and 41 controls were recruited. Pain, disability, general health, and gait were measured. Gait outcomes included gait speed, stride time variability (STV), and a multi-component gait variability index (GVI) across four different walking conditions: quiet walk, cognitive task (i.e., serial sevens test), horizontal head turning, and vertical head turning. Linear regression models were used to obtain adjusted group means, difference of means, and 95 % confidence intervals for gait outcomes. Exploratory analyses assessed the relationship between CNP intensity and gait across conditions. All models adjusted for age and sex.</div></div><div><h3>Results</h3><div>The CNP group (median age: 36.5 y, 75 % female) reported more pain, disability, pain medication use, and multisite pain (p < 0.001) than controls (median age: 32 y, 61 % female). CNP participants exhibited slower gait speed (mean difference −7.0 cm/s; 95 % CI: −15.0–0.10), greater STV (mean difference 0.43 %CV; 95 % CI: 0.05–0.89), and higher GVI (mean difference 4.16; 95 % CI: 0.03–8.46). While the negative effects of pain were present across walking conditions, the magnitude varied depending on the task and outcome measure.</div></div><div><h3>Conclusion</h3><div>CNP was associated with reduced gait speed and increased variability of walking patterns. Slight variations under different dual-task conditions suggest potential relationships between pain, mobility, and cognitive-motor coordination.</div></div>","PeriodicalId":12496,"journal":{"name":"Gait & posture","volume":"123 ","pages":"Article 109993"},"PeriodicalIF":2.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145214904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

3D gait analysis in patients treated for high-grade tibial plateau fractures (Schatzker VI) with closed reduction and external fixation with circular frames 高度胫骨平台骨折（Schatzker VI）闭合复位和圆形框架外固定治疗患者的三维步态分析。

IF 2.4 3区医学 Q3 NEUROSCIENCES

Gait & posture

Pub Date : 2026-01-01 Epub Date: 2025-09-11 DOI: 10.1016/j.gaitpost.2025.109976

Apostolos Z. Skouras , Georgios Papagiannis , Ioannis Zafeiris , Fotini Soucacos , Athanasios Triantafyllou , Charilaos Tsolakis , Dimitrios Koulalis , Panagiotis Koulouvaris

Background

Tibial plateau fractures (TPF) are complex injuries that may lead to long-term functional deficits despite surgical management. This study aims to evaluate gait biomechanics in patients with severe tibial plateau fractures (Schatzker VI) treated with circular external fixation

Methods

Eighteen patients (mean age 46.3 ± 12.9 years; 19.8 months median follow up) underwent a fully instrumented three-dimensional gait analysis (3DGA), isokinetic strength testing of knee extensors and flexors, and completed self-reported outcomes for quality of life (EQ-5D) and knee-specific function (KOOS). An age- and sex-matched control group (n = 36) served as reference.

Results

While only subtle kinematic asymmetries were observed between the healthy and affected limbs, knee excursion in the operated limb was significantly reduced during stance (Δ = −2°, p = 0.039). Joints’ kinematics showed overall mild deviations, with no major angular deficits except from the hip and ankle joints. In contrast, kinetic impairments were evident. Ankle plantarflexion moment was reduced by 13.6 % in the operated limb compared to controls (p < 0.001, d = 1.08), and forward propulsive ground reaction force (GRF) was 5.5 % body mass lower (p < 0.001, d = 1.30). The second vertical GRF peak was also significantly diminished (−11.4 % body mass, p < 0.001, d = 1.03). The healthy limb exhibited milder but consistent kinetic alterations. Isokinetic testing revealed significant strength asymmetries, especially reduced quadriceps torque in the operated limb. EQ-5D and KOOS scores were significantly below normative values, though only moderately associated with gait metrics.

Conclusion

These findings highlight persistent kinetic impairments months after injury, emphasizing the need for comprehensive lower-limb evaluation and targeted rehabilitation programs that extent beyond the injured joint alone.

背景：胫骨平台骨折（TPF）是一种复杂的损伤，即使手术治疗也可能导致长期的功能缺陷。方法：18例患者（平均年龄46.3 ± 12.9岁；中位随访19.8个月）进行了全仪器三维步态分析（3DGA），膝关节伸屈肌等速力量测试，并完成了生活质量（EQ-5D）和膝关节特异性功能（oos）的自我报告结果。年龄和性别匹配的对照组（n = 36）作为参照。结果：虽然在健康肢和患肢之间仅观察到轻微的运动不对称，但站立时手术肢的膝关节偏移明显减少（Δ = -2°，p = 0.039）。关节的运动学显示整体轻度偏差，除了髋关节和踝关节外，没有明显的角度缺陷。相比之下，运动障碍很明显。与对照组相比，手术肢体的踝关节屈曲力矩减少了13.6% % （p ）。结论：这些研究结果突出了损伤后数月持续的运动障碍，强调需要进行全面的下肢评估和有针对性的康复计划，而不仅仅是受伤的关节。

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引用次数: 0