Visualizations of rotational curves within a Standardized Gait Cycle

This dataset contains graphs and a movie. Both show visualizations of rotational curves in the transversal plane within a Standardized Gait Cycle from Vertebra prominens downwards, ending at the pelvis. They display 201 anonymous healthy people aged 18-70 years walking at 2,3,4, and 5 km/h on a treadmill. They are based on a SPSS (v23) syntax file and a relating graph template that can be found at our datasets as well. Files are numbered subsequently across all speeds and can be linked by number to its non-standardized counterpart in a further dataset.
Positive values show vertebral body rotation to the left, negative values show rotation to the right. Percent of the Standardized Gait Cycle (0-100%) is displayed on the abscissa, always starting with Initial Contact of the right foot. Within a Standardized Gait Cycle the duration of the stance phase right is expected to be 60% (Perry, 1992).
As can be seen in the graphs, interpolating spline functions work for average walking speed measurements leading to a more precise determination of relevant and characteristic points (e.g. maxima, phase shifts, lumbar and thoracic movement behavior), thereby aiding in in the clarification of individual features.

本数据集包含图形与影像文件，二者均展示了标准化步态周期（Standardized Gait Cycle）内横断面（transversal plane）的旋转曲线可视化结果，覆盖范围从隆椎（Vertebra prominens）向下延伸至骨盆。本数据集纳入201名年龄介于18至70岁的匿名健康受试者，受试者以2、3、4、5 km/h的速度在跑步机上行走。本数据集基于SPSS（v23）语法文件及配套的图形模板，两类文件均可在本数据集库中获取。所有文件按行走速度依次编号，可通过编号与另一数据集中的非标准化对应文件建立关联。
数值为正时表示椎体向左旋转，负值则表示椎体向右旋转。横轴为标准化步态周期占比（0-100%），统一以右脚首次触地（Initial Contact）作为计时起点。根据Perry于1992年的研究，标准化步态周期内右侧站立相（stance phase）的预期时长为60%。
如图形所示，插值样条函数（interpolating spline functions）适用于平均行走速度的测量场景，可更精准地确定相关特征点（如极值、相位偏移、腰椎与胸椎的运动行为），从而有助于明晰个体运动特征。