Whole-body kinematic adaptations (and its reliability) to running on an unstable, irregular, and compliant surface: Data and supplemental files

This data set contains the raw data and participant information underlying a study on whole-body movement adaptations (and its reliability) to running on an unstable surface in recreational runners. The underlying study compared the whole-body running motion and indicators of whole-body motor control between running on asphalt (stable) and a wood chip track (unstable) on five separate testing days. A parallel study investigated the reliability of XSens-based joint angles within- and between-days.

The running motion was measured outdoors using an inertial-based motion analysis suit (Xsens Link). This measurement system computes segment positions of 23 body segments and joint angles for 22 joints. On each of the five testing days, runners completed one "test" on each of the two surfaces. One "test" included 2 runs back and forth along a 140m path. The data from each run were split and the 180° turn in the middle was cut out, yielding two repetitions per run. Therefore, the data set includes four files per "test" (run 1 - repetition 1, run 1 - repetition 2, run 2 - repetition 1, run 2 - repetition 2) for a total of 40 files per participant (four files x two surfaces x five testing days). The sample rate of the motion analysis suit was 240 Hz but the data were downsampled to 120 Hz during post-processing.

This data set contains the following items:
1) "Raw_JointAngles_And_SegmentPositions.zip": This file contains 17 folders; one for each of the 17 runners that were evaluated in this study. Each folder contains four .mat files. a) Angles.mat - joint angle time series, b) Positions.mat - segment position time series, c) RF_indices.mat - the frame numbers of the detected right foot strikes (see associated publication), d) Mean_Speed.mat - the average running speed for each surface and day. Angles.mat and Positions.mat contain 40 files corresponding to the 40 running repetitions as explained above. NEW in version 5: This folder now also contains Angles_recal.mat. These data can be used to estimate the calibration error of the XSens suit. The publication of the reliability methods and results will be linked as soon as it becomes available.

2) "PCA_Output.mat": The segment positions in the underlying study were analyzed by means of a kinematic principal component analysis. This file contains the resulting "principal positions" (PP_TrialSubj matrix, 40 running repetitions x 17 runners), "PCs" (the principal component vectors), "EV" (the eigenvalues). More details about the PCA and the data processing modalities can be here:https://www.frontiersin.org/articles/10.3389/fninf.2019.00024/full

3) "Participant Information.xlsx": Basic participant information.

4) "Angles_Columns_Names.xlsx" & "Positions_Columns_Names.xlsx": Descriptors of position and angle signals.

5) "TrialNumbers.xlsx": Explanation of the forty running repetitions.

6) "Supplementary Figures.docx" & "Supplementary Videos.zip": Supplementary Files of the associated publication

本数据集包含了一项关于休闲跑者在不稳定表面上跑步时全身运动适应（及其可靠性）的研究的原始数据和参与者信息。该基础研究对比了跑者在沥青（稳定）和木屑跑道（不稳定）上五次独立测试日的全身运动和全身运动控制的指标。一项并行研究探讨了基于XSens的关节角度的日内和日间可靠性。

跑步运动通过基于惯性的运动分析服（Xsens Link）在户外进行测量。此测量系统计算了23个身体节段的段位和22个关节的角度。在五个测试日的每一天，跑者在两种表面上的每种表面完成一次“测试”。一次“测试”包括沿着140米路径往返两次跑步。每次跑步的数据被分割，中间的180°转弯被截除，从而每次跑步产生两个重复。因此，该数据集包括每个“测试”（跑步）四个文件（跑步1 - 重复1，跑步1 - 重复2，跑步2 - 重复1，跑步2 - 重复2），每位参与者总计40个文件（四个文件 x 两个表面 x 五个测试日）。运动分析服的采样率为240赫兹，但在后期处理过程中数据被下采样至120赫兹。

本数据集包含以下内容：
1) “Raw_JointAngles_And_SegmentPositions.zip”：此文件包含17个文件夹；每个文件夹对应于在本研究中评估的17名跑者之一。每个文件夹包含四个.mat文件。a) Angles.mat - 关节角度时间序列，b) Positions.mat - 段位时间序列，c) RF_indices.mat - 检测到的右脚着地帧数（参见相关出版物），d) Mean_Speed.mat - 每个表面和日的平均跑步速度。Angles.mat和Positions.mat包含40个文件，对应于上述40次跑步重复。新版本5：此文件夹现在还包含Angles_recal.mat。这些数据可用于估计XSens服的校准误差。可靠性方法和结果的出版物将在可用时链接。
2) “PCA_Output.mat”：在基础研究中，通过运动学主成分分析方法分析了段位。此文件包含结果“主位”（PP_TrialSubj矩阵，40次跑步重复 x 17名跑者），“PCs”（主成分向量），“EV”（特征值）。有关PCA和数据处理的更多详细信息，请参阅：https://www.frontiersin.org/articles/10.3389/fninf.2019.00024/full
3) “Participant Information.xlsx”：基本参与者信息。
4) “Angles_Columns_Names.xlsx” & “Positions_Columns_Names.xlsx”：位置和角度信号的描述符。
5) “TrialNumbers.xlsx”：四十次跑步重复的解释。
6) “Supplementary Figures.docx” & “Supplementary Videos.zip”：相关出版物的补充文件。