Inter-Limb Differences in Impact Force, Segmental Accelerations, and Target Contact Time during the ITF Taekwon-Do Turning Kick: Dataset
Description
This dataset accompanies the study entitled “Inter-Limb Differences in Impact Force and Segmental Accelerations at the Instant of Peak Force during the ITF Taekwon-Do Turning Kick.” It contains anonymized trial-level data collected from ITF Taekwon-Do athletes performing turning kicks with the left and right legs. The dataset includes maximum resultant impact force, effective mass, target contact time, and resultant velocity and acceleration values for the foot, shank, and thigh. Effective mass was operationally estimated as the ratio of maximum resultant impact force to maximum resultant foot acceleration recorded during the same kick. Target contact time represents the duration of contact between the kicking foot and the target and is expressed in seconds. The workbook contains four worksheets: (1) README, providing an overview of the dataset and its structure; (2) Data_dictionary, describing all variables, units, and coding; (3) Analysis_dataset, containing the data retained for analysis after outlier removal; and (4) Excluded_rows, containing the excluded observations for transparency and reproducibility. Participant names were replaced with pseudonymous identifiers. The same identifier is used consistently across all worksheets. Each row represents one recorded kick trial. Because multiple kicks were performed by each athlete, repeated trials should not be treated as independent observations in inferential analyses. In the accompanying study, repeated trials were averaged separately for each athlete and each leg, with the athlete serving as the unit of analysis.
Files
Steps to reproduce
The dataset contains trial-level observations of ITF Taekwon-Do athletes performing turning kicks with the left and right legs. To reproduce the analytical dataset and the analyses: Use the “Analysis_dataset” worksheet as the primary dataset. The “Excluded_rows” worksheet contains observations excluded as outliers and is provided for transparency. Treat each row as a single kick trial. Identify repeated observations using “Athlete ID” and “Kicking leg”. For each athlete and each kicking leg separately, average the repeated kick trials for all variables included in the analysis. The athlete, rather than the individual kick, should be treated as the unit of analysis. Use the resulting athlete-by-leg dataset to compare the left and right legs and to examine relationships among maximum resultant impact force, effective mass, segmental accelerations, and target contact time. Effective mass is calculated for each kick as: Me = Fmax / afoot where Me is the operational estimate of effective mass (kg), Fmax is the maximum resultant impact force (N), and afoot is the maximum resultant foot acceleration (m/s²) recorded during the same kick. Target contact time represents the duration of contact between the kicking foot and the target and is expressed in seconds. Variable definitions, units, and coding are provided in the “Data_dictionary” worksheet. Additional information on the structure and use of the dataset is provided in the “README” worksheet.