Data file Exploring the Relationship Between Well-Being and Match Playing Time in U17 players

Data file – “Data file Exploring the Relationship Between Well-Being and Match Playing Time in U17 players.xlsx”Description:This Excel spreadsheet contains raw and processed longitudinal data collected from elite Danish U-17 football players during the 2021/22 competitive season. It includes bi-weekly WHO-5 well-being scores and match playing time per player. The data were used to examine seasonal fluctuations in well-being and its temporal relationship with match involvement, as reported in the associated manuscript. Syntax file – “Syntax.docx”Description:This document contains the full statistical syntax and model specifications used in the analysis of the study, including Mplus input for the two-level cross-lagged panel model. The syntax outlines the within- and between-level structure for estimating temporal associations between well-being and playing time, supporting transparency and reproducibility. Data file – “Data well_Being under_17.dat”Description:This plain text data file contains the standardized data used in the Mplus analyses described in the manuscript. Variables include well-being (WB), playing time (PT), and ID codes for multilevel modeling. It is formatted for direct input into Mplus and includes missing data codes as defined in the syntax.