Dataset for: Physical activity and first-year college students' social adaptation: the mediating role of interpersonal competence and the moderating role of campus exercise atmosphere

<p dir="ltr">This dataset supports the study "Physical activity and first-year college students' social adaptation: the mediating role of interpersonal competence and the moderating role of campus exercise atmosphere." Data were collected via an anonymous cross-sectional online questionnaire from 724 first-year undergraduate students at three universities in China. Measures included physical activity, interpersonal competence, campus exercise atmosphere, and social adaptation, together with demographic covariates (gender, age, major, urban/rural residence, BMI, and prior exercise habit).

The package contains the anonymized dataset, a codebook describing all variables and coding, and the R analysis scripts used for the reliability, common-method-bias, correlation, mediation, moderation, and moderated-mediation analyses. No directly identifying information was collected. The study was approved by the Institutional Review Board of the School of International Business, Jilin International Studies University (approval number JISU-IRB-2026-0204).</p>