RT journal article T1 Surf’s Up for Postural Stability: A Descriptive Study of Physical Activity, Balance, Flexibility, and Self-Esteem in Healthy Adults A1 Castro Maqueda, Guillermo Ramón de A1 Rosety Rodríguez, Miguel Ángel A1 Rivero Vila, Macarena A1 Fernández Santos, Jorge del Rosario A1 Abiko, Teppei A2 Didáctica de la Educación FísicaPlástica y Musical K1 aquatic sports K1 stability K1 flexibility K1 extensibility K1 self-esteem AB Background: This study examines balance, flexibility and self-esteem among healthy individuals who engage in surfing compared to those who do not surf. Methods: A cross-sectional study design was conducted with 124 participants divided into the following groups: Group 1: Surfers n = 42; Group 2: individuals performing over 3 h of physical activity per week n = 43; and Group 3: individuals performing fewer than 3 h of physical activity per week n = 39. To assess balance, the Star Excursion Balance Test (SEBT) and the Flamenco Test (FBT) were used, the sit-and-reach test (SRT) was used to measure hamstring extensibility, the Rosenberg Scale was used to measure self-esteem, and the International Physical Activity Questionnaire (IPAQ) was used to measure physical activity levels. Results: Regarding descriptive characteristics, G1 participants were significant older than those of G2 and G3 (p < 0.05 and p < 0.001, respectively). Moreover, there was a higher proportion of females in G3 than in G1 and G2 (p < 0.05). The results revealed significant differences in balance between the surfers and those engaging in fewer than 3 h of activity per week (p < 0.05). G1 obtained significantly higher results in SEBT-left leg than G2 and G3 (p < 0.001) and higher result in SEBT-right leg and FBT than G3 (p < 0.05) but no significant differences in self-esteem were found. Significant differences in flexibility were observed between males and females (p < 0.001). Conclusions: This result suggests that surfing could have a positive effect on balance. PB MDPI SN 2411-5142 YR 2025 FD 2025 LK http://hdl.handle.net/10498/39347 UL http://hdl.handle.net/10498/39347 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 05-nov-2026