This study aims to analyze the possibility of developing balance ability, highlighting symmetries, asymmetries, and levels of proprioception, in children aged 11–13 from practicing indoor and outdoor climbing and bouldering/escalation exercises. The research subjects were 54 children (both boys and girls) aged 11–13, divided into two groups: an experimental group of 28 students (14 boys and 14 girls) who participated in an extracurricular climbing activity twice a week during the 2023–2024 school year, and a control group of 26 students (13 boys and 13 girls) who did not engage in extracurricular motor activities. During the initial and final evaluations, 12 tests were used to assess balance ability, symmetries, and asymmetries—10 tests were conducted using the Sensbalance MiniBoard 1.0 platform in addition to the Standing Stork test for each leg. The analysis of the results showed statistically significant differences between the groups, with the experimental group recording improvements in symmetry and proprioception related to increased balance levels. This work is addressed to teachers, trainers, and physical therapists who, in the educational process, aim to develop balance and proprioception as objectives that improve children’s motor skills. In conclusion, the study results reveal the impact of a program based on climbing and escalating exercises in extracurricular activities on the development of static and dynamic balance ability.

Psychomotor development plays an important role in neuromuscular regulation, movement efficiency, and football-specific performance during early adolescence. This study investigated changes associated with an integrated psychomotor-oriented intervention program in psychomotor abilities, technical performance, and functional physiological responses in U13 football players. A longitudinal quasi-experimental pretest–posttest design was applied to 17 male youth football players during the competition season. The 12-week intervention program was integrated into regular football training and included psychomotor, neuromuscular, coordinative, and football-specific exercises. Psychomotor assessment included sprint performance, postural stability and control, agility, and reactive neuromuscular parameters, complemented by football-specific technical tests and functional match monitoring using the Polar Vantage V system. An external comparative U13 team (n = 17) was additionally evaluated for football-specific technical performance. Significant within-group improvements were observed in 20-m sprint performance (Δ = −0.19 s; p < 0.001; d = −1.13), lateral bipedal postural stability (Δ = +20%; p < 0.001; d = 1.35), and vertical bipedal postural control (Δ = +10%; p = 0.006; d = 0.77). All three technical tests improved significantly within the intervention group (Test 1: p = 0.002, d = 0.88; Test 2: p = 0.016, d = 0.75; Test 3: p = 0.037, d = 0.63), while between-group comparisons of change scores were not statistically significant. Functional monitoring during official match play identified a significant reduction in Speed Z3 exposure (p = 0.016; d = −0.70), while no statistically significant changes were observed in the other physiological or locomotor variables. Spearman correlation analyses identified significant associations among psychomotor, technical, and functional variables (ρ = −0.753 to −0.488; p < 0.05). Given the small sample, non-randomized design, incomplete multidimensional assessment in the comparative group, and absence of biological maturation assessment, the findings should be interpreted as preliminary evidence of within-group changes associated with psychomotor-oriented training rather than as definitive causal effects.