Firdaus Hendry Prabowo Yudho, Fahmy Fachrezzy, Firmansyah Dlis
This study aimed to assess the impact of a structured physical activity intervention on postural stability using a wireless inclinometer sensor. By analyzing postural displacements across different stance conditions, the study sought to determine whether targeted exercises could enhance balance control, particularly in more challenging stances. Ten male participants completed a 16-session physical activity intervention, with postural stability assessed before and after using a wireless inclinometer sensor. The sensor, attached to the sternum, recorded 3-axis (X, Y, Z) displacements with a sampling rate of 100 Hz and an accuracy of 0.2° for pitch and roll angles. Participants performed bipedal, unipedal, and tiptoe stances, each held for 10 seconds, with one trial per condition. Postural stability was analyzed along the sagittal (X) and frontal (Y) axes, and data were processed using Wilcoxon signed-rank tests. Post-intervention analysis revealed significant reductions in sagittal axis displacement across all stance conditions, indicating improved postural stability. In the tiptoe stance, sagittal displacement decreased by 32.5% (p < .01, effect size = .85), demonstrating the greatest improvement among all conditions. Unipedal stance showed a 24.7% reduction (p = .03, effect size = .78), confirming enhanced stability in single-leg support. In contrast, bipedal stance exhibited a smaller, non-significant improvement of 10.4% (p = .11, effect size = .42), reflecting the inherently greater stability of this posture. Frontal axis improvements were observed but did not reach statistical significance. Tiptoe stance displacement along the Y-axis decreased by 15.8% (p = .07), unipedal stance by 12.3% (p = .09), and bipedal stance by 6.7% (p = .14). This study reveals that structured plan physical activities within the domain of physical education curriculum significantly improves postural stability in adults, particularly in more challenging stances that demand greater balance control. The improvements were most pronounced in the sagittal axis, highlighting the potential for targeted interventions to enhance postural alignment and stability. Future research should include larger, more diverse cohorts to confirm these findings and assess their applicability to broader populations. © 2025 Masaryk University. All rights reserved.
Department of Physical Education Health and Leisure Studies, Universitas Suryakancana, Indonesia; Department of Physical Education, Doctoral Program Universitas Negeri Jakarta, Jakarta, Indonesia
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