The Development of an Assessment Device for Gymnastic Training: An Iron Cross Position on The Rings

Abstract

This research aimed to develop an innovative assessment device for evaluating gymnastic training in the challenging Iron Cross position on rings. Following a research and development project design, the prototype was created based on force theory, measuring muscle strength in both arms during the rings’ downward pull. The device, consisting of a tension sensor on the rings and a controller box, exhibited a resolution of 0.01 kilograms, with a random error of ±0.001 and an accuracy rate of 99.58 percent. Subsequently, testing involved 10 male students with a gymnastics background, selected through simple sampling. Participants underwent arm force assessments 10 times. Descriptive statistics were utilized for data analysis, and differences in left and right forces were examined using the Wilcoxon Signed Ranks Test at a significance level of  .05.

Results indicated the device’s ability to detect variations in arm force according to individual strength levels, without statistical difference. The coefficient of variation (C.V.) ranged from 3.38 to 47.09 percent, averaging 16.36±9.32 percent, indicating a moderate level of variation. When assessing C.V. differences, both left and right sides showed no significant distinctions. In conclusion, the device effectively measures both arms’ force, rendering it suitable for assessing muscle strength, balancing arm forces, and evaluating progression in practicing the gymnastics Iron Cross position on rings equipment. For further development, the device's display could be enhanced to analyze balance and exertion relative to user weight. Additionally, incorporating wireless systems and enabling online data display with retrospective viewing would improve both the device's robustness and user convenience.