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Assessment of the level of static and dynamic balance in healthy people, practicing selected Latin American dances

Bojanowska Marta, Trybulec Bartosz, Zyznawska Joanna, Barłowska-Trybulec Marta, Mańko Grzegorz

Acta of Bioengineering and Biomechanics

2021

Vol. 23, no. 3

61--68

Purpose: The balance, known as the ability to independently maintain the body in a certain position and return to the starting position, can be divided into static and dynamic balances. Social Latin American dances (salsa, bachata) require dancers to do a characteristic figure, however, they are not trained as intensively as dancing sports. The aim of the study was to assess the static and dynamic balances of dancers, who are regularly dancing those selected Latin American dances, by comparison with those who do not. Methods: The study was conducted among 34 dancers from a Krakow Dancing School and, 37 students of the Jagiellonian University, aged 21–35. A SIGMA balance platform was used to measure static and, the Y-Balance Test platform to assess dynamic balance. The Student’s T-test, MannWhitney U-test and Spearman’s rank correlation coefficient were used in statistical analysis. Results: There were neither significant differences between right and left lower limbs of dancers, nor between values of tilts on the YBT platform in both investigated groups. Non-dancers, however, showed a slightly higher positive correlation between the deviations in the sagittal and frontal planes and the surface area, as well as between the path length and the surface area on the SIGMA platform when compared to dancers. Conclusions: The level of dynamic and static balances of dancing people is similar, when compared to non-dancers. The influence of practicing Latin American dances on the sense of balance require further studies.

Distribution of feet pressure on ground and maintaining body balance among 8–10-year-old children with and without external load application

Jaszczur-Nowicki Jarosław, Bukowska Joanna M., Kruczkowski Dariusz, Pieniążek Magdalena, Mańko Grzegorz, Spieszny Michał

Acta of Bioengineering and Biomechanics

2020

Vol. 22, no. 4

93--99

The aim of this study was to analyse the impact of applying an external load on the distribution of pressure on the plantar side of the foot and maintaining body balance, using the podobarographic platform. Methods: The study was conducted on 130 school children aged 8–10: girls (n = 68, body mass = 22.8 ± 6.0 kg, body height = 129.3 ± 7.5 cm) and boys (n = 62, body mass = 31.1 ± 6.5 kg, body height 134.4 ± 7.3 cm). The study involved 2 trials. At first, children stood on the platform assuming a natural position. Then, they put on a 5-kg backpack and stood on the platform once more. Results: The results indicate that after backpack loading, for the total research group of girls and boys, statistically significant differences were found in the distribution of foot force on the ground in the left forefoot ( p = 0.008), metatarsus ( p = 0.000) and heel areas ( p = 0.002). While in the right foot, these differences were noted for the forefoot ( p = 0.024) and metatarsus ( p = 0.000). The results of balance testing were also statistically significant. They concerned measurements of the body barycentre area (cop-bars p = 0.003), the barycentre area of the left foot (l-bars p = 0.034) and the parameter comparing distance to surface ratio (cop-lsf p = 0.000). Conclusions: It may be concluded that prolonged overloading with backpacks affects movement patterns, which may further lead to the acquisition and consolidation of postural defects.