Differences in dynamic stability across different height barriers between obese and average men

doi:10.12307/2025.355

Abstract

Abstract: BACKGROUND: Obesity negatively affects dynamic balance during walking, and crossing barriers is a more routine functional activity that requires more stability in controlling body posture.
OBJECTIVE: To investigate the differences in dynamic stability between obese and average males, and to assess the balance ability of obese males using a relatively more challenging obstacle crossing.
METHODS: A total of 24 male youths (12 each in the obese and normal groups) were recruited to complete the tests of walking on level ground and crossing obstacles of different heights (4 cm, 11 cm, 15 cm) in random order. Kinematic and dynamic data were collected using the Qualisys motion capture system and Kistler force stage. Statistical analysis was performed using two-factor (2 groups * 4 movement types) repeated measures analysis of variance.
RESULTS AND CONCLUSION: The obese group had a lower step speed than the normal group (P < 0.05), the proportion of the first single support period decreased and the proportion of the second double support period increased when crossing the 11 cm versus 15 cm hurdles (P < 0.05). When walking on level ground, the margin of stability in the internal and external directions in the normal group was greater than that of the obese group (P < 0.05). When crossing the 4 cm hurdles, the margin of stability in the obese group was less than that in the normal group (P < 0.05). When crossing the 11 cm hurdles, there was no significant difference between the two groups in the anterior-posterior direction (P > 0.05), while there was a significant difference in the internal-external direction (P < 0.05). When crossing the 15 cm hurdles, the margin of stability in the obese group was lower than that in the normal group (P < 0.05). Overall, obesity decreases the body’s ability to control the body, reduces dynamic stability during crossing the barrier, and increases the risk of falls compared with the general population. In addition, compared with level ground walking, the decrease in the dynamic stability when crossing barriers is more significant in the obese group than the general population.

中国组织工程研究杂志出版内容重点：组织构建；骨细胞；软骨细胞；细胞培养；成纤维细胞；血管内皮细胞；骨质疏松；组织工程

Key words: obesity, obstacle crossing, margin of stability, balance, postural control, stability, falls, two-way repeated measures analysis of variance

CLC Number:

Zhang Wenli, Zhao Ziqi, Liang Leichao, Tang Yunqi, Wang Yong. Differences in dynamic stability across different height barriers between obese and average men[J]. Chinese Journal of Tissue Engineering Research, 2025, 29(11): 2319-2326.

Figures/Tables 7

组(P=0.027)；在跨越11 cm障碍时，两组在前-后方向的动态稳度无显著性差异(P=0.705)；在跨越15 cm障碍时，两组在前-后方向的动态稳度差异有显著性意义(P < 0.001)。肥胖组4项测试的前后方向动态稳度表现出显著性差异(P < 0.001)。肥胖组在跨越4 cm障碍时，与跨越15 cm障碍比较，前后侧动态稳度无显著性差异(P=0.21)，与平地行走(P < 0.001)和跨越11 cm障碍(P=0.002)之间差异有显著性意义；肥胖组在跨越11 cm障碍时，与跨越15 cm障碍比较，前后侧动态稳度无显著性差异(P=0.862)，与其他两项测试比较，则表现出显著性差异(P平地行走< 0.001，P4 cm障碍=0.003)；肥胖组在跨越15 cm障碍时，与平地行走比较，前后侧动态稳度表现出显著性差异(P < 0.001)，与其他两项测试之间差异无显著性(P4 cm障碍= 0.21，P11 cm障碍=0.862)。普通组4项测试之间动态稳度存在显著性差异(P < 0.001)；普通组在跨越4 cm障碍时，与跨越11 cm障碍比较，前后方向动态稳度无显著性差异(P=0.234)，与其他两项测试之间则表现出显著性差异(P平地行走< 0.001，P15 cm障碍= 0.003)；普通组在跨越11 cm障碍时，与平地行走比较，前后侧动态稳度无显著性差异(P=0.234)，与其他两项测试间均有显著性差异(P4 cm障碍< 0.001，P15 cm障碍< 0.001)；普通组在跨越15 cm障碍时，前后方向动态稳度大于平地行走时(P < 0.001)，小于跨越4 cm障碍时(P=0.003)，但与跨越11 cm障碍间无显著性差异(P=0.27)。 2.7 摆动腿髋关节最大屈曲时刻的内外方向动态稳度双因素重复测量方差分析结果显示，障碍高度与组别的交互作用对动态稳度的影响不显著[F(3，33)=3.025，P=0.053]，遂进行主体内效应分析。如图5所示，在不同步行模式下，两组内外方向动态稳度均为正值。但肥胖组平地行走(P=0.039)、跨越11 cm障碍(P=0.004)、跨越15 cm障碍(P=0.032)时与普通组对比表现出显著性差异。平地行走与跨越3个高度障碍对比，内外方向动态稳度表现出显著性差异(P4 cm障碍< 0.001，P11 cm障碍< 0.001，P15 cm障碍< 0.001)；跨越4 cm障碍与跨越11 cm障碍、15 cm障碍间均无显著性差异(P11 cm障碍=0.935，P15 cm障碍= 0.069)，跨越11 cm障碍与15 cm障碍间亦无显著性差异(P=0.564)。 2.8 不良事件试验过程中24名受试者均未发生不良事件。"

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