Background and Study Aim. To investigate how bilateral pedaling asymmetries change at exercises with different levels of intensity. Material and Methods. Eight students of cycling, average age 25.4 years, were investigated. In the experiment, we recorded the pedal force of the right and left legs during three consecutive exercises of different intensity 35%, 55% and 85% respectively. To quantify the difference in physical parameters of pedaling between the left and right legs, we used two approaches that complement each other in the analysis of bilateral asymmetry. One approach involved determining an asymmetry index, and other was statistical analysis. Results. The Student's t-test indicated that the difference between the power samples for the left and right pedals decreased at 85% exercise intensity vs. 55% with a statistical significance of α = 0.05. The bilateral asymmetry in most cases decreased or in two cases remained unchanged. The cases where there was no statistically significant difference between the power samples for both legs at 85% and 55% intensity levels had the lowest asymmetry index. Conclusions. The bilateral pedaling asymmetry is reduced at 85% exercise intensity compared to the 55% one. The reduction in asymmetry index ranges from 1% to 14.1%, Combining the asymmetry index and the Student's t-test can increase the informativeness of pedaling power data when analyzing bilateral asymmetry.

中文翻译：

---

自行车测功机中不同运动强度水平下脚蹬力的双侧不对称性

背景和研究目标。研究在不同强度水平的锻炼中双侧蹬踏不对称如何变化。材料与方法。调查了八名骑自行车的学生，平均年龄为25.4岁。在实验中，我们记录了三个连续强度分别为35％，55％和85％的连续运动中左右腿的踏板力。为了量化左右腿之间踩踏的物理参数的差异，我们在双边不对称性分析中使用了两种相辅相成的方法。一种方法涉及确定不对称指数，另一种方法是统计分析。结果。学生的t检验表明，在运动强度相对于85％的情况下，左右脚踏板的力量样本之间的差异减小了。55％，统计学意义上的α= 0.05。在大多数情况下，双侧不对称性降低或在两种情况下保持不变。在强度水平为85％和55％的情况下，双腿的力量样本之间无统计学差异的情况下，不对称指数最低。结论。运动强度为55％时，双脚蹬踏不对称性降低了85％。不对称指数的减少范围为1％至14.1％，将不对称指数与Student t检验结合起来可以提高分析双侧不对称时踩踏力量数据的信息性。在强度水平为85％和55％的情况下，双腿的力量样本之间无统计学差异的情况下，不对称指数最低。结论。运动强度为55％时，双脚蹬踏不对称性降低了85％。不对称指数的减少范围为1％至14.1％，将不对称指数与Student t检验结合起来可以提高分析双侧不对称时踩踏力量数据的信息性。在强度水平为85％和55％的情况下，双腿的力量样本之间无统计学差异的情况下，不对称指数最低。结论。运动强度为55％时，双脚蹬踏不对称性降低了85％。不对称指数的减少范围为1％至14.1％，将不对称指数与Student t检验结合起来可以提高分析双侧不对称时踩踏力量数据的信息性。