[Exercise Load Classification and Perceptual Difference Awareness Training Based on Exercise Load Entropy Theory in...

Based on exercise load entropy measurement theory, this study aimed to investigate patterns of change in exercise load classification, perceptual difference awareness, and Weber fraction among university students across different exercise load levels, thereby providing theoretical support for personalized exercise load assessment.

From January to April 2025, 138 college students completed six incrementally increasing load tests on a cycle ergometer. Based on self-perceived load staging and perceptual discrimination, discrimination thresholds and Weber fractions were calculated for each load level. Data were analyzed using univariate analysis, correlation analysis, and multiple linear regression analysis.

With increasing exercise load levels, differential perception showed an overall downward trend, but the difference was not statistically significant (P = 0.156). The Weber fraction decreased progressively with increasing load level, from 0.49 at load level 2 to 0.11 at load level 6 (P = 0.034). Multiple linear regression analysis indicated that for each one-level increase in exercise load, the Weber fraction decreased by an average of 0.07 (95% CI: －0.12 to －0.02, P = 0.009). In addition, males had a lower Weber fraction than females (95% CI: －0.12 to －0.06, P < 0.001).

Among college students, the perception of exercise load changes nonlinearly as the load level increases, and the Weber fraction decreases as the load intensifies.