highly significantp < 0.001
After introducing mean-centered MT as a covariate, the main effect of Running Speed remained highly significant in both the anaerobic (F = 57.52, p < 0.001, η 2 p = 0.673) and aerobic (F = 46.01, p < 0.001, η 2 p = 0.622) models, with no significant univariate interaction effects involving MT or sex on the rate of decline.