Physiological Changes Over Four Maximal Incremental Cycling Tests Within One Day

To investigate the impact of repeated maximal incremental cycling tests on physiological variables in trained and untrained individuals. Carbohydrate and energy requirements for rest and exercise were individually calculated and covered by means of standardized meals before the first and between the following tests. Maximal power output did not change significantly over the four tests in the T group (306 + or - 41 vs. 309 + or - 40 vs. 307 + or - 41 vs. 306 + or - 41 W; P = 0.23), but decreased from the third test in the UT group (201 + or - 35 vs. 198 + or - 36 vs. 192 + or - 33 vs. 186 + or - 30 W; P < 0.01).