Conventional Testing Produces Submaximal Values for Oxygen Uptake in Elite Runners

Area of Science:

• Exercise Physiology
• Sports Science
• Cardiorespiratory Fitness

Background:

• Maximal oxygen uptake (V˙O2max) is a key indicator of cardiorespiratory fitness.
• Traditional incremental exercise tests are commonly used to assess V˙O2max.
• Recent studies suggest decremental tests may yield higher V˙O2max values in trained individuals.

Purpose of the Study:

• To compare V˙O2max values obtained from a decremental exercise test versus a traditional incremental test in elite athletes.
• To determine if a decremental test elicits higher V˙O2max than an incremental test in this population.
• To assess the impact of a decremental test on subsequent incremental test performance and V˙O2max.

Main Methods:

• Nine male elite runners performed three maximal uphill running tests on separate days.
• Tests included two traditional incremental tests (INC1, INC2) and one V-shape decremental test.
• The V-shape test involved an initial speed decrease followed by an increase, mimicking incremental stages.

Main Results:

• V˙O2max was significantly higher during the V-shape test compared to the initial incremental test (INC1).
• Despite lower running speed in the V-shape test, V˙O2max was elevated.
• V˙O2max in the second incremental test (INC2) was also higher than in INC1, indicating sustained effects.

Conclusions:

• A sufficiently intense decremental exercise test can elicit higher V˙O2max in elite athletes than traditional incremental tests.
• The elevated V˙O2max achieved through the decremental test is maintained during a subsequent incremental test.
• This suggests decremental protocols may offer a more potent stimulus for assessing maximal aerobic capacity in elite athletes.