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A two-test protocol (incremental/ramp (IWT) + supramaximal constant-load (CWR)) to affirm max and obviate reliance on secondary criteria has only been validated in highly fit children. In girls (n = 15) and boys (n = 12) with a wide range of VO₂max (17–47 ml/kg/min), we hypothesized that this procedure would evince a VO₂-WR plateau and unambiguous VO₂max even in the presence of expiratory flow limitation (EFL). A plateau in the VO₂-work rate relationship occurred in 75% of subjects irrespective of EFL There was a range in RER at max exercise for girls (0.97–1.14; mean 1.06 ± 0.04) and boys (0.98−1.09; mean 1.03 ± 0.03) such that 3/15 girls and 2/12 boys did not achieve the criterion RER. Moreover, in girls with RER > 1.0 it would have been possible to achieve this criterion at 78% VO₂max. Boys achieved 92% VO₂max at RER = 1.0. This was true also for HRmax where 8/15 girls’ and 6/12 boys’ VO₂max would have been rejected based on HRmax being < 90% of age-predicted HRmax. In those who achieved the HRmax criterion, it represented a VO₂ of 86% (girls) and 87% (boys) VO₂max. We conclude that this two-test protocol confirms VO₂max in children across a threefold range of VO₂max irrespective of EFL and circumvents reliance on secondary criteria.

Kinesiology is an academic discipline with a body of content that can be drawn on to support professions and to solve important public health problems. The Kansas State Physical Activity Systems Framework defines a new approach to structure the discipline. Central to the framework is the rejection of a kinesiology subdisciplinary approach and the adoption of an integrated “cell-to-society” systems approach. Each level of physical activity systems is addressed in undergraduate and graduate education and research. Supporting the framework are two research and education teams: exercise physiology and exercise behavioral science. These teams provide core integrated academic discipline content expertise and expertise for integrating professional application areas, such as public health. The framework has evolved over 20 years at Kansas State University, where today the Department of Kinesiology delivers high-quality extramurally-funded research; BS, MS, MPH, and PhD programs; and outreach in a cost-effective manner.