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A new method for detecting anaerobic threshold by gas exchange.
From incremental exercise tests on 10 subjects, the point of excess CO2 output (AT) predicted closely the lactate and HCO-3 thresholds and could be more reliably determined by the V-slope method.
Anaerobic threshold and respiratory gas exchange during exercise.
The I-min incremental work rate test is associated with changes in gas exchange which can be used as sensitive on-line indicators of the AT, thus bypassing the need for measuring arterial lactate or acid-base parameters to indicate anaerobiosis.
Effect of interbreath fluctuations on characterizing exercise gas exchange kinetics.
An expression has been derived for the number of square-wave repetitions required for a specified parameter confidence using methods b and c; method a being less appropriate for parameter estimation of noisy gas exchange kinetics.
Parameters of ventilatory and gas exchange dynamics during exercise.
- B. Whipp, S. Ward, N. Lamarra, J. Davis, K. Wasserman
- PhysicsJournal of applied physiology: respiratory…
- 1 June 1982
The exponential behavior of VE, VO2, and VCO2 in response to moderate exercise is best described by a model that incorporates only the second phase of the response.
Oxygen uptake kinetics for various intensities of constant-load work.
Optimizing the exercise protocol for cardiopulmonary assessment.
- M. Buchfuhrer, J. E. Hansen, T. Robinson, D. Sue, K. Wasserman, B. Whipp
- MedicineJournal of applied physiology: respiratory…
- 1 November 1983
For evaluating cardiopulmonary function with incremental exercise testing by either treadmill or cycle, the VO2 max was significantly higher on tests where the increment magnitude was large enough to induce test durations of 8-17 min, but the AT was independent of test duration.
Predicted values for clinical exercise testing.
For predicting maximal oxygen uptake and oxygen pulse in an overweight man, it is preferable to use age and height rather than age and weight.
Exercise Pathophysiology in Patients With Primary Pulmonary Hypertension
Patients with PPH can safely undergo noninvasive cycle ergometer CPET to their maximal tolerance and the CPET abnormalities were consistent and characteristic and correlated well with New York Heart Association symptom class.
A test to determine parameters of aerobic function during exercise.
It is concluded that a profile of aerobic function in man can be obtained from a single short-duration ramp test and the parameters determined faithfully reproduced those obtained from several standard procedures.