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Excerpt
Although the oxygen uptake during the Wingate anaerobic power test has been quantified, the degree of muscle deoxygenation during such intense anaerobic exercise has not been evaluated. This study was designed to compare the oxygen uptake and muscle deoxygenation during the 30 sec Wingate (Win30), 45 sec modified Wingate (Win45) and a stepwise incremental exercise to exhaustion(Inc) in healthy men. Nine volunteers (mean ±sd for age = 15.7±1.4 yr, mass = 65.1±9.3 kg, peak VO2 = 50.6±6.9 ml/kg/min) completed the Inc test, followed by Win30 and Win45 in random order (load factor of 0.075 g/kg body mass) in three separate trials. Cardiorespiratory measurements were monitored breath by breath using a computerized metabolic cart interfaced with an ECG. Minimum tissue absorbency(TAmin) an index of muscle deoxygenation, was recorded noninvasively from the right vastus lateralis using a two wave length near infrared spectrometer (Runman, NIM Inc) interfaced with a computer. Data were recorded during exercise followed by six minutes of recovery and averaged every 5 sec for evaluation. Results of ANOVA and post hoc Scheffe tests are given: Table
These results suggest that short duration intense anaerobic exercise elicits muscle deoxygenation levels similar to that observed during maximal incremental exercise despite a significantly lower oxygen uptake.
