Anaerobic Power and Lactate Responses to Sequential Modified Wingate Anaerobic Tests

Several previous studies have been reported the time response of the oxidative and anaerobic contribution during exercise. Concerning high intensity exercise, the Wingate Anaerobic Test (WAnT) has been commonly used for analyzing the anaerobic pathway during single and multiple bouts. PURPOSE: to evaluate the balance between the glycolytic and phosphagens pathways over the muscular power during sequential short periods of high intensity cycling exercise. METHODS: Five physically active male subjects (22.2±2.2 yrs; 73.4±8.6Kg; 9.3±4.5% of body fat) were preliminarily selected for this study. After a familiarization test, they were submitted to two sets of five modified WAnT (MWAnT) (W1, W2, W3, W4, W5). Both the protocols consisted in pedaling for 10s with a workload of 0.075Kg/Kg, and after passive resting of 1 (R1) or 3 (R3) min, they repeated the exercise four times more. During all-out tests, the power output (PO) was measured (30Hz) and calculated the peak PO (PPO) and mean PO (MPO), and further, the blood lactate concentration (BLC) was measured immediately after each 10s bout. Differences among tests were calculated by repeated measures ANOVA (□ = 0.05). RESULTS: as expected, associated to an increase of the BLC (P < 0.05), all PO parameters showed a tendency to decrease through tests. Although no significant differences were achieved, PPO was lower in W5 (746.3±107.2W) than W1 (868.6±43.0W) for R1 (p=0.12) and, similarly, decreased of 774.9±54.8W (W1) to 759.8±115.5W (W5) for R3 (p=0.78). The BLC presented an increase higher for R1 (9.0±5.4mM, p=0.004) than R3 (6.3±3.5mM, p=0.03), nevertheless, no significant differences were attained between R1 and R3 (p=0.20). CONCLUSION: Although R1 has resulted in higher blood lactate accumulation than R3 during sequential MWAnT, concerning PO parameters, no significant differences were achieved between the two resting intervals.