Cardiorespiratory responses during deep water running with and without horizontal displacement at different cadences

Objective: To compare the cardiorespiratory responses during deep water running with and without displacement at different cadences.Methods: Twelve young women performed deep water running with and without displacement during 4 min at three separate cadences: (a) 60 bpm; (b) 80 bpm; and (c) 100 bpm. The heart rate (HR), ventilation (Ve) and oxygen uptake (VO2) were collected in the last minute of each test. Two-way ANOVA for repeated measures was used with Bonferroni's post hoc test (p < 0.05) to compare variables.Results: The results showed a significant increase in all variables as the cadence increased (HR: p < 0.001; Ve: p < 0.001; VO2: p < 0.001). In addition, the VO2 and Ve values were significantly higher for deep water running with displacement compared to running without displacement (VO2: p = 0.047; Ve: p = 0.007). However, there was no significant difference in HR with and without displacement (p = 0.065).Conclusions: The results indicate that the increase in both cadence and displacement results in significant cardiorespiratory responses as a result of deep water running. This finding is important for adapting exercise prescription to the goals of participants