Acute effects of high-intensity interval training and moderate-intensity continuous training on arterial stiffness in young obese women

Does intensity really matter regarding aerobic exercise reductions in wave reflection and central hemodynamics? Commentary on “The effect of acute aerobic exercise on central arterial stiffness, wave reflections, and hemodynamics in adults with diabetes: A randomized cross-over design” by Way et al.

“…1 A). Similar results were reported in our study, 15 in which we did not observe changes in PWV after either HIIE or MICE in obese women ( Fig. 1 B).…”

“…1 F and 1 G). 15 Like Way et al, 1 we also found a significant reduction in central systolic blood pressure after a single bout of HIIE. 15 It suggests that AIx seems to be more responsive to AE than PWV acutely.…”

“…AIx = augmentation index; AIx@75 = augmentation index corrected for 75 beats/min; cfPWV = carotid–femoral pulse wave velocity; HIIE = high-intensity interval exercise; HIIT = high-intensity interval training; HRmax = maximal heart rate; MICE = moderate-intensity continuous exercise; MICT = moderate-intensity continuous training. Adapted with permission from Hortmann et al 15 and de Oliveira et al 17 …”

Managing arterial health in adults with metabolic diseases: Is high-intensity interval exercise the answer? Response to the commentary by Lopes et al.

“…We thank Lopes et al 1 for their interest in our study and for writing an insightful commentary based on our findings, which were recently published in the Journal of Sport and Health Science , 2 and for their work. 3 As noted by the authors, there is consistency in several key findings between our laboratories, and this should serve as a basis for future investigation in this area. We agree that there has been little work examining the effect of high-intensity interval exercise (HIIE) on central arterial stiffness, wave reflections, and hemodynamic responses.…”

“… 4 As highlighted in the commentary by Lopes et al, 1 a transient reduction in wave reflections (as measured by augmentation index at a heart rate of 75 beats/min (AIx@75)) may be intensity dependent, given the findings from each of our respective studies in adults with diabetes 2 or obesity. 3 Both studies observed a significant transient reduction in AIx@75 following a single bout of HIIE; this did not occur after a single bout of moderate-intensity continuous exercise (MICE) or control. Although Lopes et al 1 highlighted that AIx represents the capacity of the peripheral vessels to dampen the propagation of the forward wave throughout the arterial tree, a recent study has found that AIx also represents cardiac mechanics.…”