Effects of aerobic running interval training in hypotensive response of military with different standards of aerobic conditions

Exercise has been considered an important non-pharmacological intervention to control blood pressure (BP). Therefore, the present study investigated the effects of one session of high intensity Aerobic Interval Training (AIT) upon post-exercise hypotension (PEH) levels in subjects with different fitness patterns. Sixteen young men were separated in two groups: one with higher (GH; n=8; VO_2max=55.5ml·kg^-1·min^-1) and the other with lower (GL; n=8; VO_2max=42.1ml·kg^-1·min^-1) aerobic conditioning. Both groups performed seven repetitions of 400m running, with intensities of 117% (GL) and 113% (GH) of the velocity at maximal oxygen uptake (vVO_2max), with 1min30s recovery intervals between stimuli. Systolic (SBP) and diastolic (DBP) BP values were registered before (Pre) and at 0, 10, 20, 30, 45 and 60 min post-exercise (Post). Only GL showed PEH at 60 min in Post compared to Pre (113.8±2.5 vs. 124.6±2.2 mmHg; respectively, p=0.03). In regard to DBP, both groups presented PEH in Post compared to Pre - GL from 20 min and GH from 10 min until 60 min Post (p<0.02). GL showed a lower mean BP (MBP) in Post compared to Pre during the 60 min registered (p<0.01) and GH only at minute 45 (p<0.02). There were no differences between groups in regard to SBP, DBP and MBP (p>0.05). The results suggest that higher relative intensities of AIT may induce to a more pronounced reduction in BP levels until one hour after the effort.

Blood Pressure; Post-exercise Hypotension; Interval Training; Normotensive