Abstract
Ischemic preconditioning (IPC) is a method that has been used prior to resistance exercise to improve performance. However, little is known about its effect before a resistance exercise training session on hemodynamic responses. Thus, the aim of the study was to verify the acute effect of IPC before a session of resistance exercises on the systolic blood pressure (SBP), diastolic blood pressure (DBP), and mean blood pressure (MBP) of trained normotensive trained individuals. Sixteen men (25.3 ± 1.7 years; 78.4 ± 6.2 kg; 176.9 ± 5.4 cm, 25.1 ± 1.5 m2.kg−1) trained in resistance exercise (RE) (5.0 ± 1.7 years) were evaluated in five sessions on non-consecutive days. The first two sessions’ subjects performed one repetition maximum (RM) test and retest, and for the next three sessions, they performed the experimental protocols: (a) IPC + RE; (b) SHAM + RE; (c) RE. The RE protocol consisted of six multi-joint exercises, three sets at 80% of 1RM until concentric failure. Blood pressure was monitored pre-session, immediately after and every 10 min for 60 min after RE. IPC consisted of 4 × 5 min of vascular occlusion/reperfusion at 220 mmHg. SHAM (fake protocol) consisted of 20 mmHg of vascular occlusion/reperfusion. The IPC + RE protocol showed significant reductions on SBP, DBP, and MBP compared with SHAM + RE (p < 0.05) and with RE (p < 0.05). The IPC + RE protocol presented a greater magnitude and duration of post-exercise hypotension (PEH) from 20 to 60 min after exercise in SBP (−11 to 14 mmHg), DBP (−5 to 14 mmHg), and MBP (−7 to 13 mmHg). Therefore, we can conclude that the application of IPC before an RE session potentiated the PEH in normotensive individuals trained in resistance exercise.
Highlights
Resistance exercise has been recommended as a nonpharmacological intervention to prevent and treat cardiovascular diseases [1,2]
We can conclude that the application of Ischemic preconditioning (IPC) before an RE session potentiated the post-exercise hypotension (PEH) in normotensive individuals trained in resistance exercise
The present study investigated the acute effect of IPC applied before a resistance exercise session on systolic blood pressure (SBP), diastolic blood pressure (DBP), and mean blood pressure (MBP) of trained normotensive youth
Summary
Resistance exercise has been recommended as a nonpharmacological intervention to prevent and treat cardiovascular diseases [1,2]. Several studies [3,4,5,6,7,8,9] have shown benefits on the regulation of blood pressure (BP) in normotensive trained individuals and suggested resistance exercise as an important strategy to control blood pressure to promote cardiovascular health in normotensive or hypertensive participants [10,11] and to promote acute reductions in post-exercise blood pressure [1,2,3,4,5,6,7,8,9,10,11,12]. Resistance exercise has traditionally been used to promote PEH [3,4,5,6,7,8,9], its effects have not yet been fully elucidated [15], and further investigations are needed when the resistance exercise is associated with vascular occlusion prior to exercise
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