Masters Thesis

Hypotensive Effects Following Upper Vs Lower Body Exercise in Normotensive and Prehypertensive Individuals.

Exercise has been used as a method to achieve, maintain, and improve health, fitness, and sport performance. Furthermore, it is often prescribed to treat, manage, or prevent the onset of hypertension. This may be more important for individuals that have a resting systolic (SBP) and diastolic blood pressure (DBP) categorized by the American Heart Association as prehypertensive (PHT). Aerobic exercise leads to a post-exercise reduction in SBP and DBP compared to rest, called post-exercise hypotension (PEH), however, it is unknown whether upper (UBRE) and lower body resistance exercise (LBRE) in isolation results in similar reductions. Therefore, the purpose of this study was to compare the effects of PEH between upper and lower body resistance exercises in normotensive (NT) and PHT individuals. Twenty-three recreationally trained PHT males (age = 24.4±3.5yrs.; ht = 176.2±7.7cm; mass = 86.6±20.9kg) performed UBRE (bench press, lat pull down, seated shoulder press) and LBRE (back squat, leg curl, knee extension) in a counterbalanced fashion (4 sets of 6 repetitions at 75% 1-RM with 2 minutes rest between sets, and 1 minute rest between exercise) on 2 separate days followed by 60 minutes of quiet seated rest. Blood pressure (BP) was measured immediately post exercise and every 10 minutes for 60 minutes thereafter. For SBP and DBP there was condition x time interaction where SBP and DBP were lower at different time points for UBRE and LBRE. Also no differences were seen between NT and PHT. Similar effects of PEH occur with UBRE and LBRE between NT and PHT populations.

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