PMID: 25791757Mar 21, 2015Paper

Resistance exercise and acute blood pressure responses

The Journal of Sports Medicine and Physical Fitness
T GjovaagP Mirtaheri

Abstract

Compare the acute hemodynamic and cardiovascular responses of high load/low repetition resistance training (RT) to low load/high repetition RT. Thirteen healthy men performed four sets of 4 repetition maximum (RM) and 20RM leg--extensions without breath--holding. The RT was conducted in a randomized order and with 48 hours between bouts. Non--invasive beat--to--beat systolic and diastolic blood--pressure (SBP/DBP) was measured on the finger, while non--invasive cardiac output (CO) was assessed beat--to--beat by impedance--cardiography. Mean ± SD resting SBP/DBP and CO were 126 ± 14/73 ± 9 mmHg and 5.6 ± 9 L min --1 , respectively. Exercise SBP/DBP values increased to 154 ± 22/99 ±18 and 203 ± 33/126 ± 19 mmHg following 4RM and 20RM RT, respectively (compared to rest, all;; p < 0.001), and 20RM SBP/DBP values were higher than 4RM values (both, p < 0.001). The SBP increased from the first to the fourth set of exercise following the 20RM load (p < 0.01), but not so for the 4RM load. Exercise SBP/DBP values following the 4th rep of 20RM exercise (154 ± 18/91 ± 14), was similar to the 4RM values, but different to the 20th rep of the 20 RM loading (both; p < 0.001). CO increased to 10.8 ± 2.6 and 13.9 ± 2.2 L min --1 , following 4RM ...Continue Reading

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