title: Cardiovascular responses to plyometric exercise are affected by workload in athletes.
abstract: BACKGROUND
  With regard to blood pressure responses to plyometric exercise and decreasing blood pressure after exercise (post-exercise hypotension), the influence of different workloads of plyometric exercise on blood pressure is not clear.
  
  
  OBJECTIVE
  The purpose of this investigation was to examine the effects of a low, moderate and high workload of plyometric exercise on the post-exercise systolic (SBP) and diastolic blood pressure (DBP), heart rate (HR) and rate-pressure product (RPP) responses in athletes.
  
  
  METHODS
  TEN MALE ATHLETES (AGE: 22.6 ±0.5 years; height: 178.2 ±3.3 cm; and body mass: 75.2 ±2.8 kg) underwent PE protocols involving 5 × 10 reps (Low Workload - LW), 10 × 10 reps (Moderate Workload - MW), and 15 × 10 reps (High Workload - HW) depth jump exercise from a 50-cm box in 3 non-consecutive days. After each exercise session, SBP, DBP and HR were measured every 10 min for a period of 70 min.
  
  
  RESULTS
  No significant differences were observed among post-exercise SBP and DBP when the protocols (LW, MW and HW) were compared. The MW and HW protocols showed greater increases in HR compared with LW. Also the HW indicated greater increases than LW in RPP at post-exercise (p < 0.05).
  
  
  CONCLUSIONS
  All protocols increased SBP, HR and RPP responses at the 10(th) and 20(th) min of post-exercise. With regard to different workloads of plyometric exercise, HW condition indicated greater increases in HR and RPP and strength and conditioning professionals and athletes must keep in their mind that HW of plyometric exercise induces greater cardiovascular responses.
authors.affiliation: Department of Exercise Physiology, Faculty of Sport Sciences, University of Guilan, Rasht, Iran.
authors.forename: Hamid
authors.initials: H
authors.lastname: Arazi
authors.affiliation: Young Researchers and Elite Club, Roudbar Branch, Islamic Azad University, Roudbar, Iran.
authors.forename: Abbas
authors.initials: A
authors.lastname: Asadi
authors.affiliation: Department of Exercise Physiology, Faculty of Sport Sciences, University of Guilan, Rasht, Iran.
authors.forename: Seyed Amir
authors.initials: SA
authors.lastname: Mahdavi
authors.affiliation: Department of Exercise Physiology, Faculty of Sport Sciences, University of Guilan, Rasht, Iran.
authors.forename: Seyed Omid Mirfalah
authors.initials: SO
authors.lastname: Nasiri
keywords: diastolic blood pressure; different workload; heart rate; plyometric; systolic blood pressure