Ann Rehabil Med.  2013 Jun;37(3):364-372. 10.5535/arm.2013.37.3.364.

Exaggerated Response of Systolic Blood Pressure to Cycle Ergometer

• Kim YJ
• Chun H
• Kim CH

• KMID: 2219533
• DOI: http://doi.org/10.5535/arm.2013.37.3.364

Abstract

OBJECTIVE
The aim of this study is to exam the effects of exercise modes on the systolic blood pressure and rate-pressure product during a gradually increasing exercise load from low to high intensity.
METHODS
Fifteen apparently healthy men aged 19 to 23 performed the graded exercise tests on cycle ergometer (CE) and treadmill (TM). During the low-to-maximal exercises, oxygen uptake (VO2), heart rate (HR), systolic blood pressure (SBP) and rate-pressure product were measured.
RESULTS
CE had a significantly lower maximum VO2 than TM (CE vs. TM: 48.51+/-1.30 vs. 55.4+/-1.19 mL/kg/min; p<0.001). However, CE showed a higher maximum SBP (SBPmax) at the all-out exercise load than TM (CE vs. TM: 170+/-2.4 vs. 154+/-1.7 mmHg; p<0.001). During the low-to-maximal intensity increment, the slope of the HR with VO2 was the same as VO2 increased in times of the graded exercise test of CE and TM (CE vs. TM: 2.542+/-0.100 vs. 2.506+/-0.087; p=0.26). The slope of increase on SBP accompanied by VO2 increase was significantly higher in CE than in TM (CE vs. TM: 1.669+/-0.117 vs. 1.179+/-0.063; p<0.001).
CONCLUSION
The SBP response is stronger in CE than in TM during the graded exercise test. Therefore, there is a possibility that CE could induce a greater burden on workloads to cardiovascular system in humans than TM.

Keyword

Cardiovascular system; Cardiopulmonary exercise test; Ergometry; Systolic pressure; Hemodynamics

MeSH Terms

Aged
Blood Pressure
Cardiovascular System
Ergometry
Exercise
Exercise Test
Heart Rate
Hemodynamics
Humans
Male
Oxygen
Oxygen

Figure

• 

  Fig. 1 Hemodynamic differences between cycle ergometer (CE) and treadmill (TM) at the maximum level of workload (n=15). VO2max, maximum oxygen uptake; HRmax, maximum heart rate; SBPmax, maximum systolic blood pressure; RPPmax, maximum rate-pressure product.

• 

  Fig. 2 An example of hemodynamic patterns of the heart rate, systolic blood pressure (SBP) and rate-pressure product (RPP) according to the work rates on cycle ergometer (CE) and treadmill (TM) during the gradual exercise test (n=1). VO2, oxygen uptake.

• 

  Fig. 3 The slope differences between cycle ergometer (CE) and treadmill (TM) exercise during the graded exercise test. (A) Slope for heart rate (HR) to oxygen uptake (VO2): HR is the y-axis and VO2 is the x-axis. (B) Slope for systolic blood pressure (SBP) to VO2: SBP is the y-axis and VO2 is the x-axis. (C) Slope of rate-pressure product (RPP) to VO2: RPP is the y-axis and VO2 is the x-axis. (D) Slope for HR to SBP: HR is the y-axis and SBP is the x-axis. All values are mean±standard error.

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