Key result
The Karvonen/heart rate reserve method prescribed exercise outside the range of ventilatory threshold heart rate +/- 10% in 15% to 62% of patients with left ventricular systolic dysfunction.
Why the study?
Do standard exercise prescription methods (HRR, RPE, %VO2) accurately correlate with exercise intensity below ventilatory threshold in patients with left ventricular systolic dysfunction?
Population
52 patients with left ventricular systolic dysfunction, mean age 52 +/- 13 years, 37 males/15 females, mean…
Comparison
Exercise prescription using Karvonen/heart rate… vs Heart rate at ventilatory threshold determined…
Design
Cross-sectional
Authors
Loading...
HRR prescriptions may misalign with ventilatory threshold in LVSD; hypothesis-generating for CPET-guided targets in prospective studies.
Observational (n=52)
Do standard exercise prescription methods (HRR, RPE, %VO2) accurately correlate with exercise intensity below ventilatory threshold in patients with left ventricular systolic dysfunction?
p-value: p=<0.001
Standard exercise prescription methods like HRR and RPE are inaccurate for patients with LVSD, suggesting cardiopulmonary exercise testing should be used to identify heart rate at ventilatory threshold for safe exercise training.
Strzelczyk et al. (2001) conducted an observational in left ventricular systolic dysfunction (LVSD) (n=52). Karvonen/heart rate reserve (HRR) method and rating of perceived exertion (RPE) vs. Heart rate at ventilatory threshold (VT) was evaluated on Correlation of HRR and RPE methods with exercise intensity below ventilatory threshold (p=<0.001). The Karvonen/heart rate reserve method prescribed exercise outside the range of ventilatory threshold heart rate +/- 10% in 15% to 62% of patients with left ventricular systolic dysfunction.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: