Borg Rating of Perceived Exertion (RPE) Scale—Dyspnea
Borg Rating of Perceived Exertion Dyspnea Scale (Borg RPE-D) · Also known as: Borg Scale, Borg RPE, Borg 0-10
The Borg Rating of Perceived Exertion (RPE) Scale is a simple 0–10 (or original 6–20) numerical rating scale that quantifies a patient's subjective perception of dyspnea or general effort during activity or exercise testing. Developed by Swedish psychophysicist Gunnar Borg in the 1970s–1980s, the Borg Scale is ubiquitous in cardiopulmonary medicine, rehabilitation, and exercise physiology for monitoring symptom severity, guiding exercise intensity, assessing treatment response, and ensuring patient safety during testing and rehabilitation.
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When to use it
The Borg Scale is indicated across all cardiopulmonary settings: (1) exercise stress testing in cardiology and pulmonology to monitor symptom severity and guide test termination, (2) cardiac and pulmonary rehabilitation to guide daily exercise intensity (prescribe Borg 4–5 target), (3) clinical assessment of dyspnea during office visits (e.g., 'How breathless are you at rest today?' on Borg scale documents serial progression), (4) telehealth and home-based monitoring (patients report Borg level via phone, helping clinicians assess remote symptoms and guide medication adjustments), (5) research measuring dyspnea or exertion in clinical trials, and (6) patient self-monitoring and log-keeping (patients record daily Borg levels in symptom diary to track disease trajectory).
Strengths & limitations
- Simple and universally understood: single numerical rating (0–10) is intuitive, even for patients with low literacy; requires <30 seconds to administer.
- Real-time assessment: captures subjective symptom at moment of measurement, reflecting true patient experience during activity.
- Validated across populations: extensively used and validated in cardiac, pulmonary, orthopedic, and healthy populations; normative data abundant.
- Responsive to exertion and intervention: Borg score increases with exercise intensity and decreases with training/therapy improvement; sensitive outcome for rehabilitation trials.
- Practical in diverse settings: works in lab (exercise test), clinic (office assessment), home (patient diary), and telehealth (verbal report); no equipment needed.
- Safety guidance: Borg levels 7–8 provide objective stopping criterion for exercise testing, reducing risk of adverse events.
- Subjective and variable: Borg rating depends on patient's self-awareness, honesty, and cognitive ability; some patients overestimate or underestimate dyspnea.
- No standardized anchor calibration: while descriptors are provided, individual interpretation of 'moderate' vs. 'somewhat hard' varies, introducing inter-patient variability.
- Does not identify dyspnea etiology: Borg captures sensation but not cause (cardiac dyspnea vs. deconditioning vs. anxiety); clinical context is needed.
- Limited usefulness in severely impaired patients: patients with cognitive impairment, aphasia, or severe distress may not reliably rate on 0–10 scale.
- Requires periodic re-anchoring: patients should be reminded of anchor definitions periodically; without reinforcement, rating patterns may drift over time.
- Does not replace objective vital signs: high Borg (9–10) without vital sign abnormalities may suggest anxiety; conversely, normal Borg with abnormal vitals suggests silent ischemia or impaired symptom perception.
Frequently asked
Should I use Borg 0–10 or original Borg 6–20?
Both are valid and correlated (Borg 6–20 ≈ Borg 0–10 × 2). The 0–10 scale is simpler and more intuitive for most patients; 6–20 offers finer gradation and was designed to approximate heart rate ÷ 10 for easy mental calculation during lab testing. Most modern clinical and rehabilitation settings use 0–10; 6–20 is more common in research. Choose based on patient population and institutional tradition.
What Borg level should I prescribe for aerobic training?
Target Borg 4–5 (moderate to somewhat hard) for aerobic cardiovascular training in most rehabilitation patients. This intensity is high enough to improve fitness (sustained heart rate ≈70–80% max) but low enough to be sustainable and safe. Very deconditioned patients may start at Borg 3; advanced or high-fitness patients may progress to Borg 5–6. Individual tolerance and medical clearance determine exact prescription.
Can Borg indicate silent ischemia?
No, Borg measures perceived dyspnea and cannot detect asymptomatic (silent) ischemia. A patient with normal Borg but abnormal ECG changes or biomarkers during stress testing has silent ischemia—high-risk finding. This is why objective monitoring (ECG, blood pressure, oxygen saturation, troponin) is essential alongside Borg; Borg is safety guide but not diagnostic alone.
How do I adjust Borg expectations for different exercises?
Expected Borg varies by exercise: walking is lower (Borg 3–4 for moderate pace) than running (Borg 5–6 for moderate pace). Patients should achieve target Borg for their prescribed activity. If a patient achieves Borg 5 walking at 3 mph but only Borg 3 walking at 2 mph, the increase suggests improved fitness. Re-evaluate activity prescription if Borg consistently too low or too high.
Is Borg validated for non-exercise dyspnea assessment?
Yes, Borg can be used to rate dyspnea at rest or during routine activities (e.g., 'What is your Borg level right now at rest?' or 'Borg level while walking to the bathroom?'). Serial office Borg measurements are useful for tracking disease progression or treatment response. However, context matters: Borg at rest in anxious patient may be high despite good physiology; Borg should be interpreted alongside clinical signs (edema, orthopnea, exercise tolerance) and vital signs.
Sources
- Borg, G. A. (1982). Psychophysical bases of perceived exertion. Medicine & Science in Sports & Exercise, 14(5), 377–381. DOI: 10.1249/00005768-198205000-00012 ↗
- Borg, G. (1998). Borg's Rating of Perceived Exertion and Pain Scales. Human Kinetics. link ↗
How to cite this page
ScholarGate. (2026, June 3). Borg Rating of Perceived Exertion Dyspnea Scale (Borg RPE-D). ScholarGate. https://scholargate.app/en/cardiology/dyspnea-scale-borg
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