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. Author manuscript; available in PMC: 2023 Mar 9.
Published in final edited form as: Compr Physiol. 2022 Mar 9;12(2):3193–3279. doi: 10.1002/cphy.c200033

Table 1.

Commonly Used Intensity Ranges

Intensity classification Aerobic exercise: %heart rate reserve Resistance exercise: %1 repetition max
Low 40–50 <50
Moderate 50–70 50–70
High 70–85 70–85
Very high/vigorous 85–100 85–100