<p>The Pulse-Respiration Quotient (PRQ) indicates the state of cardiorespiratory activity. The normal quotient range is 4 to 5. PRQ readings are affected by one&#39;s age, sex, physiological constitution, physical activity, psychophysical and cognitive activity, body posture, environmental influences, and state of health.</p>

<p>The PRQ is calculated by dividing the Heart Rate by the Breathing Rate. It provides additional knowledge that cannot be obtained when analyzing the Heart Rate and the Breathing Rate separately.</p>

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