Calibre Terminology
| Term | Description |
|---|---|
| Average Exhaled CO2 | This is the concentration (%) of CO2 in your exhaled breath averaged over the session. |
| Average Exhaled O2 | This is the concentration (%) of oxygen in your exhaled breath averaged over the session. |
| Average Heart Rate | Your average heart rate over the session, particularly useful when measuring resting biometrics. |
| Average Minute Volume | Your average volume per minute across the entire session. Like other session averages, this is particularly useful for when measuring resting biometrics. |
| Avg. Calorie Burn Rate | The average value (over the entire session) of your calorie burn rate. |
| Avg. Elevation | Not your actual elevation above sea-level but rather the equivalent elevation of the measured barometric pressure, which varies with weather as well as with actual elevation. |
| Avg. Fat Burn (%) | Your estimated average % of total calorie burn coming from fat metabolism over the entire session |
| Avg. HR | Your average heart rate (beats per minute) during the session, particularly useful when measuring resting rate biometrics. |
| Avg. Inhae/ExhaleE Ratio | The average ratio of inhalation to exhalation duration during your session. Exhalation is commonly longer, making the typical ratio less than 1. |
| Avg. RER | Your ratio of CO2 production to oxygen consumption over the entire session. |
| Avg. Respiratory Rate | Your average number of breaths per minute during the entire session. Particularly useful to track when you are trying to measure your resting state biometrics. |
| Avg. Respiratory Rate Uniformity | A measure of how uniform your respiratory rate was over the entire session. Perfectly uniform respiration would result in a value of 100%. |
| Avg. Tidal Volume | Your average volume of air per breath across the entire session. Like other session averages, this is particularly useful for when measuring resting biometrics. |
| Avg. Tidal Volume Uniformity | A measure of how uniform your breath volume was over the entire session. Perfectly uniform respiration would result in a value of 100%. |
| Avg. VCO2 | This is your average rate of CO2 production during the session, an important metric of your metabolism, exertion level and conditioning. |
| Avg. VCO2 per kG | This is your average rate of CO2 production during the session, relative to your body weight (in KG). |
| Avg. VO2 | This is your average rate of oxygen consumption during the session, an important metric of your metabolism, exertion level and conditioning. |
| Breath Count | The total number of complete breaths taken during the session. |
| Calorie Burn Rate | Your real time energy expenditure as determined from your oxygen consumption and CO2 production. |
| Calorie Count | The total amount of energy expended ("calories burned") during your session. Technically these are kilocalories, though commonly referred to as calories. |
| Calories | The total amount of energy expended ("calories burned") during your session. Technically these are kilocalories, though commonly referred to as calories. |
| Carb Burn % | An estimate of the % of your energy coming from carbohydrate metabolism. Since burning carbs releases more CO2 than fat, your breath can indicate how much of each is being used. |
| Carb Burn Rate | An estimate of how much carbohydrate metabolism contributes to your overall calorie burn rate. Since burning carbs uses less oxygen and releases more CO2 than fat, your breath can be used to estimate how much of each is being utilized. |
| CO2 Production | The rate of CO2 production, measured in standard liters per minute (SLPM). |
| CO2 Ventilatory Equivalent | The ventilation (liters of air) required for each liter of CO2 production. Lower values imply more efficient respiration. |
| Elevation (from Barometric Pressure) | Not your actual elevation above sea-level but rather the equivalent elevation of the measured barometric pressure, which varies with weather as well as with actual elevation. |
| Exhaled CO2 % | The concentration of CO2 in exhaled breath. Typically in between 3 - 5%, but wider variations are not unusual. A higher value at rest is associated with efficient, calm breathing. |
| Exhaled Oxygen % | The concentration of oxygen in exhaled breath. It is significantly lower than the ambient oxygen concentration (which is between 20 - 21%). |
| Fat Burn % | An estimate of the % of your energy coming from fat metabolism, as opposed to carbs and proteins. Since burning fat releases less CO2 than carbs, your breath can indicate how much of each is being used. |
| Fat Burn Rate | An estimate of how much fat metabolism contributes to your overall calorie burn rate. Since burning fat uses more oxygen and releases less CO2 than carbs, your breath can be used to estimate how much of each is being utilized. |
| Heart Rate | Heart rate and ventilation often increase hand in hand , especially during exertion. |
| Inhale/Exhale Ratio | The ratio of inhalation to exhalation duration. Exhalation time is commonly longer, making the typical ratio less than 1. |
| Last Breath Duration | Duration, in seconds, of the most recently completed single breath. |
| Last Breath Volume | The volume, in liters, of the most recently completed single breath. |
| Minute Volume | Also known as ventilation rate, this is a measure of the amount of air exhaled per minute. While less than 10 liters/min at rest is typical, it is also normal for the rate to increase dramatically with exercise. |
| O2 Ventilatory Equivalent | The ventilation (liters of air) required for each liter of net oxygen consumption. Lower values imply more efficient respiration. |
| Oxygen Consumption | The rate of oxygen consumption, measured in standard liters per minute (SLPM), determined from the difference between the inhaled and exhaled amounts. VO2 is a key metric of aerobic metabolism. |
| Peak Calorie Burn Rate | The highest value of your calorie burn rate during the session. |
| Peak HR | The highest heart rate (beats per minute) you reached during the session. |
| Peak Minute Volume | The highest ventilation rate (liters of air per minute) during the session, it is a particularly reliable metric of your effort level and conditioning. |
| Peak Respiratory Rate | The highest respiratory rate (breaths per minute) your reached during the session. |
| Peak Tidal Volume | Your highest volume of air per breath during the session. |
| Peak VO2 | The highest rate of oxygen consumption you reached during the session. If the session included maximal effort, this value may reflect your absolute VO2Max (not scaled to your body weight). |
| Peak VO2 per kG | The highest rate of oxygen consumption you reached during the session, relative to your body weight (in KG). If the session included maximal effort, this value could reflect your relative VO2Max. |
| Relative VCO2 (per KG) | This is the CO2 production relative to your body weight (i.e., per KG). |
| Relative VO2 (per KG) | This is the oxygen consumption relative to your body weight (i.e., per KG). It is an important metric for cardiovascular effort, conditioning and health. |
| Respiratory Exchange Ratio | This is your ratio of CO2 production to oxygen consumption. It is a key metabolic indicator which can be used to estimate fat/carb burn, anaerobic work, ketosis and other metrics. |
| Respiratory Rate | The number of breaths you take per minute. While a slow rate at rest is good, an increased as a result of stress or exertion is normal. |
| Respiratory Rate Uniformity | A measure of how uniform your respiratory rate is over a sequence of breaths. The maximum value of 100% indicates a sequence of breaths with identical durations. |
| Session Length (min) | The duration of your entire session in minutes. |
| Session Length (sec) | The duration of your entire session in seconds. |
| Standard Minute Volume | A measure of the amount of air exhaled per minute, similar to Minute Volume but expressed in "standard liters", namely corrected for the ambient temperature and pressure, which is the relevant starting point for metabolic metrics. |
| Tidal Volume | Tidal volume is the volume of air you exhale per breath. Similar to Last Breath Volume but averaged over about 5 breaths. |
| Tidal Volume Uniformity | A measure of how uniform your single-breath volume is over a sequence of breaths. The maximum value of 100% indicates a sequence of breaths with identical volumes. |
| Time (seconds) | Elapsed time since the beginning of the session. |
| Total Fat Burn | The amount of energy (in calories) you used during the session that was specifically derived from fat metabolism. |