The CAVO Bracelet and Bracelet APP app has many self-quantitative indicators that can change our health and lifestyle. Some time ago, there were some differences between the user’s heart rate (HR) and heart rate variability (HRV).
Emmm, today I will talk about this opportunity. The article should be as short as possible, directly explain the problem, simply distinguish the two, understand the basic science behind each indicator, and everyone can quickly get useful information.
HR heart rate
Refers to the number of heartbeats per minute in a normal person’s quiet state, also called resting heart rate, generally 60 to 100 beats / min. Measured in beats per minute. It does not require exact time, just the average of the beats over a specific time period.
For example, 60 HRs per minute may mean 1 runout per second, or may mean an average of 1 runout every 0.5 seconds, 1.5 seconds, and so on.
HRV heart rate variability
It refers to a small change in the continuous normal RR interval, that is, the difference between each heartbeat time and the next heartbeat time.
The emphasis is on change. The time between beats is in milliseconds (ms) and is called “R-R interval” or “beat interval (IBI)”.
1. When do you use heart rate (HR)?
Your heart rate is the only indicator of whether you are in the recovery phase, so this is also an important indicator of how much intense training you should receive and whether your workouts are overly intense.
Usually, the first thing a professional athlete wakes up in the morning is to measure their pulse. The way they use it is usually to count the number of heart beats within ten seconds of their own, and multiply this value by six to get the result.
Heart rate and heart rate variability are generally considered to be similar indicators, but their use is completely different when used correctly. It is best to use heart rate when exercising. It is an important tool for training the cardiovascular system or monitoring the impact of training on the cardiovascular system in real time.
The photoelectric sensor used in the Gava wrist smart wearable device is ideal for measuring your resting heart rate. If your resting heart rate is higher than the resting heart rate, you should avoid too much intense exercise.
Usually, a low HR means rest and a high HR means exercise.
2. When do you use heart rate variability (HRV)?
HRV is best for rest. It is an important tool for understanding overall health, resilience and the ability to withstand various stresses. The HRV can be used as a daily checkup of the body to determine its readiness to tolerate stress on a particular date.
In this regard, HRVs are often used to optimize and personalize plans based on an individual’s readiness or recovery status. In addition, HRV can be used to determine how various lifestyles affect health and performance through trending HRV and related events over time.
In general, a low HRV (or a small change in heart beat) indicates that the body is under stress from sports, psychological events, or other internal or external sources of stress.
A higher HRV (or greater variability between heart beats) usually means that the body has a stronger ability to withstand stress or recover from previous stress.
At rest, high HRV is generally advantageous, while low HRV is disadvantageous.
A lower relative HRV is generally advantageous when in an active state, while a high HRV may be disadvantageous.
HRV represents the degree and regularity of heart rate changes, mainly reflecting the modulation of the heart rhythm by the nervous system. When you take a deep breath, you will accelerate your heartbeat; when you breathe out, your heartbeat will slow down. Therefore, in general, your heart rate is actually between 55-65, instead of being fixed at a constant number of 60.
Simply put, the more “active” the HRV changes, the stronger its neuromodulation and the healthier the heart. Conversely, it indicates that the body’s ability to adapt to the environment is worse, and may imply serious health damage. For example: cardiovascular disease, mental illness, neuropathy, etc.
Nowadays, the three smart wearable devices VAV/V09S/V12/V19 of Gavault have HRV monitoring function, which monitors heart rate variability data at night and explores a more intimate lifestyle. At your fingertips, it’s a new series of healthy products for everyone!
3.HR and HRV specific comparison
It turns out that the medical community believes that heart rate stability is better than instability, which means that the more consistent the interval between two heartbeats, the better. Later, the doctor discovered that the heart rate is too stable, not a good thing – more likely to die, infertility, syncope, myocardial infarction, diabetes, heart failure, high blood pressure and so on.
How to quantify this instability?
It is to use a set of indicators called heart rate variability HRV, the most commonly used is the SDNN, which is the standard deviation of the heartbeat interval.
The calculation method is to first calculate the average value of all heartbeat intervals (called NN), then calculate the difference between each NN and the average value, then square, re-average, and re-open the root number. The larger the value, the higher the dispersion of the heartbeat interval. Is it so complicated?
There is also a mean (MEAN) to reflect the average level of the R-R interval, or a mean standard deviation (SDANN) to reflect the slow variation of the HRV. This involves the calculation of the formula, no longer elaborate, afraid of halo.
In order to better explain the relationship and advantages and disadvantages of HR and HRV, Xiao Bian specially reviewed the summation function again. The following figure is an example: