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Aerobic power is enhanced in sport zone 3. The training intensity is higher than in sport zones 1 and 2, but still mainly aerobic. Training in sport zone 3 may, for example, consist of intervals followed by recovery. Running in this zone is especially effective for improving the efficiency of blood circulation in the heart and skeletal muscles.

If your goal is to compete at top potential, you will have to train in sport zones 4 and 5. In these zones, you run anaerobically, in intervals of up to 10 minutes. The shorter the interval, the higher the intensity. Sufficient recovery between intervals is very important. The training pattern in zones 4 and 5 is designed to produce peak performance.

The Polar sport zones can be personalized by using a laboratory measured HRmax value, or by taking a field test to measure the value yourself. When running in a sport zone, try to make use of the entire zone. The mid-zone is a good target, but keeping your heart rate at that exact level all the time is not necessary. Heart rate gradually adjusts to training intensity. For instance, when crossing from sport zone 1 to 3, the circulatory system and heart rate will adjust in 3-5 minutes.

Heart rate responds to exercise intensity depending on factors such as fitness and recovery levels, as well as environmental, factors. It is important to look out for subjective feelings of fatigue, and to adjust your training program accordingly.

A simple way of making use of the sport zones is making your target heart rate zones. For further instructions, see Plan Your Training (page 11).

After the exercise, exercise duration is displayed in sport zones. Access the Weekly display to see in which sport zones you have been exercising, and the duration spent in each sport zone.

The Polar ProTrainer 5 offers up to 10 sport zones to better serve your training needs and heart rate reserve.

OwnZone Training

Your running computer determines automatically an individual and safe exercise intensity zone: your OwnZone. The unique Polar OwnZone defines your personal training zone for aerobic training. The function guides you through your warm-up, and takes your present physical and mental condition into account. For most adults, OwnZone corresponds to 65-85% of maximum heart rate.

OwnZone can be determined in 1-5 minutes during a warm-up period by walking, jogging, or doing some other sport. The idea is to start exercising slowly at a light intensity, and to gradually increase intensity and heart rate. OwnZone is developed for use by healthy people. Some health conditions may cause heart rate variability-based OwnZone determination to fail. These conditions include high blood pressure, cardiac arrhythmias, and certain medications.

Listening to and interpreting the signals your body sends during physical exertion is an important part of getting fit. Since warm-up routines differ for different types of exercise, and since your physical and mental state may also vary from day to day (due to stress or illness), using the OwnZone function for every session guarantees the most effective heart rate target zone for that particular type of exercise and day.

Maximum Heart Rate

Maximum heart rate (HRmax) is the highest number of heartbeats per minute (bpm) during maximum physical exertion. It is individual and depends on age, hereditary factors, and fitness level. It may also vary according to the type of sport performed. HRmax is used to express exercise intensity.

Determining Maximum Heart Rate

Your HRmax can be determined in several ways.

•The most accurate way is to have your HRmax clinically measured, usually on a maximal treadmill or by taking a bicycle stress test supervised by a cardiologist or exercise physiologist.

•You can also determine your HRmax by taking a field test together with a training partner.

•You can obtain a HRmax-p score that predicts your HRmax by taking a Polar Fitness Test.

•HRmax can also be estimated by using the commonly used formula: 220 - age, although research shows

Background Information

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Polar RS400 user manual OwnZone Training, Determining Maximum Heart Rate
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RS400 specifications

The Polar RS400 is a sophisticated heart rate monitor designed for athletes and fitness enthusiasts who seek to optimize their training and performance. Combining advanced technology with user-friendly features, the RS400 stands out as a versatile tool for monitoring workouts and enhancing overall fitness levels.

One of the key features of the Polar RS400 is its precision heart rate measurement capability. It utilizes a comfortable, chest strap that transmits real-time heart rate data directly to the wrist unit. This ensures that users can monitor their heart rate continuously during workouts, allowing for more tailored training sessions that align with personal fitness goals.

The RS400 incorporates Polar's unique Smart Coaching technology, which provides customized training guidance and feedback. This includes heart rate target zones, allowing users to train at the optimal intensity level for fat burning, endurance, or performance improvement. The device also offers a Fitness Test feature that evaluates cardiovascular fitness and tracks changes over time, providing valuable insight into the user's fitness progression.

Another notable aspect of the Polar RS400 is its training program capabilities. Users can create and follow specific training plans that suit their individual needs, whether for general fitness or preparing for an event. The device can store data from multiple training sessions, making it easy to track and analyze performance over time. This history can be crucial for identifying patterns, progress, and areas that need improvement.

In terms of physical characteristics, the Polar RS400 features a sleek, lightweight design that ensures comfort during prolonged use. The display is clear and easy to read, even in various lighting conditions, while the user interface is intuitive, allowing athletes to navigate through features effortlessly. Furthermore, the device is water-resistant, making it suitable for various outdoor and recreational activities, including swimming and running.

Battery life is another aspect where the Polar RS400 excels, offering extended usage between charges, which is essential for long training sessions or competitions. Additionally, synchronization with Polar's software allows users to upload their training data for detailed analysis and progression tracking.

In conclusion, the Polar RS400 is an exceptional training companion for those serious about their fitness journey. With its advanced heart rate monitoring capabilities, Smart Coaching features, and a user-friendly design, it remains a top choice for athletes looking to maximize their training efficiency and achieve their fitness goals.
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