Heart Rate Monitors - Keeping an Eye on Heart
出典: くみこみックス
Heart rate monitors are electronic equipments used to continually keep track of a person's heart rates. These devices are sometimes called cardiac monitors. They are used to measure and record heart rates in real time. The very first models that appeared in the late 1970s and early 1980s were initially as supporting instruments for the training of athletes. Electrodes were attached to the chest area and had transmitters that sent data to a receiver. Modern versions are still comprised of a transmitting strap fastened around the chest and then send heart rate information to a wrist-worn receiver.
Strapless variations of heart rate monitors are available. They are worn around one hand but are not as reliable and effective in getting accurate readings as compared to heart rate belts. Some strapless heart monitors require users to put two fingers on sensors on the receiver. Other models have mini straps that are fastened to a finger to get a reading. Heart rate monitors work by detecting a heart beat or a pulse of an individual. A signal is then sent or transmitted to the receiver which then measures and displays the heart rate of the user. This transmission can be through a simple radio wave or coded signals that are unique for every unit. Coding of signals prevents interference, called cross-talk, with similar heart rate transmitters. With this, anyone can have the ability to monitor his or her heart rate which is used as a basis for exercising or maintaining a healthy heart.
Heart rate monitors gained acceptance during the 1990s as people began to consider its effectiveness in measuring heart rates, particularly while training and working-out. Health product industries and manufacturers responded to this by incorporating heart rate monitoring systems into their machines for exercising, such as the treadmill, stationery bikes, and other trainers. Heart rate monitors have become essential tools for safe training and exercising. For athletes and health conscious people, it has become common to train with heart rate belts. The strapless models normally suffice for those who are just keeping a tad on their heart, especially individuals with a history of heart attacks and heart ailments.
An individual can better control his training intensity by using heart rate monitors. It is easier to accomplish training goals with them. If someone wishes to trim down and lose extra weight, he should train within a specified heart rate training zone for that end, which is fat metabolism which is at 60 - 70 per cent of the maximum heart rate. The length of the training when losing weight when using heart rate monitors should be about 60 minutes.
A very important aspect of training with heart rate monitors is an awareness of the heart rate training zones and its concepts. Training zones are stated as percentage of an individual's maximum heart rate. These percentages of the training zones parallel the type of training desired and the target goals. However, these are made as simply recommendations and are not absolute. They may be uses as basis or starting points. At 50 - 60 per cent zone, the type training is burning fat and keeping fit. At the 60 - 70 per cent zone, the training is losing weight. At 70 - 80 per cent, training is for building aerobic endurance. At 80 - 90 per cent, it is for increasing the lactic ceiling of an individual. At 90 - 100 per cent, training is now to raise the maximum aerobic limits. Each training zone has different purposes.
Heart Rate Monitors
Heart Rate Monitor
http://www.heartrate-monitors.co.uk
