Cardio May Be a Waste of Time Without This Knowledge

The most important factor for improving cardiorespiratory fitness (cardio or CR) is the intensity of the workout.  Changes in CR fitness are directly related to how "hard" an aerobic exercise is performed. The more energy expended per unit of time, the greater the intensity of the exercise, the greater the effect on cardiorespiratory fitness.

You have to know how hard is "hard" to determine if an aerobic exercise like running is producing a CR training effect or if it's just burning a few calories. The heart rate during work or exercise is an excellent indicator of how much effort you are exerting. Only by keeping track of your heart rate during a workout can you be sure that the intensity is enough to improve your CR fitness level. In other words, your ability to monitor your heart rate is the single most important key to success in CR training.

Training Heart Rate (THR) = Desired Intensity of the Workout

THR is the heart rate at which you need to exercise to get a training effect. The U.S. Army fitness gurus have given us two methods to determine THR. The first method, percent maximum heart rate (%MHR) is simpler to use, while the second method, percent heart rate reserve (%HRR) is more accurate.

%MHR Method

With this method the THR is figured using the estimated maximal heart rate. You can estimate your maximum heart rate (MHR) by subtracting your age from 220. Thus, a 20 year old would have an estimated maximum heart rate (MHR) of 200 beats per minute (220 - 20 = 200).

A person who is in poor shape should exercise at 70 percent of his MHR; if he is in relatively good shape, at 80 percent MHR; and, if he is in excellent shape, at 90 percent MHR.

Examples:

A 20 year old in good physical condition would have a THR of 160 beats per minute (BPM). 220 - 20 = 200 * .80 = 160 BPM.

A 30 year old in good physical condition would have a THR of 152 beats per minute (BPM). 220 - 30 = 190 * .80 = 152 BPM.

A 40 year old in poor physical condition would have a THR of 126 beats per minute (BPM). 220 - 40 = 180 * .70 = 126 BPM.

%HRR Method

A more accurate way to calculate THR is the %HRR method. The range from 60 to 90 %HRR is the THR range in which people should exercise to improve their CR fitness levels. If you know your general level of CR fitness, you can determine which percentage of HRR is a good starting point 

for you. For example, a person in excellent physical condition could start at 85 percent of his HRR; if he is in reasonably good shape, at 70 percent HRR; and, if he is in poor shape, at 60 percent HRR.

Most CR workouts should be conducted with the heart rate between 70 to 75 percent HRR to attain, or maintain, an adequate level of fitness. A person who has reached a high level of fitness may derive more benefit from working at a higher percentage of HRR, particularly if he cannot find more than 20 minutes for CR exercise.

Exercising at any lower percentage of HRR than 60 does not give the heart, muscles, and lungs an adequate training stimulus. Exercising at more than 90 percent can be dangerous. Before anyone begins aerobic training, he should know his THR (the heart rate at which he needs to exercise to get a training effect).

The example below shows how to figure the THR by using the resting heart rate (RHR) and age to estimate heart rate reserve (HRR). A 20 year old in reasonably good physical shape is the example.

STEP 1: Determine the MHR by subtracting your age from 220. i.e. MHR = 220 - 20 = 200.

STEP 2: Determine the resting heart rate (RHR) in beats per minute (BPM) by counting the resting pulse for 30 seconds, and multiply the count by two. A shorter period can be used, but a 30 second count is more accurate. This count should be taken while you are completely relaxed and rested. For this example we use a RHR of 69 BPM.

STEP 3: Determine the heart rate reserve (HRR) by subtracting the RHR from the estimate MHR. i.e. HRR = 200 - 69 = 131 BPM

STEP 4: Calculate THR by (1) multiplying HRR by the relative fitness level as a percentage and (2) adding the result to the HRR.  For example, our 20 year old in good physical condition will exercise at 70% HRR.

(1)  .70 * 131 = 91.7

(2)   91.7 + 69 = 160.7

In summary, a reasonably fit 20-year-old with a resting heart rate (RHR) of 69 BPM has a training heart rate (THR) goal of 161 BPM.

During aerobic exercise, the body will usually have reached a "Steady State" after five minutes of exercise, and the heart rate will have leveled off. At this time and, immediately after exercising, is when you should monitor your heart rate to see if you are within your desired THR range.

If your pulse rate is below the THR, you must exercise harder to increase your pulse to the THR. If your pulse is above the THR, you should reduce the intensity to reduce the pulse rate to the THR goal.

Blood Pressure Monitors – Why You Should Consider Monitoring At Home

Of all the organs of our body the heart is without doubt the most critical and rightly so as, if it stops pumping blood around the body and delivering vital oxygen to the other organs, including the brain, death will occur very quickly.

Despite its importance however many of us pay little if any attention to the health of our heart until forced to do so, when it is often too late. And yet keeping a check on the heart by simple routine measurement of our blood pressure could not be easier.

As with most things in life, if the heart starts to run into problems then there will be warning signs giving us time to take remedial action and these warning signs often come in the form of abnormally high or low blood pressure.

The principle role of the heart is to take freshly oxygenated blood and pump it through the main arteries and then through a network of smaller blood vessels to all parts of the body. As the heart contracts forcing blood out into the arteries pressure is exerted on the walls of the arteries. Then, as the heart relaxes and its chambers refill ready to pump again the pressure in the arteries falls.

By measuring these two pressure levels we can get an indication of just how well the heart is pumping blood around the body and thus see whether or not it is working normally.

Until quite recently it was necessary to visit the doctor's office to have your blood pressure measured. The doctor would place a cuff around your upper arm roughly at the level of the heart. He would then place his stethoscope over the brachial artery where it runs close to the surface of the skin on the inside of your arm at the elbow and proceed to inflate the cuff.

As the cuff is inflated it tightens around the arm preventing blood from flowing through the brachial artery. The pressure in the cuff, which is indicated by a mercury manometer attached to the cuff, is slowly released and the point at which blood starts flowing through the artery, and which the doctor hears as a "whoosing" sound through his stethoscope, is noted. This is the point at which the pressure in the cuff equals the pressure in the artery as the heart pumps blood through it and is known as the systolic pressure.

The doctor then continues to slowly release the pressure in the cuff and to monitor the sound of blood being pumped through the artery until no sound at all is detected. At this point the manometer indicates the pressure in the artery as the heart is at rest and refilling ready to pump again. This lower pressure is known as the diastolic pressure.

Blood pressure will vary from person to person and will also rise and fall within each of us depending on a variety of factors such as the time of day, our level of activity, whether we are feeling stressed, our general state of health and whether or not we are currently taking particular forms of medication.

For the average person at rest however systolic blood pressure will be around 120 mm Hg (millimeters of mercury) and diastolic blood pressure will be 80 mm Hg. As an indication of the degree of variation between individuals, and within any one person, the normal range of systolic pressure is considered to be 90 – 135 mm Hg and the normal range of diastolic pressure is 50 – 90 mm Hg.

If your blood pressure falls outside these readings, then your doctor will need to investigate further to discover why your blood pressure in either unusually high or unusually low.

Since most of us do not visit the doctor on a regular basis, and only venture into the surgery when we absolutely have to, it can often be many months, or even years, between blood pressure checks and we could well be walking around blissfully unaware that we have a time bomb ticking away inside us.

Today however there is a whole range of very simple to operate and relatively inexpensive blood pressure monitors available for use in our own homes and absolutely no reason at all for not keeping a regular eye on our most valuable organ.

So, before tragedy strikes either you or one of your loved ones, why not take a few minutes to check out the range of blood pressure monitors available and buy yourself some peace of mind

Common Symptoms And Signs Of High Blood Pressure

High Blood pressure is the measure of force against arteries. Do you have high blood pressure? Do you know what are common symptoms and signs of high blood pressure? This article will give you comprehensive information about common signs and symptoms of high blood pressure.

Usually people ignore high blood pressure. Even those who take medicine, only take anti hypertensive medication for short time. Studies have proved that 90% of high blood pressure patients show non compliance with their medication. If you will not control your blood pressure it may lead to serious problems with your Heart, Kidneys, Brain and Eyes. If you want to save these vital organs , then you will have to control your blood pressure with in limits.

Normal blood pressure is 120/80. If this reading goes above 140/90, then you consider yourself as a hypertensive patient. Between 120 and 140 is a pre hypertensive stage. which can be controlled even by natural measures like exercise, low salt intake, stop smoking, lower cholesterol, eat vegetables etc.

How will you come to know that you have high blood pressure?

High blood pressure typically has no symptoms at all, that is why we can call it as Silent killer. Although there are many coincidental symptoms that are widely believed to be associated with high blood pressure. These include headaches, nosebleeds, dizziness, a flushed face and fatigue. Although people with high blood pressure may have many of these symptoms, they occur just as frequently in those with normal blood pressure. Why these symptoms occur, If a person has high blood pressure that is severe or longstanding and left untreated, symptoms such as headache, fatigue, nausea, vomiting, shortness of breath, restlessness, and blurred vision can occur as a result of damage to the brain, eyes, heart and kidneys. In rare cases, high blood pressure may cause brain swelling, which can lead to drowsiness and coma.

Briefly Hypertension has following 10 common symptoms.

headache

Nosebleed (Epistaxis)

Breathlessness

tinnitus(Ringing in Ears)

sleepiness, Ansomnia

confusion

Fatigue

profuse sweating

vomiting

low libido or lack of sexual desire

Blurred vision

If you have not above symptoms, it does not mean that you have no high blood pressure. Remember most common symptom of high Blood pressure is that " It Has No Symptom". Best way to keep you healthy is to have your blood pressure checked at regular intervals.

Wish you all the good health