“Learn how the benefits of aerobic exercise in improving cardiovascular endurance, muscle strength and flexibility help in lowering blood pressure.”

Physical exercise can improve both your mental and physical health. Since aerobic exercise directly relates to lowering blood pressure that is what we will focus on.

The benefits of aerobic exercise include reduced cholesterol and blood pressure, improved muscular endurance, reduced body fat and increased metabolism.

Exercise pumps more blood through your veins. This increases the size of your arteries, prevents fat from clogging your arteries and helps prevent blood clots.

The important idea behind cardio or aerobic exercise today, is to get up and do it if you want to reap the benefits of aerobic exercise.


What is Aerobic Exercise?

Aerobic means "with oxygen." So your aerobic metabolism combines oxygen with carbohydrate or fat to make energy. For oxygen to be used, the activity must be sustained for a prolonged period. If an activity is intermittent in nature it’s not aerobic – it’s anaerobic or sugar burning.

The American College of Sports Medicine (ACSM) defines aerobic exercise as "any activity that uses large muscle groups, can be maintained continuously, and is rhythmic in nature." “Aerobics” or “cardio” as some people prefer to call it is any cardiovascular activity that overloads the heart and lungs and causes them to work harder than at rest.

It involves large muscle groups (namely your legs), and, most important of all - can be sustained continuously for long periods of time (at least 20 - 30 minutes and up to as much as 60 minutes). Activities like walking, jogging, bicycling, stair climbing, rowing, cross-country skiing and elliptical exercise fall into this group.


Types of exercise

Different types of exercise offer different benefits. Aerobic or cardio workouts primarily improve the cardiovascular system (heart and lungs); while weight training or strength training improves muscular strength and flexibility or stretching exercises improve overall mobility and coordination.

Exercises are generally grouped into three types depending on the overall effect they have on the human body:

Aerobic exercises such as cycling, walking and running focus on increasing cardiovascular endurance.

Anaerobic exercises such as weight training, functional training or sprinting increase short-term muscle strength

Flexibility exercises such as stretching improve the range of motion of muscles and joints.


Types of Aerobic Exercise
  • Aerobic Dance
  • Bicycling
  • Cross Country Skiing
  • In-line Skating
  • Fitness Walking
  • Jumping Rope
  • Running
  • Stair Climbing
  • Swimming


Benefits of Aerobic Exercise

Among the recognized benefits of aerobic exercise are:
  • Increased maximal oxygen consumption (VO2max)
  • Improvement in cardiovascular/cardio respiratory function (heart and lungs)
  • Increased blood supply to muscles and ability to use oxygen
  • Lower heart rate and blood pressure at any level of sub-maximal exercise
  • Increased threshold for lactic acid accumulation
  • Lower resting systolic and diastolic blood pressure in people with high blood pressure
  • Increased HDL Cholesterol (the good cholesterol)
  • Decreased blood triglycerides
  • Reduced body fat and improved weight control
  • Improved glucose tolerance and reduced insulin resistance

The known benefits of doing regular aerobic exercise include:
Strengthening the muscles involved in respiration, to facilitate the flow of air in and out of the lungs

Strengthening and enlarging the heart muscle, to improve its pumping efficiency and reduce the resting heart rate

Toning muscles throughout the body, which can improve overall circulation and reduce blood pressure

Increasing the total number of red blood cells in the body, to facilitate transport of oxygen throughout the body
As a result, aerobic exercise can reduce the risk of death due to cardiovascular problems.

In addition to the health benefits of aerobic exercise, there are numerous performance benefits:

Increased storage of energy molecules such as fats and carbohydrates within the muscles, allowing for increased endurance

Increasing speed at which aerobic metabolism is activated within muscles, allowing a greater portion of energy for intense exercise to be generated aerobically

Improving the ability of muscles to use fats during exercise, preserving intramuscular glycogen


Aerobic Capacity

'Aerobic capacity' describes the condition of the cardio respiratory system, (the heart, lungs and blood vessels). Aerobic capacity is defined as the maximum volume of oxygen that can be consumed by one's muscles during exercise. It is a function both of one's cardio respiratory performance and of the ability of the muscles to extract the oxygen and fuel delivered to them.

To measure maximal aerobic capacity, an exercise physiologist or physician will perform a VO2 max test, in which a subject will undergo progressively more strenuous exercise on a treadmill, from an easy walk through to exhaustion. The individual is typically hooked up to a respirometer to measure oxygen, and the speed is increased incrementally over a fixed duration of time.

The higher a cardio respiratory endurance level, the more oxygen transported to exercising muscles, the longer exercise can be maintained without exhaustion and accordingly the faster they are able to run. The higher the aerobic capacity, the higher is the level of aerobic fitness.


Aerobic capacity declines dramatically in older years

Researchers investigated changes in aerobic capacity in healthy people across a broad age group. Using the treadmill results, researchers calculated the change in aerobic capacity for each decade of age. Aerobic capacity declined in each decade in men and women, but at a far greater rate in older age groups.

Beginning in the 40s, men’s decline in aerobic capacity was greater than women’s, regardless of their reported physical activity. To counter age-related declines, they recommend that people maximize their aerobic capacity through exercise.

They also found out that by participating in an exercise program, you can raise your aerobic capacity 15 percent to 25 percent, which would be equivalent to being 10–20 years younger.

Over time, your aerobic capacity will decline, but at any given age someone who exercises will have a higher capacity than someone who is a couch potato.”

Declining muscle strength, another factor that contributes to frailty as people age, can also be countered through strengthening exercises.


Precautions

Before you begin your new exercise program, I highly recommend that you take an exercise stress test by a physician to rule out any potential health risks.

This is a must especially if you have been inactive, smoke, have high cholesterol, or are over age 45. This simple, painless procedure is usually done on a treadmill or stationary bike in your doctor’s office.

While you exercise, several monitors will measure your heart rate, breathing, blood pressure, electrocardiogram (ECG or EKG), and how tired you feel during the test.

The stress test helps a physician find out how well your heart handles work. As your body works harder during the test, it requires more oxygen, so the heart must pump more blood. The test can show if the blood supply is reduced in the arteries that supply the heart.

After the test, your doctor will be able to give you specific guidelines, including the kind and level of exercise appropriate for you.


Some exercise safety tips

If symptoms of dizziness, nausea, excessive shortness of breath, or chest pain are present during any exercise program, you should stop the activity and inform a physician about these symptoms before resuming activity.

As you go and do any aerobic exercise, you must keep some safety tips in mind in order to avoid unnecessary injuries.

  1. Aerobic exercise after a full meal can compromise impairs the delivery of oxygen & nutrients to the muscles defeating your essential purpose of doing aerobic exercise, and that is to improve blood flow.

  2. If you live in an area, like my hot and humid United Arab Emirates where during the summer months the temperature runs up to the mid 40’s Centigrade (>104 F), avoid performing aerobic workouts during the hottest parts of the day.

  3. Do not forget to drink lots of water before you begin your cardio exercise and continue to drink fluids during the workout.

  4. If you are prone to doing jogging in areas near the road or interstate, you may want to consider the rate of pollution and carbon monoxide. Breathing in pollutants can be easily absorbed by the lungs and may trigger some respiratory ailments.

  5. Start the aerobic exercise right by performing warm-ups and stretching exercises in order to condition the muscles. Improper warm up can lead to muscle strains. Proper stretching prevents the possibility of soft tissue injury resulting from tight muscles, tendons, ligaments, and other joint-related structures.

  6. Proper cool down after exercise is important in reducing the occurrence of painful muscle spasms. It is widely known that proper cool down may also decrease frequency and intensity of muscle stiffness the day following any exercise program.

  7. Do not exercise if you are sick, feeling dizzy or just plain tired from a long day at the office. Accidents happen more often under these circumstances. One day off will not hurt you in the long run as long as you stick to your exercise the rest of the time.


Aerobic versus anaerobic exercise

Aerobic exercise and fitness can be contrasted with anaerobic exercise, of which strength training and weight training are the most salient examples. The two types of exercise differ by the duration and intensity of muscular contractions involved, as well as by how energy is generated within the muscle.

Initially during aerobic exercise, glycogen is broken down to produce glucose, but in its absence, fat metabolism is initiated instead. The latter is a slow process, and is accompanied by a decline in performance level. The switch to fat as fuel is a major cause of what marathon runners call "hitting the wall".

Aerobics or cardiovascular exercises are fun and simple methods to reduce your blood pressure.Significant health benefits are obtained by including a moderate amount of physical exercise. Physical activity plays a positive role in preventing disease and improving overall health status.

People of all ages, both male and female, benefit from regular physical activity. Regular aerobic exercise also provides significant psychological benefits and improves quality of life.