Staying physically active and exercising regularly can help prevent or delay many diseases and disabilities (a) exercise can make Cardiorespiratory system more efficient. Regular exercise makes the heart stronger and the lungs fitter, enabling the cardiovascular system to deliver more oxygen to the body with every heartbeat and the pulmonary system to increase the maximum amount of oxygen that the lungs can take in. Exercise lowers blood pressure, decreases the levels of total and low density lipoprotein (LDL) cholesterol (the bad cholesterol), and increases the level of high density lipoprotein (HDL) cholesterol (the good cholesterol) These beneficial effects in turn decrease the risk of heart attack, stroke, and coronary artery disease. (B) there is a general decline muscle in skeletal muscle strength and bulk in old age which relates to a reduction in both size and number of muscle fiber. Exercise can significantly increase Muscle strength and as well as the fast twitch fiber, which improve the speed of response and quality of muscle activity, and help prevent injuries and falls.
When a person exercises the blood flows faster and releases endorphins which causes the feeling of happiness and keeps stress under control (Ballantyne). Exercising can boost ones self-esteem which leads to a healthy mental state. The Department of Health and Human Services (HHS) late this year released its new Physical Activity Guidelines for Americans, calling for adults between the ages of 18 and 64 to exercise moderately (such as brisk walking or water aerobics) for at least two hours and 30 minutes weekly (Ballantyne). This is a simple way to exercise and help improve one’s health. Exercising also puts the body in excellent physical shape.
Joints may be improved by exercise as they respond to mechanical stresses. Anything which puts stress on the bones causes it to get thicker and increases in weight because of the stress and are therefore able to take more stress and pain. Impact exercise promotes bone growth and strengthens our bones and joints. If we subject our bones to weight bearing activities or we exert stress on our muscles, things we don't normally do, our bones will adjust to be able to cope with the weight and stress. As the weight increases, our bone adjust even more to sustain the greater weight and they adjust by getting bigger and stronger.
This decrease in muscle breakdown and lower recovery time permits more frequent training sessions at higher intensity and for longer periods of time. Another benefit is the increased aggressiveness they are believed to simulate, also noted as enhanced athletic performance. This increased aggressiveness may drive athletes to train harder and longer without the usual fatigue (Entine, 2000). Other positive effects of using steroids are increases in; storage of muscle glycogen, blood volume, a general increase of the immune system, and the reduction of body fat percentage. The effects are maintained as long as the athlete continues the steroid
It is calculated by stroke volume x heart rate. Both the stroke volume and cardiac output will determine how much blood is pumped around the body therefore determining how much oxygen will reach the working muscles. The more blood pumped out of the heart the more work an individual can do. This will enhance performance in a 400m race because the individual’s heart will pump more blood around the body and deliver more oxygen to the working muscles allowing more work to be done. Increase in Respiratory rate and Tidal volume Tidal volume is the amount of air breathed in and out with each breath and respiratory rate is the rate at much a person
A common cause of cardiac hypertrophy is high blood pressure (hypertension) and heart valve stenosis. Prolonged aerobic exercise training may also increase stroke volume, which frequently results in a lower (resting) heart rate. Reduced heart rate prolongs ventricular diastole (filling), increasing end-diastolic volume, and ultimately allowing more blood to be ejected. Vital capacity is especially important during intense physical activity such as exercise, sport, rigorous work or running away from a dangerous situation. Such demands require more air and oxygen in the lungs to fuel body organs, especially those of the musculoskeletal, cardiovascular,
Unit 2: The Physiology of Fitness Assignment: No 1 Task 1.a Task1b Musculoskeletal response Increased blood supply The short term effects of exercise on your muscles include an increase in temperature and metabolic activity. Result: - greater demand for oxygen in blood supply through capillary dilation. Increase in muscle pliability When you warm up your muscles during activity makes them more pliable and reduces the risk of injury. Increased range of movement The short-term effect of exercise are demonstrated by changes within the joint. Movement of joints stimulates the secretion of synovial fluid.
Anabolic steroids increase muscle growth and build and the other; corticosteroids which repairs muscle. Anabolic steroids are the type of steroids that athletes use to improve their performance level. Corticosteroids are the steroids athletes will use to speed up recovery time to make it in time for an upcoming event. Steroids also have their benefits for the viewers of sport, the actual perfromances would be of a higher quality. A huge part of watching sports is witnessing the very peak of human athletic ability, and legalizing performance enhancing drugs would help athletes climb even higher.
| Muscular Strength | The amount of force your muscles can exert against resistance. | Start light and work way up to heavier weight lifting. | Not only to aid in weight loss but also builds muscle to help protect bones. Reduces diabetes risk and increases metabolism. | Muscular Endurance | The ability to continue to use muscular strength.
It is taken as an injection, pill or topical treatments. Anabolic steroids are popular because their use helps athletes to recover quicker from hard workouts or allows them to workout more frequently without overtraining. This is a more popular choice for a more serious and intense athlete. It reduces muscle damage, but builds muscle at the same time. Sometimes athletes experience an agressiveness as a side effect and the athletes tend to like the agressive