effects of exercise
...After two minutes the pulse rate was taken and noted and then ever minute the pulse rate alone was taken until the pulse rate went back to resting rate. See result table below for full listings. RESULT TABLE Minutes Pulse rate Breathing Blood pressure One 108 40 135/70 Two 104 Three 88 Four 100 Five 96 Six 76 Seven 84 Aerobic efficiency and fitness was estimated using the following formula: Duration of exercise 2(sum of 3 pulse counts in recovery) x100 = the results of the subject were as follows: 180 seconds 300 x 100 = 60 The results to check your fitness were as follows below 55 = poor 55-64 = low average 65-79 = average 80-89 = good 90+ = excellent The subjects fitness was low average. The subject walks daily for about one and half hours and smokes Conclusion The aim of this experiment was to find out what happens to the body when a person exercises. At resting position the body is relaxed, the average heart is beating at about 70-90 beats per minute (bpm), the subjects was beating slightly faster due to being anxious. Once you start to exercise things start to change in the body. The brain controls the function involved with exercise. This all takes place in the hypothalamus, which is the size of a large pea. It is called “the brain within the brain” because of its involvement in so many functions. It has sensitive detectors, which monitor body temperature and control chemical (ATP) levels in the blood. When you start to exercise muscles use more energy. The flow of blood to muscles increases, bringing more oxygen and glucose for respiration and getting rid of more carbon dioxide and lactic acid. By two minutes of exercise, the body responds to supply working muscles with oxygen. When oxygen is present, glucose can be completely broken down into carbon dioxide and water in a process called aerobic respiration. The glucose can come from three different places, remaining glycogen supplies in the muscles, breakdown of the liver's glycogen into glucose, which gets to working muscle through the bloodstream and absorption of glucose from food in the intestine, which gets to working muscle through the bloodstream. Respiration becomes greater as more breaths are needed to increase the flow of oxygen to the lung. Before the extra oxygen taken in takes effect, energy is taken from the muscles. It does this by cells splitting glycogen into glucose. The cell uses anaerobic metabolism to make ATP and a by -product, lactic acid from the glucose. Anaerobic respiration can only take place for a short time as lactic acid builds up in the muscles which can cause the ache you sometimes feel at the first minutes of exercise. As the muscles begin to work, messages are sent from the brain to the body to ensure that the working muscles receive more oxygen. This happens by reducing the blood flow from the non- essential organs. The heart works faster during exercise, as it needs to beat faster to pump more oxygenated blood out. In order for more oxygen, the lungs also need to work faster by increasing their intake of oxygen, to make sure that the working muscles receive enough oxygen. The body heats up during exer...