Smoking

"Lung cancer" has long been ranked number one cause of cancer death. Data indicate that 90% of men and 37% of women in the cause of death of lung cancer related to smoking.
Sports world smoking is common, the media's propaganda seems to no effect on them, possibly for two reasons: 1. Movement of the exercise that they can become better physical function, enough to confront this little tobacco. 2. They think that some elements of cigarettes a bracing effect, but smoking can enhance sports performance. The truth is really the case that in the end, or just an illusion?
Cigarettes have any effect on you
After lighting a cigarette smoke generated, containing more than four thousand seven hundred kinds chemical substances, the more important of which are both harmful substances:
1. Nicotine (Nicotine): cigarettes, the main psychoactive substance, has a dual role in the human body, when inhaled less excited nervous system, over time then it has a dampening effect, and the addiction will cause mental and physical dependence. Epidemiological studies have found that nicotine can cause the body superoxide ions (super-oxide), and between the quality of white blood cells (interleukin-l beta) production, will be subject to certain immune system damage. On the other hand, nicotine platelets (platelet) aggregation has accelerated, would inhibit the activation of hemolytic factors, coupled with the contraction of coronary arteries, it is likely to cause blood clots blocking blood vessels, causing myocardial infarction.2. Carbon monoxide: cigarette smoke components in a part of the binding with hemoglobin is the oxygen of the two times. When carbon monoxide enters the body, will give priority to and the heme binding such that the ratio of oxygenated hemoglobin decreased, while the phenomenon of the formation of hypoxia. Generally normal levels of carbon monoxide in blood is about 1%, while the smokers are up to 15%, over time, reduce the number of hemoglobin carries oxygen, the result will cause abnormal lesions occur in physical conditioning.
The impact of tobacco on sport performance
McMurray in 1985, has done a study, he found the two groups were not smoking habits and smoking habits, to test their maximal oxygen uptake (the best assessment of cardiorespiratory endurance index) was found smoking group of maximal oxygen uptake significantly less than the group of non-smoking habits. In the same study, McMurray and test them at the same intensity of exercise duration and found that smoking habits of group exercise duration than the non-smoking group to the less. It can be seen, long-term decline in smoking will cause heart and lung endurance, physical decline. In addition, Bolinder in 1997 found that the habit of smoking, heart rate at rest and exercise heart rate and systolic blood pressure, smoking habits are not the people than to high, this situation of smoking the heart of those concerned, all the time without smoking habits than those who have the heart to do more work, over time will result in no small burden on the heart.
Overall, smoking caused decreased cardiorespiratory endurance, it may be because smokers than non-smoking habits, body has higher concentrations of carbon monoxide hemoglobin. Since carbon monoxide combines with hemoglobin oxygen affinity is two hundred times, so when carbon monoxide enters the body, will first take up hemoglobin, the blood concentration of carbon monoxide hemoglobin, blood oxygen-carrying capacity will be relatively less affected by activities when aerobic capacity, and cause a decline in maximal oxygen uptake.
Nicotine, due to its long-term human cardiovascular system and immune system damage, resulting in deterioration of the human body function, it may result in maximal oxygen uptake and exercise duration decreased the main factors. Furthermore, nicotine has a stimulating effect of the sympathetic nerve, you might think, then for the movement of athletes in short, is there a positive effect? The movement of nicotine on the performance of anaerobic exercise is helpful in this language is still not off the next concubine. Assume that it does improve the movement of anaerobic exercise performance, but compared to the nicotine in cardiovascular damage, maybe even lead to the risk of cancer of view, to sacrifice their own athletic performance worth it? I think the answer must be negative.