This allows your heart to pump blood around your body more efficiently. Your heart changes shape:Ĭhanges in your heart include an increase in size/volume of your left atrium. While the uptake of oxygen is the term people would mostly associate with the cardiovascular system it is, in fact, the removal of carbon dioxide that is probably more important. Oxygen Utilization = efficient use of O2 by muscles Oxygen UptakeĪn increase in Cardiac Output and/or and improvement in Oxygen Utilization will result in improved Oxygen Uptake and improved performance. Oxygen Uptake = cardiovascular performanceĬardiac Output = the hearts efficiency/performance Endurance training improves our bodies’ ability to get oxygen from our lungs, through our cardiovascular systems and into our muscles. Without oxygen, the body is very inefficient at creating energy over long periods. When we exercise we use oxygen to make energy more efficiently. You use oxygen to make more efficient energy: Overview of sports with the highest O2 demand: Another note: road running does not course arthritis you would need to be training at super marathon distances to cause any degenerative changes. Older people with less muscle mass won’t have the same load on muscles and joints. These injuries are typically to tendons and muscles. Due to the high frequency of training younger people with more muscle mass are more susceptible to injury. Typically this kind of training consists of shorter distances during the week and one long distance at the weekend. If you are training for a marathon taking even 3 days off without running will set you back in your training. Frequency is far more important in endurance training.
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