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Published on: July 5, 2017
Endurance Training in Middle-Aged Male Physicians
Abstract:
In brief: Vigorous exercise has been associated with reduced cardiovascular risk factors and a lower incidence of coronary heart disease. To determine the effects of endurance training on middle-aged men, a group that is at risk for heart disease, two groups of Physicians were surveyed: 1,269 runners (members of the American Medical Joggers Association who had been running at least 10 miles per week) and 683 nonrunners (members of the AMA). These groups were chosen because they are similar in age, sex, life-style, profession, socioeconomic position, and knowledge about health. Results showed that the runners had lower body weight and reduced cardiovascular risk factors, and that they smoked fewer cigarettes. However, prospective studies are needed to determine both the risks and benefits of endurance exercise.
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01:27Exercise and Muscle Performance
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
01:20Exercise and Cardiovascular Response
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
01:17Exercise and Cardiac Output
Sustained exercise increases the muscles' oxygen demand, which can be...