单选题
Fitness Movement
The fitness movement that began in the late 1960s and early 1970s centered around aerobic exercise. Millions of individuals became engaged in a variety of aerobic activities, and
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thousands of health spas developed around the country to capitalize on his
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interest in fitness, particularly aerobic dancing for females. A number of fitness spas existed
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to this aerobic fitness movement, even a national chain with spas in most major cities. However, their
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was not on aerobics, but rather on weight-training programs designed to develop muscular mass,
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, and endurance in their primarily male
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. These fitness spas did not seem to benefit
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from the aerobic fitness movement to better health, since medical opinion suggested that weight-training programs
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few, if any, health benefits. In recent years, however, weight training has again become increasingly
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for males and for females. Many
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programs focus not only on developing muscular strength and endurance but on aerobic fitness as well.
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, most physical fitness tests have usually included measures of muscular strength and endurance, not for health related reasons, but primarily
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such fitness components have been related to performance in athletics.
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, in recent years, evidence has shown that training programs designed primarily to improve muscular strength and endurance might also offer some health
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as well. The American College of Sports Medicine now
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that weight training be part of a total fitness program for healthy Americans.