What Do These Findings Imply for Activities of Low Absolute but High Relative (Perceived) Intensity?
These 7 studies examined the risks of activities requiring 6 or more METs (in one case, 5 or more METs). Individuals, however, vary in their capacity to perform activities with high energy requirements. In general, capacity is lower for females than males, declines with age, appears to be influenced by genetics, and is modulated by routine physical activity practices. Activities requiring about 6 METs of energy expenditure generally cannot be done by persons 80 years and older, are perceived as hard to very hard for middle aged and older adults, and as moderately intense for young adults (Table G10.4) (80).
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