As the years go by, muscle mass within the body often shrinks, and strength and power decline. The process starts before you think that. Sarcopenia – defined as age-related muscle loss – can start around age 35 and occurs at a rate of 1-2 percent a yr for the typical person. After age 60, it may speed up to three percent a yr. The damage could also be mild, moderate, or severe—or the muscles may remain inside normal range.
But on average, adults who don't do regular strength training can expect to lose 4 to six kilos of muscle per decade. (And most individuals aren't seeing the numbers on the dimensions go down, which implies they're replacing that muscle with fat.) Fast-twitch fibers, which offer burst power, are wasted at the next rate than slow-twitch fibers, which implies you are not only getting weaker, but additionally slower.
Weak muscles speed up the lack of independence, limiting activities of day by day living beyond accessibility activities similar to walking, cleansing, shopping, and even dressing. They hinder your ability to address and recuperate from an illness or injury. Older individuals with moderate to severe sarcopenia have 1.5 to 4.6 times more disability than individuals with normal muscle mass. Weak muscles make it difficult to balance properly when moving and even standing still—and a scarcity of strength exacerbates the issue.
Perhaps not surprisingly, one in three adults age 65 and older falls annually. Some of those falls can have serious consequences, including broken bones, admission to long-term care facilities, and even death from complications. According to the CDC, the outbreak causes greater than 800,000 hospitalizations a yr. But strength and power training might help. People with strong muscles are less more likely to fall and, after they do fall, less more likely to be seriously injured.
Loss of muscle strength and mass will not be the one aspects that contribute to age-related declines in function and mobility. Mitochondria – the energy-producing “power plants” inside cells – decrease in number and efficiency. Similarly, the neural signaling system that recruits muscle fibers to tasks deteriorates with age and disuse.
While it's tempting to attribute all of those changes to aging alone, overuse of muscles plays an even bigger role than many individuals suspect. Studies show that strength and power training might help reverse these effects and restore muscle function.
Image: © Andresser/Getty Images