كهنسالاني كه هفته اي دو بار تمرين ورزشي قدرتي انجام مي دهند كمتر در معرض خطر مرگ هستند.
از گذشته منافع ورزش و تغذيه مناسب در افزايش سلامت و ماهش بيماري قلبي روشن بوده است اما اهميت مورزس هاي قدرتي تا اين اندازه بررسي نشده بود.
اين ورزش ها خطر مرگ به هر دليل را تا نزديك ٥٠درصد و خطر مرگ از سرطان را تا نزديك بيست درصد كاهش مي دهند
جزييات اين تحقيق در مجله طب پيشگيري چاپ شده است
The NHIS collects overall health, disease and disability data of the U.S. population from a nationally representative sampling of all 50 states and the District of Columbia. The 1997-2001 survey included more than 30,000 adults age 65 and older.
During the survey period, more than 9 percent of older adults reported strength training at least twice a week.
“That’s only a small fraction of the population, but it’s actually higher than we had anticipated,” Kraschnewski said.
The researchers followed the respondents for 15 years through death certificate data from the National Center for Health Statistics National Death Index. About a third of respondents had died by 2011.
Older adults who strength trained at least twice a week had 46 percent lower odds of death for any reason than those who did not. They also had 41 percent lower odds of cardiac death and 19 percent lower odds of dying from cancer.
Older adults who met strength training guidelines were, on average, slightly younger, and were more likely to be married white males with higher levels of education. They were also more likely to have normal body weight, to engage in aerobic exercise and to abstain from alcohol and tobacco.
When the researchers adjusted for demographic variables, health behaviors and health conditions, a statistically significant effect on mortality remained. Although the effects on cardiac and cancer mortality were no longer statistically significant, the data still pointed to a benefit.
Importantly, after the researchers controlled for physical activity level, people who reported strength exercises appeared to see a greater mortality benefit than those who reported physical activity alone.
The study is strong evidence that strength training in older adults is beneficial beyond improving muscle strength and physical function, the researchers said.
“We need to identify more ways that we can help get people engaged in strength training so we can increase the number from just under 10 percent to a much higher percentage of our older adults who are engaged in these activities,” Kraschnewski said.