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Staying Active in Old Age Keeps People MobilePeople over 70 who aren"t active are more likely to develop problems walking or climbing stairs within a few years, according to a new study.These findings suggest that it"s very important to stay 1 in old age, study author Dr. Marjolein Visser told Reuters Health."Physical activity in old age is as important 2 taking your medications(药物)," Visser noted. "You do not need to join an expensive, fancy sports club with high-tech (高科技的 ) equipment. Your body will already 3 from regular walking."Visser explained that 4 active helps prevent people from becoming breathless during simple activities, increase muscle mass and strength, and maintain the balance People need to walk up stairs, for instance.To investigate how important exercise is to older adults, Visser"s team interviewed 3,075 men and 5 between the ages of 70 and 79, all of whom said they had no problems walking one-quarter of a mile or climbing 6 . The investigators followed the subjects for 4-1/2 years, noting who developed problems 7 and climbing stairs.During the study,34 percent of men and 47 8 of women said they began to struggle with walking and climbing stairs. People 9 were inactive were twice as likely to report these problems as people who said they got regular exercise.People who didn"t exercise but had active lifestyles appeared to be at a somewhat higher risk of developing 10 walking and climbing stairs, relative to people who exercised 11 . Still, leading an active lifestyle appeared to protect people 12 problems better than being generally inactive, the researchers report in the Journal of the American Geriatrics (老年医学的) Society.Among people who were generally inactive, 13 who walked even a little bit—such as brisk (轻快的) walking for a little over an hour per week—were at a lower 14 of mobility (可动性) problems."If you do not like to exercise or you cannot exercise 15 of serious health problems or functional limitations, do try to be as active as possible," Visser advised.
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Staying Active in Old Age Keeps People MobilePeople over 70 who aren"t active are more likely to develop problems walking or climbing stairs within a few years, according to a new study.These findings suggest that it"s very important to stay 1 in old age, study author Dr. Marjolein Visser told Reuters Health."Physical activity in old age is as important 2 taking your medications(药物)," Visser noted. "You do not need to join an expensive, fancy sports club with high-tech (高科技的 ) equipment. Your body will already 3 from regular walking."Visser explained that 4 active helps prevent people from becoming breathless during simple activities, increase muscle mass and strength, and maintain the balance People need to walk up stairs, for instance.To investigate how important exercise is to older adults, Visser"s team interviewed 3,075 men and 5 between the ages of 70 and 79, all of whom said they had no problems walking one-quarter of a mile or climbing 6 . The investigators followed the subjects for 4-1/2 years, noting who developed problems 7 and climbing stairs.During the study,34 percent of men and 47 8 of women said they began to struggle with walking and climbing stairs. People 9 were inactive were twice as likely to report these problems as people who said they got regular exercise.People who didn"t exercise but had active lifestyles appeared to be at a somewhat higher risk of developing 10 walking and climbing stairs, relative to people who exercised 11 . Still, leading an active lifestyle appeared to protect people 12 problems better than being generally inactive, the researchers report in the Journal of the American Geriatrics (老年医学的) Society.Among people who were generally inactive, 13 who walked even a little bit—such as brisk (轻快的) walking for a little over an hour per week—were at a lower 14 of mobility (可动性) problems."If you do not like to exercise or you cannot exercise 15 of serious health problems or functional limitations, do try to be as active as possible," Visser advised.
Staying Active in Old Age Keeps People MobilePeople over 70 who aren"t active are more likely to develop problems walking or climbing stairs within a few years, according to a new study.These findings suggest that it"s very important to stay 1 in old age, study author Dr. Marjolein Visser told Reuters Health."Physical activity in old age is as important 2 taking your medications(药物)," Visser noted. "You do not need to join an expensive, fancy sports club with high-tech (高科技的 ) equipment. Your body will already 3 from regular walking."Visser explained that 4 active helps prevent people from becoming breathless during simple activities, increase muscle mass and strength, and maintain the balance People need to walk up stairs, for instance.To investigate how important exercise is to older adults, Visser"s team interviewed 3,075 men and 5 between the ages of 70 and 79, all of whom said they had no problems walking one-quarter of a mile or climbing 6 . The investigators followed the subjects for 4-1/2 years, noting who developed problems 7 and climbing stairs.During the study,34 percent of men and 47 8 of women said they began to struggle with walking and climbing stairs. People 9 were inactive were twice as likely to report these problems as people who said they got regular exercise.People who didn"t exercise but had active lifestyles appeared to be at a somewhat higher risk of developing 10 walking and climbing stairs, relative to people who exercised 11 . Still, leading an active lifestyle appeared to protect people 12 problems better than being generally inactive, the researchers report in the Journal of the American Geriatrics (老年医学的) Society.Among people who were generally inactive, 13 who walked even a little bit—such as brisk (轻快的) walking for a little over an hour per week—were at a lower 14 of mobility (可动性) problems."If you do not like to exercise or you cannot exercise 15 of serious health problems or functional limitations, do try to be as active as possible," Visser advised.
Staying Active in Old Age Keeps People MobilePeople over 70 who aren"t active are more likely to develop problems walking or climbing stairs within a few years, according to a new study.These findings suggest that it"s very important to stay 1 in old age, study author Dr. Marjolein Visser told Reuters Health."Physical activity in old age is as important 2 taking your medications(药物)," Visser noted. "You do not need to join an expensive, fancy sports club with high-tech (高科技的 ) equipment. Your body will already 3 from regular walking."Visser explained that 4 active helps prevent people from becoming breathless during simple activities, increase muscle mass and strength, and maintain the balance People need to walk up stairs, for instance.To investigate how important exercise is to older adults, Visser"s team interviewed 3,075 men and 5 between the ages of 70 and 79, all of whom said they had no problems walking one-quarter of a mile or climbing 6 . The investigators followed the subjects for 4-1/2 years, noting who developed problems 7 and climbing stairs.During the study,34 percent of men and 47 8 of women said they began to struggle with walking and climbing stairs. People 9 were inactive were twice as likely to report these problems as people who said they got regular exercise.People who didn"t exercise but had active lifestyles appeared to be at a somewhat higher risk of developing 10 walking and climbing stairs, relative to people who exercised 11 . Still, leading an active lifestyle appeared to protect people 12 problems better than being generally inactive, the researchers report in the Journal of the American Geriatrics (老年医学的) Society.Among people who were generally inactive, 13 who walked even a little bit—such as brisk (轻快的) walking for a little over an hour per week—were at a lower 14 of mobility (可动性) problems."If you do not like to exercise or you cannot exercise 15 of serious health problems or functional limitations, do try to be as active as possible," Visser advised.
Modern scientists divide the process of dying into two phases—clinical or temporary death and biological death. Clinical death occurs when the vital organs, such as the heart or lungs, have ceased to function, but have not suffered permanent damage. The organism can still be revived (复活). Biological death occurs when changes in the organism lead to the "breaking up" of vital cells and tissues. Death is then unchangeable and final.Scientists have been seeking a way to prolong the period of clinical death so that the organism can remain alive before biological death occurs. The best method developed so far involves cooling of the organism, combined with narcotic(麻醉的) sleep. By slowing down the body"s metabolism (新陈代谢),cooling delays the processes leading to biological death.To illustrate how this works, scientists performed an experiment on a six-year-old female monkey called Keta. The scientist put Keta to sleep with a narcotic. Then they surrounded her body with ice bags and began checking her body temperature. When it had dropped to 28 degrees the scientists began draining blood from an artery (动脉). The monkey"s blood pressure decreased and an hour later both the heart and respiration stopped: clinical death set in. For twenty minutes Keta remained in this state. Her temperature dropped to 22 degrees. At this point the scientists pumped blood into an artery in the direction of the heart and started artificial respiration. After two minutes Keta"s heart became active once more. After fifteen minutes, spontaneous (自然产生的) respiration began, and after four hours Keta opened her eyes and lifted her head. After six hours, when the scientists tried to give her a penicillin injection, Keta seized the syringe (注射器) and ran with it around the room. Her behavior differed little from that of a healthy animal. What happened to the monkey when she was restored to the original state again
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