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Most weight regained by older ladies is fat
How this affects strength & health needs further study, but specialists said the findings underscore the downside of so-called yo-yo dieting.
Some weight regain is common after weight loss, but in older females lots of of those regained pounds return as fat mass than muscle mass, according to a new study.
"A third of the weight lost was muscle," said Dr. Barbara Nicklas, a gerontologist at the J. Paul Sticht Middle on Aging & Rehabilitation at Wake Forest Baptist Medical Middle in Winston-Salem, N.C.
The study included 78 females, average age 58, who had lost about 25 pounds in the work of a earlier diet study. Taking a look at information on the regainers, the researchers found a modify in body composition.
The researchers evaluated the women's body weight, lean mass & fat mass before the diet, right after weight loss, & six & 12 months later. At year, the researchers zeroed in on 68 females for whom complete records were available. Fifty-two (76 percent) had regained some weight, including 11 who weighed over at the study's start. Sixteen were still losing weight.
"The proportion of weight they gained 1/8back3/8 as muscle was twenty percent." That left them with more fat & less muscle.
The study was published Dec. 13 in the American Journal of Clinical Nutrition.
The females in the study were sedentary, & their average body mass index (BMI) at the beginning was 33. BMI is a calculation based on height & weight, as well as a BMI of 30 is thought about fat.
"Some research shows (more youthful people) regain their weight in the same muscle-fat proportion they lost (it)," they said.
The finding may not apply to females who are less fat, Nicklas said. They suspects the results would also apply to older men, but perhaps not to more youthful men or females.
The study of regain after weight loss is a comparatively new area, said Dr. Alice Lichtenstein, a professor of nutrition science at Tufts University, Boston, who is familiar with the study.
There is a possibility, Nicklas said, that a higher proportion of fat with the regained weight may basically reflect normal aging.
"There was a variety of variability in both weight loss & regain among the postmenopausal females studied," they said. The shift in body composition toward more fat than muscle didn't occur in all females, they said.
Even so, they said the clear message is to try to keep away from becoming fat to start with, & to keep off the excess weight one time you lose it.
"For those females who have gained excess body weight & are then successful in losing it, this finding may add a bit more impetus to maintain the weight loss," Lichtenstein said.
But the study should not deter fat individuals from trying to slim down, they said.
U.S. dietary guidelines recommend 0.8 grams of protein (or more) for every two.2 pounds of body weight. For example, a woman who weighs 200 pounds ought to take in about 70 to 90 grams of protein, Nicklas said. A five.3-ounce container of Greek yogurt has about 13 grams or more of protein, they noted.
Protein consumption is important to help minimize the amount of muscle loss, Nicklas said.
Exercise as well as a balanced diet can help maintain weight loss, Nicklas advised.
Some weight regain is common after weight loss, but in older females lots of of those regained pounds return as fat mass than muscle mass, according to a new study.
"A third of the weight lost was muscle," said Dr. Barbara Nicklas, a gerontologist at the J. Paul Sticht Middle on Aging & Rehabilitation at Wake Forest Baptist Medical Middle in Winston-Salem, N.C.
The study included 78 females, average age 58, who had lost about 25 pounds in the work of a earlier diet study. Taking a look at information on the regainers, the researchers found a modify in body composition.
The researchers evaluated the women's body weight, lean mass & fat mass before the diet, right after weight loss, & six & 12 months later. At year, the researchers zeroed in on 68 females for whom complete records were available. Fifty-two (76 percent) had regained some weight, including 11 who weighed over at the study's start. Sixteen were still losing weight.
"The proportion of weight they gained 1/8back3/8 as muscle was twenty percent." That left them with more fat & less muscle.
The study was published Dec. 13 in the American Journal of Clinical Nutrition.
The females in the study were sedentary, & their average body mass index (BMI) at the beginning was 33. BMI is a calculation based on height & weight, as well as a BMI of 30 is thought about fat.
"Some research shows (more youthful people) regain their weight in the same muscle-fat proportion they lost (it)," they said.
The finding may not apply to females who are less fat, Nicklas said. They suspects the results would also apply to older men, but perhaps not to more youthful men or females.
The study of regain after weight loss is a comparatively new area, said Dr. Alice Lichtenstein, a professor of nutrition science at Tufts University, Boston, who is familiar with the study.
There is a possibility, Nicklas said, that a higher proportion of fat with the regained weight may basically reflect normal aging.
"There was a variety of variability in both weight loss & regain among the postmenopausal females studied," they said. The shift in body composition toward more fat than muscle didn't occur in all females, they said.
Even so, they said the clear message is to try to keep away from becoming fat to start with, & to keep off the excess weight one time you lose it.
"For those females who have gained excess body weight & are then successful in losing it, this finding may add a bit more impetus to maintain the weight loss," Lichtenstein said.
But the study should not deter fat individuals from trying to slim down, they said.
U.S. dietary guidelines recommend 0.8 grams of protein (or more) for every two.2 pounds of body weight. For example, a woman who weighs 200 pounds ought to take in about 70 to 90 grams of protein, Nicklas said. A five.3-ounce container of Greek yogurt has about 13 grams or more of protein, they noted.
Protein consumption is important to help minimize the amount of muscle loss, Nicklas said.
Exercise as well as a balanced diet can help maintain weight loss, Nicklas advised.
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