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Low-carb diet speeds initial weight loss: study
Low-carb diet speeds initial weight loss: study
Fri Mar 23, 2:04 PM ET NEW YORK (Reuters Health) - In a study of overweight and obese people, those who went on a low carbohydrate diet lost more weight -- and more fat -- than their peers who went on a low-fat, portion-controlled diet. After 12 weeks on the low-carb plan, study participants had lost an average of 4.9 kilograms (10.8 pounds), compared to 2.5 kg (5.5 pounds) for their peers on the low-fat diet. However, after the weight-maintenance phase of the study, which lasted another 24 weeks, differences between the two groups in weight loss and fat mass remained, but were no longer statistically significant. The findings confirm that the low-carb diet tested in the study is a "reasonable alternative" to cutting fat and controlling portions in order to maintain a healthy weight, Dr. Kevin C. Maki of Radiant Research in Chicago and colleagues conclude. The approach Maki's team tested -- a reduced-glycemic-load (RGL) diet -- required people to restrict their carbohydrate intake and eat more low glycemic index (GI) foods, meaning foods that produce a relatively small, gradual increase in blood sugar levels. Low GI foods generally are rich in fiber, consist of more complex carbohydrates, and include vegetables, beans and whole grains. Study participants on the RGL diet did not eat certain high-carb foods, such as fruits and starches, for the first two weeks, and also abstained from alcohol, after which they introduced low-GI foods and were allowed to drink moderate amounts of alcohol. But they were allowed to eat as much of the permitted foods as they wanted. Those on the low-fat diet were instructed to reduce their energy intake 500 to 800 calories per day by eliminating high-fat foods and controlling portion sizes. After 12 weeks, study participants in either group could continue on the weight loss diet or switch to a weight maintenance plan. At 12 weeks, the low-carb group had lost significantly more weight, and also more fat -- 1.9 kg (4.2 pounds) of fat vs. 0.9 kg (2 pounds) for the low-fat diet group. By 36 weeks, the low-carb group had kept off 4.5 kg (10 pounds), compared to 2.6 kg (5.7 pounds) for the low-fat group, not a huge difference. Low-carb diet participants had maintained a 2 kg (4.4 pounds) loss of fat weight, compared to 1.3 kg (2.9 pounds) for the low fat group, which again was not a significant difference. The researchers say more research is needed to clarify the mechanisms responsible for the greater initial losses of body weight and fat associated with the RGL diet, to evaluate the persistence of these losses over longer treatment periods, and to obtain greater insight into strategies that would improve long-term weight-loss maintenance." SOURCE: American Journal of Clinical Nutrition, March 2007. |
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Another 10 Pounder Study -- Low-carb diet speeds initial weight
I wonder what might be a proper design for a study to show what works
well for major obesity reduction and maintainence of that weight loss. These little piddly 10 pound average weight reduction studies that have cropped up in the last few years clearly aren't oriented to solving the obesity problem. They may be fine for a little "trim up", but if they continue in the same vein, it won't make any movement to cracking the "Obesity Problem". I can imagine that the proposals to get the research dollars bang about the severity of the "Obesity Epidemic" and then deliver a small 10 pound bag of average eliminated fat. 10 pounds of fat isn't a cure for obesity. Can we have "truth in proposal writing" laws written? Jim Jake Martin wrote: Low-carb diet speeds initial weight loss: study Fri Mar 23, 2:04 PM ET NEW YORK (Reuters Health) - In a study of overweight and obese people, those who went on a low carbohydrate diet lost more weight -- and more fat -- than their peers who went on a low-fat, portion-controlled diet. After 12 weeks on the low-carb plan, study participants had lost an average of 4.9 kilograms (10.8 pounds), compared to 2.5 kg (5.5 pounds) for their peers on the low-fat diet. However, after the weight-maintenance phase of the study, which lasted another 24 weeks, differences between the two groups in weight loss and fat mass remained, but were no longer statistically significant. The findings confirm that the low-carb diet tested in the study is a "reasonable alternative" to cutting fat and controlling portions in order to maintain a healthy weight, Dr. Kevin C. Maki of Radiant Research in Chicago and colleagues conclude. The approach Maki's team tested -- a reduced-glycemic-load (RGL) diet -- required people to restrict their carbohydrate intake and eat more low glycemic index (GI) foods, meaning foods that produce a relatively small, gradual increase in blood sugar levels. Low GI foods generally are rich in fiber, consist of more complex carbohydrates, and include vegetables, beans and whole grains. Study participants on the RGL diet did not eat certain high-carb foods, such as fruits and starches, for the first two weeks, and also abstained from alcohol, after which they introduced low-GI foods and were allowed to drink moderate amounts of alcohol. But they were allowed to eat as much of the permitted foods as they wanted. Those on the low-fat diet were instructed to reduce their energy intake 500 to 800 calories per day by eliminating high-fat foods and controlling portion sizes. After 12 weeks, study participants in either group could continue on the weight loss diet or switch to a weight maintenance plan. At 12 weeks, the low-carb group had lost significantly more weight, and also more fat -- 1.9 kg (4.2 pounds) of fat vs. 0.9 kg (2 pounds) for the low-fat diet group. By 36 weeks, the low-carb group had kept off 4.5 kg (10 pounds), compared to 2.6 kg (5.7 pounds) for the low-fat group, not a huge difference. Low-carb diet participants had maintained a 2 kg (4.4 pounds) loss of fat weight, compared to 1.3 kg (2.9 pounds) for the low fat group, which again was not a significant difference. The researchers say more research is needed to clarify the mechanisms responsible for the greater initial losses of body weight and fat associated with the RGL diet, to evaluate the persistence of these losses over longer treatment periods, and to obtain greater insight into strategies that would improve long-term weight-loss maintenance." SOURCE: American Journal of Clinical Nutrition, March 2007. |
#3
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Low-carb diet speeds initial weight loss: study
Hi friend ,
GLOBAL JOBS ONLINE Join this our bogs there is solution for jobs seeker http://globaljobsonline.blogspot.com Post your valuable comments; so you can get experts advice & tips Best regards, Source4you Team On Mar 23, 5:34 pm, "Jake Martin" wrote: Low-carb diet speeds initial weight loss: study Fri Mar 23, 2:04 PM ET NEW YORK (Reuters Health) - In a study of overweight and obese people, those who went on a low carbohydrate diet lost more weight -- and more fat -- than their peers who went on a low-fat, portion-controlled diet. After 12 weeks on the low-carb plan, study participants had lost an average of 4.9 kilograms (10.8 pounds), compared to 2.5 kg (5.5 pounds) for their peers on the low-fat diet. However, after the weight-maintenance phase of the study, which lasted another 24 weeks, differences between the two groups in weight loss and fat mass remained, but were no longer statistically significant. The findings confirm that the low-carb diet tested in the study is a "reasonable alternative" to cutting fat and controlling portions in order to maintain a healthy weight, Dr. Kevin C. Maki of Radiant Research in Chicago and colleagues conclude. The approach Maki's team tested -- a reduced-glycemic-load (RGL) diet -- required people to restrict their carbohydrate intake and eat more low glycemic index (GI) foods, meaning foods that produce a relatively small, gradual increase in blood sugar levels. Low GI foods generally are rich in fiber, consist of more complex carbohydrates, and include vegetables, beans and whole grains. Study participants on the RGL diet did not eat certain high-carb foods, such as fruits and starches, for the first two weeks, and also abstained from alcohol, after which they introduced low-GI foods and were allowed to drink moderate amounts of alcohol. But they were allowed to eat as much of the permitted foods as they wanted. Those on the low-fat diet were instructed to reduce their energy intake 500 to 800 calories per day by eliminating high-fat foods and controlling portion sizes. After 12 weeks, study participants in either group could continue on the weight loss diet or switch to a weight maintenance plan. At 12 weeks, the low-carb group had lost significantly more weight, and also more fat -- 1.9 kg (4.2 pounds) of fat vs. 0.9 kg (2 pounds) for the low-fat diet group. By 36 weeks, the low-carb group had kept off 4.5 kg (10 pounds), compared to 2.6 kg (5.7 pounds) for the low-fat group, not a huge difference. Low-carb diet participants had maintained a 2 kg (4.4 pounds) loss of fat weight, compared to 1.3 kg (2.9 pounds) for the low fat group, which again was not a significant difference. The researchers say more research is needed to clarify the mechanisms responsible for the greater initial losses of body weight and fat associated with the RGL diet, to evaluate the persistence of these losses over longer treatment periods, and to obtain greater insight into strategies that would improve long-term weight-loss maintenance." SOURCE: American Journal of Clinical Nutrition, March 2007. |
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Another 10 Pounder Study -- Low-carb diet speeds initial weight loss: study
Hi friend ,
GLOBAL JOBS ONLINE Join this our bogs there is solution for jobs seeker http://globaljobsonline.blogspot.com Post your valuable comments; so you can get experts advice & tips Best regards, Source4you Team On Mar 23, 6:46 pm, Jbuch wrote: I wonder what might be a proper design for a study to show what works well for major obesity reduction and maintainence of that weight loss. These little piddly 10 pound average weight reduction studies that have cropped up in the last few years clearly aren't oriented to solving the obesity problem. They may be fine for a little "trim up", but if they continue in the same vein, it won't make any movement to cracking the "Obesity Problem". I can imagine that the proposals to get the research dollars bang about the severity of the "Obesity Epidemic" and then deliver a small 10 pound bag of average eliminated fat. 10 pounds of fat isn't a cure for obesity. Can we have "truth in proposal writing" laws written? Jim Jake Martin wrote: Low-carb diet speeds initial weight loss: study Fri Mar 23, 2:04 PM ET NEW YORK (Reuters Health) - In a study of overweight and obese people, those who went on a low carbohydrate diet lost more weight -- and more fat -- than their peers who went on a low-fat, portion-controlled diet. After 12 weeks on the low-carb plan, study participants had lost an average of 4.9 kilograms (10.8 pounds), compared to 2.5 kg (5.5 pounds) for their peers on the low-fat diet. However, after the weight-maintenance phase of the study, which lasted another 24 weeks, differences between the two groups in weight loss and fat mass remained, but were no longer statistically significant. The findings confirm that the low-carb diet tested in the study is a "reasonable alternative" to cutting fat and controlling portions in order to maintain a healthy weight, Dr. Kevin C. Maki of Radiant Research in Chicago and colleagues conclude. The approach Maki's team tested -- a reduced-glycemic-load (RGL) diet -- required people to restrict their carbohydrate intake and eat more low glycemic index (GI) foods, meaning foods that produce a relatively small, gradual increase in blood sugar levels. Low GI foods generally are rich in fiber, consist of more complex carbohydrates, and include vegetables, beans and whole grains. Study participants on the RGL diet did not eat certain high-carb foods, such as fruits and starches, for the first two weeks, and also abstained from alcohol, after which they introduced low-GI foods and were allowed to drink moderate amounts of alcohol. But they were allowed to eat as much of the permitted foods as they wanted. Those on the low-fat diet were instructed to reduce their energy intake 500 to 800 calories per day by eliminating high-fat foods and controlling portion sizes. After 12 weeks, study participants in either group could continue on the weight loss diet or switch to a weight maintenance plan. At 12 weeks, the low-carb group had lost significantly more weight, and also more fat -- 1.9 kg (4.2 pounds) of fat vs. 0.9 kg (2 pounds) for the low-fat diet group. By 36 weeks, the low-carb group had kept off 4.5 kg (10 pounds), compared to 2.6 kg (5.7 pounds) for the low-fat group, not a huge difference. Low-carb diet participants had maintained a 2 kg (4.4 pounds) loss of fat weight, compared to 1.3 kg (2.9 pounds) for the low fat group, which again was not a significant difference. The researchers say more research is needed to clarify the mechanisms responsible for the greater initial losses of body weight and fat associated with the RGL diet, to evaluate the persistence of these losses over longer treatment periods, and to obtain greater insight into strategies that would improve long-term weight-loss maintenance." SOURCE: American Journal of Clinical Nutrition, March 2007.- Hide quoted text - - Show quoted text - |
#5
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Low-carb diet speeds initial weight loss: study
Hi friend ,
Join this our bogs there is solution for jobs seeker http://globaljobsonline.blogspot.com Post your valuable comments; so you can get experts advice & tips GLOBAL JOBS ONLINE Best regards, Source4you Team On Mar 23, 5:34 pm, "Jake Martin" wrote: Low-carb diet speeds initial weight loss: study Fri Mar 23, 2:04 PM ET NEW YORK (Reuters Health) - In a study of overweight and obese people, those who went on a low carbohydrate diet lost more weight -- and more fat -- than their peers who went on a low-fat, portion-controlled diet. After 12 weeks on the low-carb plan, study participants had lost an average of 4.9 kilograms (10.8 pounds), compared to 2.5 kg (5.5 pounds) for their peers on the low-fat diet. However, after the weight-maintenance phase of the study, which lasted another 24 weeks, differences between the two groups in weight loss and fat mass remained, but were no longer statistically significant. The findings confirm that the low-carb diet tested in the study is a "reasonable alternative" to cutting fat and controlling portions in order to maintain a healthy weight, Dr. Kevin C. Maki of Radiant Research in Chicago and colleagues conclude. The approach Maki's team tested -- a reduced-glycemic-load (RGL) diet -- required people to restrict their carbohydrate intake and eat more low glycemic index (GI) foods, meaning foods that produce a relatively small, gradual increase in blood sugar levels. Low GI foods generally are rich in fiber, consist of more complex carbohydrates, and include vegetables, beans and whole grains. Study participants on the RGL diet did not eat certain high-carb foods, such as fruits and starches, for the first two weeks, and also abstained from alcohol, after which they introduced low-GI foods and were allowed to drink moderate amounts of alcohol. But they were allowed to eat as much of the permitted foods as they wanted. Those on the low-fat diet were instructed to reduce their energy intake 500 to 800 calories per day by eliminating high-fat foods and controlling portion sizes. After 12 weeks, study participants in either group could continue on the weight loss diet or switch to a weight maintenance plan. At 12 weeks, the low-carb group had lost significantly more weight, and also more fat -- 1.9 kg (4.2 pounds) of fat vs. 0.9 kg (2 pounds) for the low-fat diet group. By 36 weeks, the low-carb group had kept off 4.5 kg (10 pounds), compared to 2.6 kg (5.7 pounds) for the low-fat group, not a huge difference. Low-carb diet participants had maintained a 2 kg (4.4 pounds) loss of fat weight, compared to 1.3 kg (2.9 pounds) for the low fat group, which again was not a significant difference. The researchers say more research is needed to clarify the mechanisms responsible for the greater initial losses of body weight and fat associated with the RGL diet, to evaluate the persistence of these losses over longer treatment periods, and to obtain greater insight into strategies that would improve long-term weight-loss maintenance." SOURCE: American Journal of Clinical Nutrition, March 2007. |
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Another 10 Pounder Study -- Low-carb diet speeds initial weight loss: study
GLOBAL JOBS ONLINE
Hi friend , Join this our bogs there is solution for jobs seeker http://globaljobsonline.blogspot.com Post your valuable comments; so you can get experts advice & tips Best regards, Source4you Team On Mar 24, 3:10 am, wrote: Hi friend , GLOBAL JOBS ONLINE Join this our bogs there is solution for jobs seekerhttp://globaljobsonline.blogspot.com Post your valuable comments; so you can get experts advice & tips Best regards, Source4you Team On Mar 23, 6:46 pm, Jbuch wrote: I wonder what might be a proper design for a study to show what works well for major obesity reduction and maintainence of that weight loss. These little piddly 10 pound average weight reduction studies that have cropped up in the last few years clearly aren't oriented to solving the obesity problem. They may be fine for a little "trim up", but if they continue in the same vein, it won't make any movement to cracking the "Obesity Problem". I can imagine that the proposals to get the research dollars bang about the severity of the "Obesity Epidemic" and then deliver a small 10 pound bag of average eliminated fat. 10 pounds of fat isn't a cure for obesity. Can we have "truth in proposal writing" laws written? Jim Jake Martin wrote: Low-carb diet speeds initial weight loss: study Fri Mar 23, 2:04 PM ET NEW YORK (Reuters Health) - In a study of overweight and obese people, those who went on a low carbohydrate diet lost more weight -- and more fat -- than their peers who went on a low-fat, portion-controlled diet. After 12 weeks on the low-carb plan, study participants had lost an average of 4.9 kilograms (10.8 pounds), compared to 2.5 kg (5.5 pounds) for their peers on the low-fat diet. However, after the weight-maintenance phase of the study, which lasted another 24 weeks, differences between the two groups in weight loss and fat mass remained, but were no longer statistically significant. The findings confirm that the low-carb diet tested in the study is a "reasonable alternative" to cutting fat and controlling portions in order to maintain a healthy weight, Dr. Kevin C. Maki of Radiant Research in Chicago and colleagues conclude. The approach Maki's team tested -- a reduced-glycemic-load (RGL) diet -- required people to restrict their carbohydrate intake and eat more low glycemic index (GI) foods, meaning foods that produce a relatively small, gradual increase in blood sugar levels. Low GI foods generally are rich in fiber, consist of more complex carbohydrates, and include vegetables, beans and whole grains. Study participants on the RGL diet did not eat certain high-carb foods, such as fruits and starches, for the first two weeks, and also abstained from alcohol, after which they introduced low-GI foods and were allowed to drink moderate amounts of alcohol. But they were allowed to eat as much of the permitted foods as they wanted. Those on the low-fat diet were instructed to reduce their energy intake 500 to 800 calories per day by eliminating high-fat foods and controlling portion sizes. After 12 weeks, study participants in either group could continue on the weight loss diet or switch to a weight maintenance plan. At 12 weeks, the low-carb group had lost significantly more weight, and also more fat -- 1.9 kg (4.2 pounds) of fat vs. 0.9 kg (2 pounds) for the low-fat diet group. By 36 weeks, the low-carb group had kept off 4.5 kg (10 pounds), compared to 2.6 kg (5.7 pounds) for the low-fat group, not a huge difference. Low-carb diet participants had maintained a 2 kg (4.4 pounds) loss of fat weight, compared to 1.3 kg (2.9 pounds) for the low fat group, which again was not a significant difference. The researchers say more research is needed to clarify the mechanisms responsible for the greater initial losses of body weight and fat associated with the RGL diet, to evaluate the persistence of these losses over longer treatment periods, and to obtain greater insight into strategies that would improve long-term weight-loss maintenance." SOURCE: American Journal of Clinical Nutrition, March 2007.- Hide quoted text - - Show quoted text -- Hide quoted text - - Show quoted text - |
#7
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Low-carb diet speeds initial weight loss: study
Hi friend ,
Join this our bogs there is solution for jobs seeker http://globaljobsonline.blogspot.com Post your valuable comments; so you can get experts advice & tips Best regards, Source4you Team On Mar 24, 3:10 am, wrote: Hi friend , GLOBAL JOBS ONLINE Join this our bogs there is solution for jobs seekerhttp://globaljobsonline.blogspot.com Post your valuable comments; so you can get experts advice & tips Best regards, Source4you Team On Mar 23, 5:34 pm, "Jake Martin" wrote: Low-carb diet speeds initial weight loss: study Fri Mar 23, 2:04 PM ET NEW YORK (Reuters Health) - In a study of overweight and obese people, those who went on a low carbohydrate diet lost more weight -- and more fat -- than their peers who went on a low-fat, portion-controlled diet. After 12 weeks on the low-carb plan, study participants had lost an average of 4.9 kilograms (10.8 pounds), compared to 2.5 kg (5.5 pounds) for their peers on the low-fat diet. However, after the weight-maintenance phase of the study, which lasted another 24 weeks, differences between the two groups in weight loss and fat mass remained, but were no longer statistically significant. The findings confirm that the low-carb diet tested in the study is a "reasonable alternative" to cutting fat and controlling portions in order to maintain a healthy weight, Dr. Kevin C. Maki of Radiant Research in Chicago and colleagues conclude. The approach Maki's team tested -- a reduced-glycemic-load (RGL) diet -- required people to restrict their carbohydrate intake and eat more low glycemic index (GI) foods, meaning foods that produce a relatively small, gradual increase in blood sugar levels. Low GI foods generally are rich in fiber, consist of more complex carbohydrates, and include vegetables, beans and whole grains. Study participants on the RGL diet did not eat certain high-carb foods, such as fruits and starches, for the first two weeks, and also abstained from alcohol, after which they introduced low-GI foods and were allowed to drink moderate amounts of alcohol. But they were allowed to eat as much of the permitted foods as they wanted. Those on the low-fat diet were instructed to reduce their energy intake 500 to 800 calories per day by eliminating high-fat foods and controlling portion sizes. After 12 weeks, study participants in either group could continue on the weight loss diet or switch to a weight maintenance plan. At 12 weeks, the low-carb group had lost significantly more weight, and also more fat -- 1.9 kg (4.2 pounds) of fat vs. 0.9 kg (2 pounds) for the low-fat diet group. By 36 weeks, the low-carb group had kept off 4.5 kg (10 pounds), compared to 2.6 kg (5.7 pounds) for the low-fat group, not a huge difference. Low-carb diet participants had maintained a 2 kg (4.4 pounds) loss of fat weight, compared to 1.3 kg (2.9 pounds) for the low fat group, which again was not a significant difference. The researchers say more research is needed to clarify the mechanisms responsible for the greater initial losses of body weight and fat associated with the RGL diet, to evaluate the persistence of these losses over longer treatment periods, and to obtain greater insight into strategies that would improve long-term weight-loss maintenance." SOURCE: American Journal of Clinical Nutrition, March 2007.- Hide quoted text - - Show quoted text - |
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Another 10 Pounder Study -- Low-carb diet speeds initial weight loss: study
On Mar 23, 9:46 pm, Jbuch wrote:
I wonder what might be a proper design for a study to show what works well for major obesity reduction and maintainence of that weight loss. These little piddly 10 pound average weight reduction studies that have cropped up in the last few years clearly aren't oriented to solving the obesity problem. They may be fine for a little "trim up", but if they continue in the same vein, it won't make any movement to cracking the "Obesity Problem". I can imagine that the proposals to get the research dollars bang about the severity of the "Obesity Epidemic" and then deliver a small 10 pound bag of average eliminated fat. 10 pounds of fat isn't a cure for obesity. Can we have "truth in proposal writing" laws written? Jim Jake Martin wrote: Low-carb diet speeds initial weight loss: study Fri Mar 23, 2:04 PM ET NEW YORK (Reuters Health) - In a study of overweight and obese people, those who went on a low carbohydrate diet lost more weight -- and more fat -- than their peers who went on a low-fat, portion-controlled diet. After 12 weeks on the low-carb plan, study participants had lost an average of 4.9 kilograms (10.8 pounds), compared to 2.5 kg (5.5 pounds) for their peers on the low-fat diet. However, after the weight-maintenance phase of the study, which lasted another 24 weeks, differences between the two groups in weight loss and fat mass remained, but were no longer statistically significant. The findings confirm that the low-carb diet tested in the study is a "reasonable alternative" to cutting fat and controlling portions in order to maintain a healthy weight, Dr. Kevin C. Maki of Radiant Research in Chicago and colleagues conclude. The approach Maki's team tested -- a reduced-glycemic-load (RGL) diet -- required people to restrict their carbohydrate intake and eat more low glycemic index (GI) foods, meaning foods that produce a relatively small, gradual increase in blood sugar levels. Low GI foods generally are rich in fiber, consist of more complex carbohydrates, and include vegetables, beans and whole grains. Study participants on the RGL diet did not eat certain high-carb foods, such as fruits and starches, for the first two weeks, and also abstained from alcohol, after which they introduced low-GI foods and were allowed to drink moderate amounts of alcohol. But they were allowed to eat as much of the permitted foods as they wanted. Those on the low-fat diet were instructed to reduce their energy intake 500 to 800 calories per day by eliminating high-fat foods and controlling portion sizes. After 12 weeks, study participants in either group could continue on the weight loss diet or switch to a weight maintenance plan. At 12 weeks, the low-carb group had lost significantly more weight, and also more fat -- 1.9 kg (4.2 pounds) of fat vs. 0.9 kg (2 pounds) for the low-fat diet group. By 36 weeks, the low-carb group had kept off 4.5 kg (10 pounds), compared to 2.6 kg (5.7 pounds) for the low-fat group, not a huge difference. Low-carb diet participants had maintained a 2 kg (4.4 pounds) loss of fat weight, compared to 1.3 kg (2.9 pounds) for the low fat group, which again was not a significant difference. The researchers say more research is needed to clarify the mechanisms responsible for the greater initial losses of body weight and fat associated with the RGL diet, to evaluate the persistence of these losses over longer treatment periods, and to obtain greater insight into strategies that would improve long-term weight-loss maintenance." SOURCE: American Journal of Clinical Nutrition, March 2007.- Hide quoted text - - Show quoted text - Anybody else catch this? In the comments they state: "However, after the weight-maintenance phase of the study, which lasted another 24 weeks, differences between the two groups in weight loss and fat mass remained, but were no longer statistically significant. " Yet, when you read the truth: "By 36 weeks, the low-carb group had kept off 4.5 kg (10 pounds), compared to 2.6 kg (5.7 pounds) for the low-fat group, not a huge difference." So, you have someone writing this, who obviously doesn't understand the difference between "huge difference" and "statistically significant. At least I hope it's the moron writer and not the actual study that's responsible. It's also curious that these comments are made in light of the fact that it seems both groups at 36 weeks were just about where they were at 12 weeks, when the LC group was hailed as having lost significantly more weight. Regarding your comments, J, I have mixed feelings. The good news is these studies do show that LC works and works better than calorie restriction, low fat, etc. It also holds out hope that if folks chose to continue, they could lose more weight over the long term. On the other hand, it shows the problem of how hard it is to lose weight for the population at large. The recent study that put a group of women with an average weight of 190 on a variety of diets was particularly discouraging. After a year, those on LC were down a measily 10lbs. and other diets only 3-5 lbs. If they were starting from say 130 or 140, you would say 10lbs was excellent progress. But at 190 you would have hoped they could have lost a lot more than that. And these are folks meeting with dieticians, under some supervision, you would think motivated by being in a study, etc. Actually, now that I think about it, given what we know about dieticians, maybe meeting with them is part of the problem? LOL I think the solution to the obesity problem is going to have to come from researchers eventually understanding the root genetics, biology, etc behind it and then developing an effective drug. Clearly, nothing else is working. |
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Another 10 Pounder Study -- Low-carb diet speeds initial weight loss: study
You need to take a course in statistics - really. That 10 pounds is an average and absolutely huge!! Many of those people lost over 50 pounds. Did you no know that? On Fri, 23 Mar 2007 21:46:24 -0500, Jbuch wrote: I wonder what might be a proper design for a study to show what works well for major obesity reduction and maintainence of that weight loss. These little piddly 10 pound average weight reduction studies that have cropped up in the last few years clearly aren't oriented to solving the obesity problem. They may be fine for a little "trim up", but if they continue in the same vein, it won't make any movement to cracking the "Obesity Problem". I can imagine that the proposals to get the research dollars bang about the severity of the "Obesity Epidemic" and then deliver a small 10 pound bag of average eliminated fat. 10 pounds of fat isn't a cure for obesity. Can we have "truth in proposal writing" laws written? Jim Jake Martin wrote: Low-carb diet speeds initial weight loss: study Fri Mar 23, 2:04 PM ET NEW YORK (Reuters Health) - In a study of overweight and obese people, those who went on a low carbohydrate diet lost more weight -- and more fat -- than their peers who went on a low-fat, portion-controlled diet. After 12 weeks on the low-carb plan, study participants had lost an average of 4.9 kilograms (10.8 pounds), compared to 2.5 kg (5.5 pounds) for their peers on the low-fat diet. However, after the weight-maintenance phase of the study, which lasted another 24 weeks, differences between the two groups in weight loss and fat mass remained, but were no longer statistically significant. The findings confirm that the low-carb diet tested in the study is a "reasonable alternative" to cutting fat and controlling portions in order to maintain a healthy weight, Dr. Kevin C. Maki of Radiant Research in Chicago and colleagues conclude. The approach Maki's team tested -- a reduced-glycemic-load (RGL) diet -- required people to restrict their carbohydrate intake and eat more low glycemic index (GI) foods, meaning foods that produce a relatively small, gradual increase in blood sugar levels. Low GI foods generally are rich in fiber, consist of more complex carbohydrates, and include vegetables, beans and whole grains. Study participants on the RGL diet did not eat certain high-carb foods, such as fruits and starches, for the first two weeks, and also abstained from alcohol, after which they introduced low-GI foods and were allowed to drink moderate amounts of alcohol. But they were allowed to eat as much of the permitted foods as they wanted. Those on the low-fat diet were instructed to reduce their energy intake 500 to 800 calories per day by eliminating high-fat foods and controlling portion sizes. After 12 weeks, study participants in either group could continue on the weight loss diet or switch to a weight maintenance plan. At 12 weeks, the low-carb group had lost significantly more weight, and also more fat -- 1.9 kg (4.2 pounds) of fat vs. 0.9 kg (2 pounds) for the low-fat diet group. By 36 weeks, the low-carb group had kept off 4.5 kg (10 pounds), compared to 2.6 kg (5.7 pounds) for the low-fat group, not a huge difference. Low-carb diet participants had maintained a 2 kg (4.4 pounds) loss of fat weight, compared to 1.3 kg (2.9 pounds) for the low fat group, which again was not a significant difference. The researchers say more research is needed to clarify the mechanisms responsible for the greater initial losses of body weight and fat associated with the RGL diet, to evaluate the persistence of these losses over longer treatment periods, and to obtain greater insight into strategies that would improve long-term weight-loss maintenance." SOURCE: American Journal of Clinical Nutrition, March 2007. |
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Another 10 Pounder Study -- Low-carb diet speeds initial
Deke wrote:
You need to take a course in statistics - really. That 10 pounds is an average and absolutely huge!! Many of those people lost over 50 pounds. Did you no know that? I did NOT *know* that. I didn't know because the usual press releases don't elaborate on things like the range of the data (max/min), or the quartile values or the standard deviations of the weight loss ranges for the subjects. I reread the posted data and none of that was included. So. A few people will lose a lot - which is what is to be expected based on the usual statistical distributions. Many people won't lose squat...and some will gain - also based on the ordinary statistics and what is known of human nature -- not able to follow directions being a well known ability of people. Can you back up the statement that the "10 pounds is absolutely huge??" I would like to see that to better understand the difficulty of combating general obesity in the population by dieting. I stand by my position that these kinds of studies aren't giving, yet, useful information on how to combat obesity in the general population. On Fri, 23 Mar 2007 21:46:24 -0500, Jbuch wrote: I wonder what might be a proper design for a study to show what works well for major obesity reduction and maintainence of that weight loss. These little piddly 10 pound average weight reduction studies that have cropped up in the last few years clearly aren't oriented to solving the obesity problem. They may be fine for a little "trim up", but if they continue in the same vein, it won't make any movement to cracking the "Obesity Problem". I can imagine that the proposals to get the research dollars bang about the severity of the "Obesity Epidemic" and then deliver a small 10 pound bag of average eliminated fat. 10 pounds of fat isn't a cure for obesity. Can we have "truth in proposal writing" laws written? Jim Jake Martin wrote: Low-carb diet speeds initial weight loss: study Fri Mar 23, 2:04 PM ET NEW YORK (Reuters Health) - In a study of overweight and obese people, those who went on a low carbohydrate diet lost more weight -- and more fat -- than their peers who went on a low-fat, portion-controlled diet. After 12 weeks on the low-carb plan, study participants had lost an average of 4.9 kilograms (10.8 pounds), compared to 2.5 kg (5.5 pounds) for their peers on the low-fat diet. However, after the weight-maintenance phase of the study, which lasted another 24 weeks, differences between the two groups in weight loss and fat mass remained, but were no longer statistically significant. The findings confirm that the low-carb diet tested in the study is a "reasonable alternative" to cutting fat and controlling portions in order to maintain a healthy weight, Dr. Kevin C. Maki of Radiant Research in Chicago and colleagues conclude. The approach Maki's team tested -- a reduced-glycemic-load (RGL) diet -- required people to restrict their carbohydrate intake and eat more low glycemic index (GI) foods, meaning foods that produce a relatively small, gradual increase in blood sugar levels. Low GI foods generally are rich in fiber, consist of more complex carbohydrates, and include vegetables, beans and whole grains. Study participants on the RGL diet did not eat certain high-carb foods, such as fruits and starches, for the first two weeks, and also abstained from alcohol, after which they introduced low-GI foods and were allowed to drink moderate amounts of alcohol. But they were allowed to eat as much of the permitted foods as they wanted. Those on the low-fat diet were instructed to reduce their energy intake 500 to 800 calories per day by eliminating high-fat foods and controlling portion sizes. After 12 weeks, study participants in either group could continue on the weight loss diet or switch to a weight maintenance plan. At 12 weeks, the low-carb group had lost significantly more weight, and also more fat -- 1.9 kg (4.2 pounds) of fat vs. 0.9 kg (2 pounds) for the low-fat diet group. By 36 weeks, the low-carb group had kept off 4.5 kg (10 pounds), compared to 2.6 kg (5.7 pounds) for the low-fat group, not a huge difference. Low-carb diet participants had maintained a 2 kg (4.4 pounds) loss of fat weight, compared to 1.3 kg (2.9 pounds) for the low fat group, which again was not a significant difference. The researchers say more research is needed to clarify the mechanisms responsible for the greater initial losses of body weight and fat associated with the RGL diet, to evaluate the persistence of these losses over longer treatment periods, and to obtain greater insight into strategies that would improve long-term weight-loss maintenance." SOURCE: American Journal of Clinical Nutrition, March 2007. |
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