Two recent studies by diet and health researchers confirm that dieting alone is not the best or the healthiest way to go about weight loss.
Dennis T. Villareal, M.D., Washington University School of Medicine, St. Louis, and colleagues studied the effects of weight loss on bone loss in 48 adults with an average age of 57. Nineteen were assigned to follow a calorie-restricted diet, 19 to eat the same number of calories and begin an exercise, and 10 to receive information on healthy lifestyles only when requested.
All participants were weighed at the beginning of the study and again after one, three, six, nine and 12 months. Bone mineral density was measured every three months.
After one year, those in the calorie restriction group lost an average of 18.1 pounds, those in the exercise intervention group lost 14.8 pounds and those in the healthy lifestyle group maintained their weight. Individuals in the calorie-restriction group also lost an average of 2.2 percent of their bone density in the lower spine, 2.2 percent at the hip and 2.1 percent at the top end of the femur--all high-risk fracture sites.
There were no significant changes in bone mineral density in the exercise or healthy lifestyle groups.
Muscles pulling on bones during exercise is thought to produce strains in the skeleton that stimulate new bone production. "Our results are consistent with an osteoprotective effect of exercise-induced mechanical strain on the skeleton and consequent increase in bone turnover," the authors continue.
In another study, a Washington University team of scientists studied healthy 50- to 60-year olds whose body mass index was between 23 and 30, placing them at the high end of normal weight or overweight. Of the 34 study participants, 18 dieted and 16 exercised to lose weight.
After one year the participants lost an average of between 9 and 10 percent of their total body weight.
Those who dieted lost muscle mass while those who exercised did not. This is because the exercisers routinely challenged their muscles, which prevented muscle tissue from degrading. A subgroup that did 30 minutes per day of extra exercise lost an average of 18 percent of their total body weight with no loss of muscle tissue.
The lesson is clear. If you diet alone to lose weight you are only creating a lighter bag of skin. For healthy weight loss you must work your muscles and pound your bones.
Here is a simple formula that you can use to lose two pounds of body fat per week. One pound of fat = 3,500 calories. If you do nothing to change your eating habits, and exercise to burn 7,000 calories per week, you will lose two pounds of body fat per week and keep or build your bone density and muscle at the same time. A win-win.
Putting your feet on the ground at about 75 counts per minute burns .078 Calories/Minute/Pound of Body Weight, or more easily remembered, 7.8 calories per minute, or 468 calories per hour, per 100 pounds of body weight.
A 200 pound person would require about 7 1/2 hours per week of exercise that pounded their feet on the ground 75 times per minute. Use this formula to convert for your situation:
(Your Body Weight/100) * 468 * (Steps Per Minute/75) = Calories Per Hour. Divide 7,000 by the Calories Per Hour figure and that is how many hours of exercise per week you must do to lose 2 pounds of body fat. If you cannot find a way to lose 2 pounds of body fat per week then shoot to eliminate 1 pound of body fat per week. That is still 52 pounds of healthy weight loss per year.
(C) Peter Somerville. A treadmill fitness program can lose weight, and build muscle and bone mass while providing healthy aerobic exercise. Article Source: http://EzineArticles.com/?expert=Peter_Somerville |
Research In Childhood Obesity In Children Highlights Physical Activity Levels
A British study, involving 5,500 children and published in the latest issue of PLoS Medicine, used accurate methods to measure the 'fat mass' of the children and the amount of physical activity they were taking. The researchers, based at the University of Bristol, concluded that low levels of activity, particularly moderate and vigorous activity, play an important role in the development of obesity. [click link for full article]
Obesity Surgery Can Lead To Memory Loss, Other Problems
Weight loss surgery, such as gastric bypass surgery, can lead to a vitamin deficiency that can cause memory loss and confusion, inability to coordinate movement, and other problems, according to a study published in the March 13, 2007, issue of Neurology®, the scientific journal of the American Academy of Neurology. The syndrome, called Wernicke encephalopathy, affects the brain and nervous system when the body doesn't get enough vitamin B1, or thiamine. [click link for full article]
Corn: How Much Do You Eat?
When I think of corn - I think of a tasty cob - freshly picked at the height of summer. If only it was really like that. Corn (Zea Mays) is actually a major ingredient in a phenomenal number of processed foods (corn syrup in particular). A new feature-length documentary - King Corn - explores the whole corn industry...
Is Subway Better Than McDonald's?
Subway have taken aim at McDonald's with their new "Fresh Fit" meals. The combo meals are compared side-by-side against a Big Mac meal. Subway's meal comes out at 265 calories, while the Big Mac meal hits a gluttonous 1230 calories. But there's more to it than that......
Do You Pursue an Hourglass Figure?
Forgive the double entendre. When it comes to the hourglass figure - many women pursue it, and it seems that men pursue women with it. Psychologists at the University of Texas (obviously with way too much time on their hands) have reviewed hundreds of years worth of literature and concluded: Men lust after slender-waisted women. Apparently it all comes down...
Plagued By Diet Disasters? A Visit To A Registered Dietician Could Help
Studies indicate more than one-third of adults are trying to lose weight, but few have long-term success. Many can't stick to diets and exercise routines and struggle to stay afloat in a sea of popular diets, fitness programs and foods with "healthy" claims.But weight-loss seekers have someone to turn to. [click link for full article]
Fruit Juice: Making Kids Fat?
Research from Australia has concluded that children who drink 2 cups of fruit juice or fruit drinks per day were more likely to be overweight or obese than those who did not. It seems that the more fruit juice consumed, the more chance of being overweight: "Children who drank more than three glasses of soft drink - three quarters...
Be Inspired: Shannan's Story
Some people have it tough, and others have it very tough. Shannan Hutchinson is one of the latter. Shannan has Multiple Sclerosis - yet despite the phenomenal challenges posed by her illness, Shannan was able to lose over 90 pounds - by eating right and exercising. Here is her story....
Red Pepper: Hot Stuff For Fighting Fat?
Food scientists in Taiwan are reporting new evidence from laboratory experiments that capsaicin - the natural compound that gives red pepper that spicy hot kick - can reduce the growth of fat cells. The study is scheduled for the March 21 issue of the ACS' Journal of Agricultural and Food Chemistry, a bi-weekly publication. [click link for full article]
The Answer To Childhood Obesity: 15 Minutes Of Football?
ALSPAC The Avon Longitudinal Study of Parents and Children (also known as Children of the 90s) is a unique ongoing research project based in the University of Bristol. It enrolled 14,000 mothers during pregnancy in 1991-2 and has followed most of the children and parents in minute detail ever since. [click link for full article]