Science News article What are the most fitting muscles in the body?
You can’t be the most athletic if you’re not the most muscular.
That’s a concept that has puzzled evolutionary biologists for decades, but a new study has revealed that it’s actually a common genetic trait.
“Our genes tell us, ‘You can’t fit more than you can move,'” says lead author Matthew D’Andrea, a developmental biologist at the University of Michigan.
“The genes tell you that if you are too small, you will get too fat.”
What’s the most accurate way to find out?
The researchers used a technique called genetic variation detection to determine which genes were associated with body fatness.
This means that the genes are being expressed in a specific way in the muscle tissue.
They then compared the gene expression profiles of people who were obese and lean, and the genes were found to be identical.
“We are looking at genetic differences, which is not always easy to do,” says D’Amore.
“What we did was compare the differences between the two groups of people to see what the genetic differences were.”
In other words, the scientists used the genes of obese individuals to look at genetic variation in people who are lean.
That was the way they would have done it in a normal study.
This method was not as good at finding the genes associated with fatness, however, because the muscles were different from the rest of the body.
So the researchers looked for differences in the genes between fat and lean people, and they found that the differences in genes associated in the muscles are most common in the fat people.
“That is, the genes that are associated with the fat-to-muscle difference are very common in people of normal weight,” says the study’s lead author, Dr. Christopher Sperling, an evolutionary biologist at New York University.
So, the team then used genetic variation to look for differences between fat people and leaners.
And they found the differences were most common.
That finding is exciting, because it suggests that the gene-expression differences are more common among the people who have a high degree of body fat.
What does this mean for people?
The team believes that the fat gene may help explain why people of certain body types have more body fat than others.
“This could be a genetic predisposition,” says Spering.
“It could be that some people with a very high degree are more fat than people with lower levels of body weight.”
So the genes involved in body fat are likely to be associated with more body weight than other genes.
In addition, the researchers believe that the genetic difference may be associated in some way with how people move.
“If people who had a higher degree of fat are more likely to have an impaired ability to move and have a poor grip strength, that could have a role in explaining why people with higher body fat have a lower ability to hold onto objects,” says Lenny S. Turetsky, an assistant professor of physical therapy at the Icahn School of Medicine at Mount Sinai in New York City.
“And people who live in areas where they’re more prone to obesity might also be at higher risk for having low body fat.”
How do the scientists explain this finding?
“This is not something we can say at this time,” says Dr. D’andrea.
“But we think it has to do with the way genes work, and how their expression is regulated in the different tissues.
It’s possible that the underlying cause of body composition is genetic.
It could be related to genetics, but we don’t know.
It may also be related more to environment and how the body is shaped, and that could be the key factor in why there are differences in body composition.
So this research is really exciting, but it is very preliminary.”
How to help overweight people get the body they want: This study has important implications for how people of all body types can get a healthy body.
“Obesity is a chronic disease, and it’s a growing problem worldwide,” says Tureky.
“So it could be important to take steps to help obese people get a healthier body and not to stigmatize them as being overweight.
And people of any body type can be a burden for their health.”
It could also be that the changes that the body makes as it gets older may also affect how it moves.
For instance, in some cases, older people who don’t exercise often lose more weight, so their muscles are more susceptible to the stress of exercising.
And, of course, weight loss and muscle loss don’t have to be mutually exclusive.
“I know of very overweight people who lose weight and gain muscle,” says Erika E. Oster, a clinical psychologist at Stony Brook University in New Jersey.
“They do this in conjunction with exercise.
But it is not a complete cure.”
So if you or someone you know is overweight, it’s important to help them get the right exercise and