Regular consumption of dietary protein can help improve muscle health
Posted February 9th, 2017, 12:19 PM IST
People with higher overall protein intake had higher muscle mass and stronger quadriceps, the muscle in front of the thigh, said lead author Kelsey Mangano of the University of Massachusetts in Lowell.
Proteins are found in meat, fish, poultry, eggs, dairy, vegetables, grains and nuts. The Institute of Medicine recommends adults get about 0.8 grams of protein per kilogram of body weight each day. That translates to about 56 grams (about 2 ounces) per day for a sedentary person who weighs 70 kg (about 154 pounds).Protein is known to protect bone density, muscle mass and strength, but it's been unclear whether the protein must come from specific food sources, the researchers write in The American Journal of Clinical Nutrition.
For example, do people who get their proteins from meat benefit more than people who get their proteins from non-animal food sources, or vice versa.The researchers used data from 2,986 men and women, ages 19 to 72, who filled out questionnaires about their diets between 2002 and 2005.Overall, about 82 percent of participants were getting the recommended daily amount of protein. Their diets fell into one of six patterns: fast food and full fat dairy, fish, red meat, chicken, low fat milk, and legumes.
The researchers then looked to see if the participants' dietary patterns were tied to their muscle mass, muscle strength and bone density.Unlike past studies, the researchers found no links between dietary protein consumption and bone density, although they did find that dietary protein was tied to muscle mass and strength.
Muscle mass and strength were higher among people who consumed the most protein, compared to those who consumed the least.People with the highest amounts of protein in their diets were eating about 1.8 grams per kilogram of body weight per day (or about 0.03 ounces per pound of body weight), compared to 0.8 grams per kilogram (about 0.01 ounces per pound) among those eating the least.
The results did not change based on people's dietary patterns. A person getting a large amount of protein from red meat was benefiting as much as a person getting it from legumes.
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