People can have better control over their blood sugar levels by changing their lifestyle. A change in timing of when they eat and exercise may help plan lifestyle interventions to counter diabetes and reduce body weight.
The researchers, including those from the University of Bath in the UK, said that people who performed an exercise before breakfast burned double the amount of fat than those who exercised after the morning meal.
The results of the study are published in the Journal of Clinical Endocrinology & Metabolism. It reveals that performing an exercise in the overnight-fasted state could increase the health benefits of exercise for individuals. Especially without changing the intensity, duration, or perception of their effort.
The researchers conducted a six-week study involving thirty male participants classified either as obese or overweight. Later researchers compared the results from two groups — those who ate breakfast before exercise, and those who ate after.
The study also involved a control group of participants who made no lifestyle changes, the researchers said.
Increased fat use is due to lower insulin levels during exercise when people have fasted overnight. It indicates that they can use more of the fat from their fat tissue and the fat within their muscles as a fuel, the researchers said.
The six-week study did not lead to any significant weight loss in the participants. But researchers added that it did have “profound and positive” effects on their health. It is because their bodies were better able to respond to insulin, keeping blood sugar levels under control, and potentially lowering the risk of diabetes and heart disease.
“Our results suggest that changing the timing of when you eat concerning when you exercise can bring about profound and positive changes to your overall health,” said Javier Gonzalez. He is the co-author of the study and professor at the University of Bath.
Gonzalez said that the group who exercised before breakfast increased their ability to respond to insulin. It was more significant as both exercise groups lost a similar amount of weight, and gained similar fitness levels.
“The only difference was the timing of the food intake,” he said.
According to the researchers, the muscles from those who exercised before breakfast showed more increase in key proteins. It is specifically for those involved in transporting glucose from the bloodstream to the muscles.
However, the researchers noted that the short-term study involved only men, and they look to explore the longer-term effects of this type of exercise, and whether women benefit in the same way as men.