Exercise more beneficial on an empty stomach, research shows

Exercising before breakfast is better for you than exercising afterwards according to new research by scientists at the University of Glasgow.

Dr Jason Gill and Nor Farah of the Institute of Cardiovascular and Medical Sciences conducted a study to compare the effects of performed before and after breakfast on fat loss and metabolic health.

Ten overweight men who were not regular exercisers took part in the study. Each man underwent three trials, 1-2 weeks apart, involving performing no exercise then eating breakfast; walking briskly for 60 minutes before eating breakfast; or doing the same walk after eating breakfast.

Participants were given lunch three-and-a-half hours after breakfast and the amount of fat their body burned, and the levels of fat, sugars and in the blood were measured over an eight-and-a-half hour period on each occasion.

Over the course of the day with no exercise the men were left with an average of 49kcal unburnt fat while exercising after breakfast burned 216kcal more of fat on average than the control trial and 298kcal more than the control group when exercising before breakfast.

The results indicated that both timings of exercise increased over the day and improved the in the blood. But, exercise before breakfast resulted in greater fat loss and larger reductions in the level of fat in the blood.

Dr Gill said "Any exercise you do is beneficial, but the indications are that there might be an extra benefit associated with exercising before eating, compared to after. However, further study is needed to determine whether the present findings extend over the long term.

"In the end, we would like to encourage everyone to do some form of exercise everyday – the difference between exercising before compared to after breakfast was much smaller than the difference between exercising at either time compared to not exercising at all."

The research paper, 'Effects of exercise before or after meal on balance and postprandial metabolism in overweight men' is published in the latest edition of the British Journal of Nutrition.

Related Stories

Low glycemic breakfast may increase benefits of working out

Apr 14, 2009

The benefits of physical activity and a balanced diet are well documented and form the basis of many public health recommendations. This is because each of these factors can independently influence risks for many chronic ...

To burn more fat, skip breakfast before workout

Jun 03, 2010

(AP) -- Running on empty may not be such a bad idea after all. Though many athletes eat before training, some scientists say that if you really want to get rid of more fat, you should skip the pre-workout ...

Big breakfast bunkum

Jan 17, 2011

Does eating a big breakfast help weight loss or is it better to skip breakfast altogether? Available information is confusing but new research published in BioMed Central's open access journal Nutrition Journal clears a path ...

Recommended for you

Preterm children's brains can catch up years later

10 hours ago

There's some good news for parents of preterm babies – latest research from the University of Adelaide shows that by the time they become teenagers, the brains of many preterm children can perform almost as well as those ...

Mortality rates increase due to extreme heat and cold

11 hours ago

Epidemiological studies have repeatedly shown that death rates rise in association with extremely hot weather. The heat wave in Western Europe in the summer of 2003, for example, resulted in about 22,000 extra deaths. A team ...

User comments