Want to get healthy? Exercise 7 minutes a week

By Michael Kahn

LONDON (Reuters) - Rigorous workouts lasting as little as three minutes may help prevent diabetes by helping control blood sugar, British researchers said on Wednesday.

The findings published in the journal BioMed Central Endocrine Disorders suggest that people unable to meet government guidelines calling for moderate to vigorous exercise several hours per week can still benefit from exercise.

"This is such a brief amount of exercise you can do it without breaking a sweat," said James Timmons, an exercise biologist at Heriot-Watt University in Edinburgh, who led the study.

"You can make just as big as an effect doing this as you can by doing hours and hours of endurance training each week."

Type 2 diabetes, which affects an estimated 246 million adults worldwide and accounts for 6 percent of all global deaths, is a condition in which the body gradually loses the ability to use insulin properly to convert food to energy.

Very strict diet and vigorous, regular and sustained exercise can reverse type 2 diabetes, but this can be difficult for many people. The condition is closely linked to inactivity.

Timmons and his team showed that just seven minutes of exercise each week helped a group of 16 men in their early twenties control their insulin.

The volunteers, who were relatively out of shape but otherwise healthy, rode an exercise bike four times daily in 30 second spurts two days a week.