
A few minutes of intense exercise a week is just as good as a half-hour of moderate physical activity a day for reducing a person's risk of developing type 2 diabetes -- and may actually be even more effective, new research hints.
"It is possible to gain significant health benefits from only 7.5 minutes of exercise each week -- if that is all that you find the time to do," Dr. James A. Timmons of Heriot-Watt University in Edinburgh, one of the researchers on the study, told Reuters Health.
Timmons and his team found that young sedentary men who did just 15 minutes of all-out sprinting on an exercise bike spread out over two weeks substantially improved their ability to metabolize glucose (sugar). Traditional aerobic exercise programs can boost sensitivity to the key blood-sugar-regulating hormone insulin. The high-intensity program did this too, but it also directly reduced the men's blood sugar levels -- something that standard exercise programs have not been shown to do.
Based on the findings, Timmons told Reuters Health, people should try for four to six 30-second bouts of intense exercise, such as cycling or running up stairs, twice a week. While this is appropriate for people 20 to 40 years old who are in good health but not fit, he added, people with diabetes or heart disease should gradually increase their activity under a doctor's supervision.
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"It is possible to gain significant health benefits from only 7.5 minutes of exercise each week -- if that is all that you find the time to do," Dr. James A. Timmons of Heriot-Watt University in Edinburgh, one of the researchers on the study, told Reuters Health.
Timmons and his team found that young sedentary men who did just 15 minutes of all-out sprinting on an exercise bike spread out over two weeks substantially improved their ability to metabolize glucose (sugar). Traditional aerobic exercise programs can boost sensitivity to the key blood-sugar-regulating hormone insulin. The high-intensity program did this too, but it also directly reduced the men's blood sugar levels -- something that standard exercise programs have not been shown to do.
Based on the findings, Timmons told Reuters Health, people should try for four to six 30-second bouts of intense exercise, such as cycling or running up stairs, twice a week. While this is appropriate for people 20 to 40 years old who are in good health but not fit, he added, people with diabetes or heart disease should gradually increase their activity under a doctor's supervision.
Read more