Scientific research is backing the fitness craze for high-intensity training as a new study has found it is not how long you workout, but how hard that makes the difference to weight loss.
The findings published in the American Journal of Health Promotion yesterday say that even brief episodes of physical activity can be beneficial, with women who do just one minute of brisk walking a day weighing half a pound less than those that don't.
Comparing over 2,202 women and 2,309 men over three years, groups were monitored doing different levels of intensity training in ten minute bouts.
'What we learned is that for preventing weight gain, the intensity of the activity matters more than duration,' says Jessie X. Fan, professor of family and consumer studies at the University of Utah where the research was carried out.
'This new understanding is important because fewer than 5 per cent of American adults today achieve the recommended level of physical activity in a week…Knowing that even short bouts of 'brisk' activity can add up to a positive effect is an encouraging message for promoting better health,' she added.
Currently, American health guidelines state that people should do 150-minutes of exercise a week, broken down into ten minute stints.
If you want to give some high intensity interval training a go - try this 20 minute workout (including a 5 minute warm-up and cool down).
Remember, go hard or go home...
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