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Sprint Interval Training Can Help You Lose More Weight

by Adeline Dorcas on February 15, 2019 at 2:33 PM
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Sprint Interval Training Can Help You Lose More Weight

Interval training may help you lose more weight than a continuous moderate intensity workout, reports a new study. The findings of the study are published in the British Journal of Sports Medicine.

And sprint interval training may be most effective for weight loss, the analysis indicates, although the breadth of training programmes studied makes it difficult to recommend one particular approach over another, caution the researchers.

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Most physical activity guidelines recommend a high volume of exercise for weight loss, equivalent to an hour or more every day (420 minutes+/week). But few people can carve out the time needed to meet this recommendation, say the researchers.

They wanted to find out if interval training might match a continuous moderate intensity workout for overall weight loss (total absolute fat mass) and reductions in percentage body fat-the percentage of fat that makes up body weight-despite taking less time to do.
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Interval training describes the intermittent intense effort, interspersed with recovery periods. The two most common types are high-intensity interval training, or HIIT for short, which includes various exercises; and sprint interval training, which includes running, jogging, speed walking, and cycling.

So they searched research databases for relevant studies that directly or indirectly compared interval training with continuous moderate intensity exercise over a period of at least four weeks.

The data from 41 studies involving 1115 people were combined for thematic analysis, and the results data from 36 studies involving 1012 people were pooled.

Both interval training and a continuous workout reduced overall weight and percentage body fat, irrespective of starting weight or gender, the findings showed.

But while there was no significant difference in percentage body fat reduction between the two approaches, there was a significant difference in the amount of weight lost, with interval training proving the more effective method.

Interval training provided a 28.5 per cent greater reduction in weight, overall (1.58 kg vs 1.13 kg).

Further analysis, comparing sprint interval training with a continuous moderate intensity workout, revealed an even larger difference in weight loss.

Factors such as supervision; age under 30; walking, running, and jogging; study quality; and studies lasting more than 12 weeks all influenced weight loss in the interval training programmes.

"It is important to be aware of the possible risks and caveats associated with higher intensity training," the researchers point out. "For example, it might increase the risk of injury and impose higher cardiovascular stress. Adherence should also be examined as higher intensity protocols can result in higher discomfort."

And before anyone decides to take up sprint interval training as the most effective exercise for losing weight, the researchers sound a note of caution.

The wide variety of different interval training programmes included in their analysis "makes it difficult to generally recommend that one particular protocol is 'best' for modulating body adiposity," they conclude.

Source: Eurekalert
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