Eight hours of interval sprinting can reverse negative effects of menopause

For the majority of menopausal women who are overweight and don't exercise, menopause is accompanied by a decrease in muscle mass and aerobic fitness and an increase in fat mass, which contributes to the increased rates of type 2 diabetes in postmenopausal women, read a website. 

Interval sprinting exercise, however, can reverse these negative effects of menopause.

“Interval sprinting is a very time-efficient form of exercise which we have seen result in a number of health benefits,” says the Dr. who led the research.

In the study, 40 overweight postmenopausal women were separated in two groups – one that completed the exercise intervention, and one that didn’t.

Women who participated in the eight-week bike sprints program put on 0.7 kilograms of muscle in their legs and trunk and lost 0.4 kilograms of body fat – after just eight hours of exercise. They also significantly increased their aerobic fitness, by 12%.

“The increase in muscle mass after eight hours of sprinting equates to an 86-gram gain per hour of sprint exercise. This compares favourably to the effect of weight training, which in postmenopausal women has typically shown a 40-gram gain in muscle mass per hour,” the Dr. says.

Dr. says the findings can be generalised to women similar to those in the study, i.e. women who are sedentary, overweight and menopausal.

“However, as is the case for all forms of exercise, if you don’t do it you lose it, so taking up interval sprinting exercise is a lifestyle change.”

The team has previously studied the impact of the sprinting program on normal weight and overweight young women and men, which also resulted in a significant increase of muscle mass and a loss of body fat after stationary sprint cycling for 20 minutes, three times a week.

Australia’s national guidelines recommend that people accumulate 2.5 to five hours of moderate intensity physical activity or 1.25 to 2.5 hours of vigorous intensity physical activity each week – this is what’s recommended to access the range of health benefits that exercise has.

“Our findings might be reassuring for people who find that tricky – it shows that any exercise is better than none, and that you can start small and build your activity up over time,” Dr. says.

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