Short Bursts of Exercise May Improve Fitness and Blood Sugar in Inactive Adults

People who struggle to find time for traditional 30- or 60-minute workouts may benefit from incorporating short bursts of physical activity throughout the day.

A systematic review and meta-analysis involving 22 studies and 994 sedentary or inactive adults examined the effects of brief periods of exercise, sometimes described as “exercise snacks.” Researchers found associations with improvements in cardiorespiratory fitness, blood glucose and triglyceride levels.

The findings are significant because inactivity is a major risk factor for cardiovascular disease, type 2 diabetes and other chronic health conditions. Short activity sessions may provide a more practical starting point for people who find structured workouts difficult.

Examples of short activity periods can include brisk walking, climbing stairs or other activities that temporarily raise heart rate.

However, the evidence does not mean that brief exercise automatically provides all the benefits of a comprehensive fitness programme. Strength training, cardiovascular exercise, mobility work and adequate recovery can all have different roles.

The research nevertheless supports an important message: small amounts of movement may be better than prolonged inactivity, especially for people who are currently sedentary.