Short Exercise 'Movement Snacks' Boost Cardiovascular Fitness, Study Finds

Researchers analyzing data from eleven studies involving 414 largely inactive adults found that brief bouts of moderate or intense activity lasting two to five minutes – termed “movement snacks” – performed at least twice daily on three to seven days a week for four to twelve weeks significantly improved participants’ endurance and cardiorespiratory fitness. The effect was strongest for women, while no measurable gains were seen in leg strength or blood‑marker levels. Adherence was high, with about 83 % of participants maintaining the routine.

A separate cohort study of 17,088 UK Biobank volunteers, monitored with accelerometers, showed that meeting the World Health Organization’s recommendation of 150 minutes of moderate‑to‑vigorous activity per week reduced cardiovascular disease risk by roughly 8‑9 %. Individuals with lower baseline fitness required substantially more activity (560‑610 minutes per week) to achieve comparable risk reductions. Mendelian randomisation analysis further linked genetically higher cardiorespiratory fitness to a lower risk of heart failure (odds ratio 0.79).