According to a recent study, performing interval training just once a week can be as beneficial as exercising three times a week for weight loss and enhancing cardiovascular health.
This insight, featured in the journal Nature Communications, provides a practical solution for individuals who struggle to find time for regular gym visits due to work or family obligations.
A breakthrough in managing abdominal obesity
Abdominal obesity is notably one of the most harmful types of fat accumulation, closely associated with cardiovascular disease, metabolic issues, and an increased risk of mortality.
While exercise is crucial for tackling this issue, many people find it challenging to maintain a consistent workout routine, particularly those who are overweight.
The research team from the School of Public Health at the University of Hong Kong discovered that “intermittent brisk walking,” even if performed just once a week, can lead to reductions in body fat mass and significant enhancements in cardiorespiratory fitness.
Why is interval training more effective?
Interval training involves short bursts of high-intensity exercise (like brisk walking) interspersed with periods of rest or light activity (such as slow walking).
This approach is deemed far more effective for burning visceral fat than steady, continuous walking.
Professor Parco Siu Ming-Fai, the head of the Department of Kinesiology at the University of Hong Kong and the study’s lead author, states, “Current guidelines typically suggest exercising three times a week, but our findings indicate that if the total weekly exercise duration remains the same, fewer high-quality sessions can yield similar outcomes.”
Clinical trial details: 75 minutes a week is enough
The research took place from September 2021 to September 2024, involving 315 adults in Hong Kong dealing with abdominal obesity.
Participants were split into three groups: one group completed 75 minutes of interval training in a single session weekly; another group did the same total time broken down into three 25-minute sessions; and a control group received only health education.
After 16 weeks, results were notable: both exercise groups, regardless of whether they trained once or thrice weekly, showed similar decreases in total body fat mass, body fat percentage, and waist circumference. Their heart and lung fitness also improved comparably.
An ideal option for ‘weekend warriors’
The results lend support to the “weekend warriors” exercise pattern, where individuals consolidate their physical activity into one or two days off.
Professor Siu asserts, “For many adults balancing work, study, and family, the main obstacle to exercising is time. Our findings suggest that a once-a-week workout is a feasible and effective option for those who can’t find a few days every week.”
Experts stress that maintaining workout intensity during that single session is crucial for success.
Overall, this research paves the way for new strategies in managing obesity within our hectic modern lifestyles, highlighting that the quality and total duration of activity can be more important than daily exercise.
