A recent study published in Nature Communications reveals that adults with central obesity can achieve significant health benefits from just one 75-minute session of brisk interval walking per week. This challenges the traditional view that exercise must be spread across multiple days to be effective.

Central obesity, characterized by excess fat around the waist, is linked to higher risks of heart disease, type 2 diabetes, stroke, and certain cancers. Reducing this abdominal fat is crucial for lowering these health risks.

Study Design and Findings

  • 315 Chinese adults with central obesity participated in the 16-week study.
  • Participants were split into three groups: one walked briskly for 75 minutes once weekly, another spread the same exercise over three sessions weekly, and a control group attended health education sessions without walking.
  • Both exercise groups showed similar reductions in body fat, waist circumference, and improvements in cardiovascular fitness compared to the control group.

The walking involved intervals of faster and slower paces at speeds of about 5 to 6.5 km/h, raising heart rate while allowing conversation.

Implications and Expert Insights

Researchers emphasize that a single weekly session of interval walking can be a practical alternative for busy individuals who struggle to exercise regularly. This approach aligns with previous findings on "weekend warriors" who concentrate physical activity into fewer days.

However, experts caution that this should not replace regular movement throughout the week, which supports overall well-being including muscle strength and mental health.

Brisk interval walking is accessible, requiring no special equipment and can be done in various settings such as parks or malls.

Health Recommendations

The World Health Organization advises adults to engage in 150 to 300 minutes of moderate-intensity exercise weekly. This study suggests that meeting part of this target in one session can still yield important health improvements for those with central obesity.

For individuals pressed for time, dedicating 75 minutes once a week to brisk interval walking may be an effective first step toward reducing belly fat and enhancing heart health.