High-intensity physical activity for a few minutes a day cuts the chances of dementia and diabetes

A study published on European Heart Journal analyzed data from almost 96,000 UK Biobank participants. Aqueles who dedicated more than 4% of their total activity to high-intensity efforts had a significantly lower risk of developing eight chronic diseases. The average follow-up lasted nine years.

The researchers used wrist accelerometers to objectively measure activity in one of the groups. Outro group reported the levels on its own. The results indicated significant reductions even among people who were already moving.

Reduções observed in the eight conditions

The group with a higher proportion of vigorous activity showed the following differences compared to those who did not exert any intense effort:

• 63% less risk of dementia
• 60% less risk of type 2 diabetes
• 48% less risk of liver steatosis
• 44% less risk of chronic respiratory diseases
• 41% less risk of chronic kidney disease
• 39% less risk of immune-mediated inflammatory diseases
• 31% less risk of major cardiovascular events
• 29% less risk of atrial fibrillation

The all-cause mortality rate fell by 46%. The benefits appeared even in individuals with a good base of activity who only increased the relative intensity. More sedentary Pessoas also gained by including brief vigorous moments.

Como identify high intensity effort

The main criterion involves a clear increase in heart and respiratory rate. A practical way is the speaking test. Quem can complete entire sentences at low or moderate intensity. Dificuldade to say more than two or three words in a row signals vigorous effort.

The level depends on each person’s conditioning. Para some, walking in large steps already increases the pace. Para others, more speed or endurance is needed. Movimentos sudden everyday events count. Correr for the bus, climbing stairs with heavy bags or playing actively with children can generate the desired effect.

Benefícios independent of total volume

The research highlighted that the intensity ratio matters more than the total movement time. Manter the same volume of activity and exchanging moderate part for vigorous brought additional gains. Isso is worth it for those who have little free time.

Especialistas recommend consulting a doctor before changing your routine. Qualquer discomfort during exertion requires immediate stopping. The study reinforces current public health guidelines that already value intensity.

Practical Exemplos to include in your routine

• Subir stairs instead of using elevator on multiple floors
• Caminhar fast for short stretches between appointments
• Fazer short intervals of effort during household chores
• Usar short routes for cycling or light running
• Incluir games or games that raise the heart rate

Esses adjustments require no gym or equipment. The important thing is to reach the point where your breathing becomes shorter for brief periods.

What the research suggests for the future

The data came from a large British database monitored over time. Medições objective reports by sensors gave greater accuracy than subjective reports. The authors draw attention to the potential of simple interventions in preventing chronic diseases.

Outros Studies with UK Biobank had already highlighted the advantages of physical activity in general. Esta analysis advances by separating the role of intensity. The findings were consistent in the two groups analyzed, although the effect was stronger in accelerometer data.

The work was published at the end of March 2026 by Sociedade Europeia of Cardiologia. Ele adds evidence to recommendations that encourage not only moving more, but also moving harder when possible.