When it comes to fitness, the most helpful advice might just be to focus on working harder rather than longer. Recent research has shed light on the unique advantages of intense workouts.
Researchers examined the long-term health of individuals in the UK. They discovered that those engaging in more vigorous physical activities each week had a significantly lower risk of developing eight chronic diseases and premature death, even after considering overall activity levels. They suggest that even brief bursts of high-intensity exercises, like dashing for a bus, could greatly influence longevity.
“These results support, whenever feasible, the emphasis on higher-intensity activities in clinical and public health programs aimed at preventing non-communicable diseases,” the researchers stated in their publication, which appeared on Sunday in the European Heart Journal.
Understanding the Importance of Exercise Type
It’s already known that vigorous exercise, which generally refers to activities that leave you breathless, tends to offer more health advantages per minute compared to lighter exercises. However, the researchers note some uncertainty still exists regarding how these benefits compare across various health issues, particularly concerning the balance between intensity and duration of exercise.
To clarify this, the team analyzed data from the UK Biobank, a longstanding study tracking the health of middle-aged citizens. Some participants wore accelerometers for a week to provide objective measurements of their physical activity. In total, over 300,000 individuals who self-reported their weekly activity were included, along with around 100,000 who had their activity recorded externally.
Those who reported engaging in vigorous activity for at least 4% of their weekly time showed a lower likelihood of developing various health conditions over a seven-year follow-up. These conditions included major cardiovascular diseases, liver and chronic kidney diseases, chronic respiratory issues, immune-related inflammatory diseases, irregular heartbeats, type 2 diabetes, and dementia.
The most significant reductions were noted for dementia (63% lower) and diabetes (60% lower), while those who exercised vigorously were 46% less likely to die during the study. It appeared that exercise intensity was more closely linked to reduced risks of inflammatory diseases, major cardiovascular issues, irregular heartbeats, and dementia. This suggests that engaging in vigorous activity could be especially beneficial in reducing harmful inflammation associated with these health concerns.
Notably, these trends were consistent even for those performing similar total weekly activity but at different intensities, and this held true even for those only doing minimal vigorous exercise.
“Intensity consistently displayed a greater preventive potential than the total [physical activity] volume,” the researchers concluded.
Implications for Your Daily Exercise Routine
The researchers acknowledge that some individuals may not be able to increase their physical activity levels due to various factors, such as age or pre-existing health conditions. Ultimately, any level of regular exercise is still an improvement over none.
For those who can and want to make the most out of their day, focusing on intensity might be the key. Interestingly, it doesn’t necessarily require a lot of time, according to the researchers.
“You don’t need to hit the gym. Incorporating brief moments of activity that make you breathe harder into your daily routine—like taking the stairs quickly, walking briskly between tasks, or engaging playfully with children—can significantly enhance your health,” stated Minxue Shen, a public health professor at Central South University in Hunan, China, in a statement released by the European Society of Cardiology, the study’s publisher. “Even dedicating just 15 to 20 minutes a week to this sort of effort—just a few minutes each day—was associated with substantial health benefits.”
Personally, this research might just encourage me to push myself a little harder during my runs, at least some of the time.
