As we age, our muscle strength and mobility naturally decrease. Research shows that muscle function drops by up to 49% between the ages of 25 and 75. A recent study suggests that belly fat—specifically waist and hip measurements—could help predict future mobility and strength.

Bigger Waistlines Lead to Weaker Mobility

A new study in Aging reveals that people with larger waist-to-hip and waist-to-height ratios tend to perform worse physically. The study tested over 10,000 people and found that waist measurements directly affect physical performance.

By measuring waist-to-hip ratio (WHR) and waist-to-height ratio (WHtR), healthcare providers can identify those at higher risk for mobility issues and offer guidance to improve long-term health.

What Are Waist-to-Hip and Waist-to-Height Ratios?

To calculate WHR, divide waist circumference by hip circumference. A higher WHR indicates higher risks for heart disease, diabetes, and metabolic issues. For men, a normal WHR is under 0.90, and for women, it’s below 0.85.

WHtR is calculated by dividing waist circumference by height. This ratio gives a clearer picture of abdominal fat and associated health risks. A WHtR under 0.5 is ideal for both men and women, indicating healthier fat distribution.

Abnormal Ratios and Poor Physical Performance

The study found worrying statistics about abnormal waist ratios:

• 61% of men had an abnormal WHR

• 39% of women had an abnormal WHR

• 71% of men had an abnormal WHtR

• 53% of women had an abnormal WHtR

People with abnormal ratios performed worse on physical tests. In a simple chair test, those with abnormal ratios took longer to stand up and sit down, showing a direct connection between waist size and physical performance.

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Visceral Fat and Declining Function

Excess belly fat, also known as visceral fat, can lead to lower muscle strength, flexibility, and mobility. It also affects cardiovascular and metabolic health, causing decreased endurance and aerobic performance.

The study shows that measuring waist-to-hip and waist-to-height ratios can give people a better understanding of their health risks. Small changes in lifestyle can help improve these numbers and boost overall health.

How to Improve Your Health

If you’re concerned about your waist size or physical performance, it’s a good idea to talk to your doctor. Working with a nutritionist and focusing on healthy eating and exercise can help reduce belly fat and improve your physical health.