February 17, 2026, 9:21 am | Read time: 3 minutes
As we age, low-grade inflammation can occur in the body. Metabolism also changes. But how does exercise influence these processes? A comprehensive analysis examines the connection between physical activity and age-related physiological changes.
What Was Examined in the Study?
A large review published in the journal “Ageing Research Reviews” investigated how regular exercise affects inflammation processes and metabolism in people over 50.1 Researchers evaluated 146 controlled training studies. They analyzed endurance training, strength training, and a combination of both. Data collected included body weight, fat and muscle mass, blood sugar, blood lipids, endurance performance, and various blood inflammation markers.
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The Results
A clear overall picture emerges:
- Regular exercise is associated with improvements in most of the health metrics studied. These include body composition, sugar and fat metabolism, and several important blood inflammation markers.
- Several relevant inflammatory substances decreased significantly. Markers particularly affected were those often elevated in people with chronic diseases and associated with cardiovascular diseases, diabetes, and age-related illnesses. These include C-reactive protein (CRP), interleukin-6 (IL-6), tumor necrosis factor alpha (TNF-α), and the adipose tissue hormone leptin.
- Not all inflammation markers responded equally. One less central marker showed no clear change overall, without diminishing the positive overall results.
- Endurance training achieved the strongest effects overall. It significantly improved endurance performance, blood sugar and fat metabolism, and several inflammation values.
- Strength training also showed positive effects, but with different focuses. It built muscle mass and improved several metabolic values, but had little overall effect on body weight and did not significantly reduce certain inflammation markers like IL-6.
- The frequency of training played a crucial role. The most significant and reliable improvements in body weight, insulin action, blood lipids, and inflammation values were seen with three training sessions per week, or with longer programs, even at a lower frequency.
- Not everyone benefited equally. Women, as well as overweight and chronically ill individuals, achieved greater improvements than healthy individuals of normal weight. Those who were already very healthy and fit could often only slightly improve their values.
What Does the Study Mean?
Regular exercise acts as a natural protective factor against chronic inflammation and metabolic disorders in older age. Endurance training is particularly effective, complemented by strength training. The key is not the specific type of exercise but the regularity. Frequent physical activity simultaneously improves inflammation status, sugar and fat metabolism, and physical performance. This analysis provides a solid scientific basis for simple and realistic exercise recommendations for older adults.
Despite the clear results, there are limitations. Many of the studies evaluated had relatively small participant numbers or limited significance. Additionally, training forms, duration, and intensity varied greatly between studies. The greatest health benefits were seen in people with overweight or pre-existing conditions, while very healthy and fit individuals benefited less.
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