Home›Pulmonology & Critical Care› Exercise reduces inflammatory markers in 45.6% of meta-analytic associations, but evidence quality is low
Exercise reduces inflammatory markers in 45.6% of meta-analytic associations, but evidence quality is lowExercise Shows Link to Lower Inflammation in Chronic Diseases
Frontiers in MedicinePublished August 26, 2026Study authors: Wei Zhang, Minghui Du, Zhiyuan Zhang, Yixing Zhan, Longwei Chen, Jie DongDOI ↗Editorial oversight: Dr. Amelia Tan, PhD · Internal Medicine & Chronic Disease
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Key Takeaway
Consider exercise as a potential anti-inflammatory intervention in chronic diseases, but interpret with caution due to low evidence quality.
This umbrella review synthesizes evidence from 61 meta-analyses, encompassing 318 meta-analytic associations, to evaluate the effects of exercise interventions on circulating inflammatory biomarkers across diverse populations, including those with chronic diseases and healthy individuals. The review covers conditions such as cardiovascular diseases, metabolic disorders, cancers, chronic obstructive pulmonary disease, and fibromyalgia.
Overall, 145 (45.6%) of the 318 associations showed statistically significant effects on inflammatory markers. In chronic disease populations, a distinct anti-inflammatory trend was observed for CRP, IL-6, and TNF-α, suggesting that exercise may reduce systemic inflammation in these groups. However, in conditions like COPD and fibromyalgia, exercise may transiently elevate certain inflammatory markers, indicating a nuanced response.
The certainty of evidence was generally low: only 3.1% of associations were rated high quality, 28.0% moderate, and 68.9% low or very low quality using the GRADE framework. Significant heterogeneity in inflammation-modulating effects across populations was noted, and indirect comparisons for specific exercise modalities limit conclusions about which types of exercise are most effective.
Additional limitations include a potential small-study effect that may inflate effect sizes, and the fact that circulating biomarkers cannot distinguish modality-specific neuromuscular adaptations. The authors caution against interpreting acute post-exercise changes in healthy individuals as evidence of reduced systemic inflammatory burden, and against claiming superiority of specific exercise modalities based on indirect comparisons.
These findings are hypothesis-generating rather than definitive and are not intended to serve as practice guidelines. Clinicians should interpret the association between exercise and inflammatory biomarker changes with caution, given the low evidence quality.
How this fits prior evidence
This umbrella review extends prior coverage by synthesizing a broad body of evidence on exercise and inflammation across multiple chronic conditions. It confirms the anti-inflammatory potential of exercise in chronic diseases, aligning with prior findings that high-intensity exercise training improves dyspnoea in chronic respiratory conditions. It also addresses a gap by highlighting that in COPD, exercise may transiently elevate inflammatory markers, contrasting with the benefits seen for lung function and quality of life from yoga and Tai Chi. The low certainty of evidence tempers conclusions, similar to the caution noted for resveratrol's animal-model benefits.
Researchers looked at a large collection of data to see how different types of exercise affect inflammatory markers in the blood. These markers, such as CRP and IL-6, are often linked to various health issues including heart disease, cancer, and lung conditions.
The review found that for many people with chronic diseases, exercise showed a trend toward reducing these inflammation levels. However, the study noted that some people with certain conditions, like fibromyalgia or COPD, might see a temporary increase in some markers immediately after exercising.
It is important to know that much of the evidence used in this review was of low quality and varied greatly between different groups. Because the data is not definitive, these findings are meant to help scientists form new ideas rather than serve as a specific medical guide. You should talk with your doctor about how exercise can best fit into your personal health plan.
What this means for you:
Exercise shows a link to lower inflammation in many chronic diseases, though evidence quality remains low.
Common questions
Does exercise help with inflammation from chronic diseases?
The review found a distinct anti-inflammatory trend in people with various chronic diseases. Specifically, it looked at markers like CRP, IL-6, and TNF-alpha. While the results are promising for those with heart disease or metabolic disorders, the evidence is currently considered to be of low quality.
Can exercise cause a temporary spike in inflammation?
In some cases, such as with Fibromyalgia or Chronic Obstructive Pulmonary Disease, exercise may cause a transient increase in certain inflammatory markers. This means levels might go up briefly during or after activity. You should consult your doctor to understand how this applies to your specific condition.
How reliable is the evidence regarding exercise and inflammation?
The researchers noted that 68.9% of the data reviewed was of low or very low quality. Because of these limitations and the differences between various types of exercise, the findings are currently used to generate new ideas rather than as a set of firm medical guidelines.
Chronic low-grade inflammation is a pathophysiological hallmark of various chronic diseases, including cardiovascular diseases, metabolic disorders, and cancers. Regular physical exercise is recognized as an effective strategy to mitigate systemic inflammation; However, existing evidence is primarily derived from systematic reviews focused on specific populations or single biomarkers, resulting in a fragmented evidence base with inconsistent methodological quality. A comprehensive evaluation of the overall quality and certainty of the evidence remains lacking.
This umbrella review was conducted in accordance with standard guidelines. A systematic literature search was performed in PubMed, Embase, Web of Science, and the Cochrane Library up to January 2026 to identify meta-analyses examining the effects of exercise interventions on inflammatory biomarkers. Two independent reviewers performed literature screening and data extraction. Methodological quality was assessed using the AMSTAR 2 tool, and the certainty of evidence was graded according to the GRADE framework. The review focused on populations with diverse health statuses, providing a comprehensive evaluation of the impact of exercise on multiple inflammatory biomarkers.
A total of 61 meta-analyses were included, encompassing 318 meta-analytic associations (unique exercise-biomarker-population combinations). Of these, 145 (45.6%) showed statistically significant effects of exercise on inflammatory markers. The overall certainty of evidence was generally low: only 10 (3.1%) were rated high quality, 89 (28.0%) moderate quality, and the remaining 219 (68.9%) low or very low quality. Significant heterogeneity was observed in the inflammation-modulating effects of exercise across populations with different health statuses. In most chronic diseases, exercise demonstrated a distinct anti-inflammatory trend. However, in patients with chronic obstructive pulmonary disease and fibromyalgia, exercise may transiently elevate certain inflammatory markers.
This umbrella review suggests that exercise is associated with changes in circulating inflammatory biomarkers across diverse populations, though the certainty of the evidence is generally low to very low. In chronic disease populations, reductions in CRP, IL-6, and TNF-α are generally interpreted as reflecting an attenuation of systemic inflammatory burden, though this interpretation should not be automatically extended to acute post-exercise changes in healthy individuals. Certain exercise modalities showed larger effect sizes in specific populations, but these associations should not be interpreted as evidence of superiority, as the comparisons were indirect, effect sizes may be inflated by the small-study effect, and circulating biomarkers cannot distinguish modality-specific neuromuscular adaptations. Caution is warranted for COPD and fibromyalgia, where exercise may paradoxically trigger acute inflammatory responses. Given the low certainty of evidence and heterogeneity in exercise protocols, the findings should be interpreted as hypothesis-generating rather than definitive, and are intended to inform future research rather than to serve as practice guidelines.
https://www.crd.york.ac.uk/PROSPERO/, identifier, CRD420251236842.
