Rockefeller University study finds sprinting impacts blood proteins more than moderate exercise

Researchers at Rockefeller University have discovered that short bursts of high-intensity sprinting can trigger more significant molecular changes in the bloodstream than prolonged moderate exercise. In a study published in Cell Reports Medicine, scientists found that six sets of 30-second all-out sprints altered nearly 25% of measured proteins immediately following the activity.

In contrast, 90 minutes of continuous moderate cycling altered less than 0.25% of proteins. While moderate treadmill running showed more protein changes than cycling, it still fell far short of the impact seen with sprinting. The intense exercise also triggered changes in over 200 metabolites and caused a surge in proteins linked to hormonal signaling, tissue remodeling, and blood-vessel growth.

These changes may occur through a process called ectodomain shedding, where portions of existing cell-surface proteins are rapidly released into circulation. Furthermore, human fat cells exposed to blood collected after sprinting showed extensive changes in gene activity related to fuel processing and nutrient sensing. When researchers cross-referenced these exercise-responsive proteins with health data from over 53,000 individuals in the UK Biobank, they identified associations between these proteins and a reduced risk of metabolic and cardiovascular diseases, including obesity and type 2 diabetes.