Researchers at Rockefeller University found that short, intense sprints alter more blood proteins than 90 minutes of moderate exercise.
Key facts
- •Six 30-second sprints altered nearly 25% of measured blood proteins, compared to less than 0.25% for 90 minutes of cycling.
- •Sprint exercise triggered the release of over 200 metabolites and proteins related to tissue remodeling and hormonal signaling.
- •Researchers observed that the molecular response to sprinting persists after eight weeks of training.
- •Data from 53,000 UK Biobank participants linked 32 of 33 health-protective proteins to sprint exercise.
- •The study suggests that exerkines—proteins and metabolites released during exercise—are highly sensitive to intensity.
Researchers at Rockefeller University have identified that three minutes of all-out sprinting triggers a significant molecular response in the body. The study compared this high-intensity activity to 90 minutes of moderate cycling and treadmill running, finding that the sprint session altered a much larger percentage of proteins and metabolites in the bloodstream.
By the numbers
Molecular and Cellular Responses
The study found that six 30-second sprints changed nearly one-quarter of the proteins measured in the blood immediately after exercise, whereas 90 minutes of moderate cycling altered less than one-quarter of one percent. The sprint workout also increased levels of proteins involved in blood vessel growth, tissue remodeling, and hormonal signaling, partly through a process called ectodomain shedding where existing cell-surface proteins are cut and released into circulation. When researchers exposed human fat cells to blood collected after sprinting, they observed widespread changes in gene activity related to fuel processing and hormone reaction. In contrast, moderate exercise produced a less dramatic immediate reaction, with changes in fatty acids and liver-derived proteins not appearing until three hours after the workout.
Links to Long-Term Health
By comparing these findings with health data from more than 53,000 participants in the UK Biobank, researchers identified that many of the proteins affected by sprinting are associated with lower risks of cardiovascular and metabolic diseases, including obesity and type 2 diabetes. Of 33 proteins linked to lower disease risk, 32 were altered by sprinting, compared to only three affected by moderate exercise. Additionally, more than one-quarter of these proteins were linked to slower biological aging.
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This article was independently rewritten by ManyPress editorial AI from reporting originally published by ScienceDaily.
