Researchers found tart cherry supplementation altered proteins tied to muscle structure, repair and immune activity in young men after a muscle-damaging workout.
By yourNEWS Media Newsroom
Tart cherry supplementation may affect how skeletal muscle responds to exercise-related damage, according to new research published in Frontiers in Nutrition.
The study examined 34 healthy, recreationally active young men and found that tart cherry supplementation changed the protein profile of skeletal muscle after exercise-induced muscle damage. Rather than focusing only on soreness, strength or performance, researchers analyzed cellular-level changes inside muscle tissue.
Tart cherries, particularly Montmorency tart cherries, have become popular as a nutraceutical because they contain polyphenols and antioxidant compounds. Previous research has linked tart cherries to recovery support, reduced inflammation markers and improved responses to exercise-related muscle stress.
The new study adds proteomic evidence to that research by examining how tart cherry compounds may influence muscle tissue directly after damaging exercise.
Researchers assigned participants to receive either a placebo, a low-dose tart cherry concentrate or a high-dose tart cherry supplement. The men consumed their assigned supplement for seven days before completing a muscle-damaging workout, then continued supplementation for three days afterward. The full intervention lasted 10 days.
To evaluate the effects, researchers measured muscle function, collected blood samples and performed muscle biopsies. That design allowed the team to examine changes in proteins and cellular pathways inside muscle tissue, rather than relying only on indirect recovery markers.
The study found that tart cherry supplementation significantly altered the muscle protein profile after exercise-induced damage. Changes were observed in proteins involved in muscle structure, contraction, cellular repair and immune-cell activity within muscle tissue.
Those findings suggest tart cherry polyphenols may influence how muscles respond to exercise stress and begin the repair process afterward.
Researchers also reported evidence of altered macrophage activity. Macrophages are immune cells that help clear damaged tissue and support repair after exercise. Changes in macrophage-related activity suggest tart cherry supplementation may affect broader muscle remodeling and adaptation, processes that help the body recover and become stronger after training.
The study also pointed to a possible role for the gut microbiome.
Researchers found significant increases in hippuric acid, a compound produced when gut microbes break down polyphenols from tart cherries and other plant foods. Participants with higher hippuric acid levels tended to maintain better muscle function after exercise-induced damage, though researchers cautioned that the study was not designed to prove hippuric acid directly caused the effect.
The finding suggests that some benefits of tart cherries may depend on how a person’s gut microbiome metabolizes plant polyphenols. That connection between gut health, plant compounds and muscle recovery is an emerging area of research.
The study adds to evidence that tart cherry supplementation may support muscle health at the cellular level. However, researchers noted important limitations. The intervention lasted only 10 days, and the study did not examine long-term training adaptations or broader athletic performance outcomes over time.
More research is needed to determine whether tart cherry supplementation can consistently improve recovery, preserve function or enhance adaptation after repeated training.
Researchers also said further studies are needed to confirm whether hippuric acid directly contributes to the observed muscle effects or simply reflects polyphenol metabolism.
The findings support the idea that natural compounds in tart cherries may influence recovery-related processes, but they do not suggest supplements should replace sound training, rest, hydration or whole-food nutrition.
Tart cherry products may be useful as part of a broader recovery strategy, particularly for people seeking plant-based support after strenuous exercise. But researchers emphasized that longer and larger studies are needed before firm conclusions can be made about long-term benefits.
The study highlights a growing interest in how functional foods affect recovery not only at the level of soreness or fatigue, but inside the muscle itself.
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