A large review of 363 studies looked at how physical activity affects the body's metabolic signals. The researchers focused on how exercise changes certain proteins and hormones, such as adipokines, cytokines, and myokines, which play important roles in how the body handles energy and health.
Most of the studies included people who were overweight or had obesity. The findings show that while many studies confirm that exercise changes these markers, much of the research is focused on a few specific types. For example, the review found a lot of data on adiponectin and leptin, but very little information on the specific pathways or how these changes actually cause improvements.
Most of the research looked at long-term training and aerobic exercise. Because this was a scoping review of existing reports, it shows what is currently known in the scientific community rather than testing a new treatment. It highlights that while exercise is linked to many positive changes, more research is needed to understand the exact biological pathways involved.
