Journal of Applied Physiology · 8 authors, 8 centres
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This study investigated how acute aerobic exercise at different intensities affects the inflammatory receptor RAGE in skeletal muscle and its soluble decoy form (sRAGE) in lean and obese young adults. The central result was that obesity increased skeletal muscle RAGE expression, but acute exercise did not significantly alter RAGE levels or sRAGE isoforms in either group.
The study compared skeletal muscle RAGE expression and circulating sRAGE isoforms between lean and obese young adults (N=24) and examined the effect of acute aerobic exercise at different intensities. However, acute exercise did not significantly change muscle RAGE expression or circulating sRAGE isoforms (esRAGE or cRAGE) in either group. The authors suggest the small sample size, particularly the obese subgroup (n=7), and the mild obesity classification of participants may limit the detection of expected relationships between obesity and sRAGE. Limitations include the truncated methods/results and the inability to confirm exercise-induced changes in sRAGE due to potentially optimal baseline levels. The findings indicate that RAGE upregulation in skeletal muscle may be a maladaptive feature of obesity, but acute exercise alone may not be sufficient to modulate this pathway in this population.
