Effects of exercise on adiponectin: a systematic review

Area of Science:

• Exercise physiology
• Metabolic disease research
• Adiponectin and inflammation

Background:

• Adiponectin, secreted by white adipose tissue, is a key metabolic hormone.
• Reduced adiponectin levels are linked to obesity, type 2 diabetes, and cardiovascular disease.

Purpose of the Study:

• To systematically review and critically assess the evidence on exercise's effects on adiponectin levels.
• To evaluate the impact of different exercise modalities and intensities on adiponectin.

Main Methods:

• Comprehensive literature search of major databases (Medline, CINAHL, EMBASE, etc.) from 1966 to September 2006.
• Inclusion of 33 trials encompassing cross-sectional, acute exercise, uncontrolled, non-randomized, and randomized controlled trials (RCTs).
• Analysis of study designs and reported effects of exercise on serum adiponectin concentrations.

Main Results:

• Thirty-eight percent of RCTs showed exercise increased serum adiponectin, with small-to-moderate effect sizes.
• One study indicated a dose-response relationship between resistance training intensity and adiponectin augmentation.
• Inconsistent findings were observed regarding short-term, moderate-to-high intensity aerobic or resistance training.

Conclusions:

• Exercise demonstrates a potential to increase adiponectin levels, though evidence is not uniformly consistent.
• Augmenting adiponectin may be crucial for managing metabolic and cardiovascular diseases, especially in high-risk populations.
• Further research is needed to clarify optimal exercise prescriptions for adiponectin elevation.